{"title":"Cylinder Heads","description":"","products":[{"product_id":"tsp-brawler-ls3-style-cnc-ported-cylinder-heads-pair-assembled","title":"TSP Brawler LS3 Style CNC Ported Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTexas Speed \u0026amp; Performance Brawler LS3 Style CNC Ported Cylinder Heads PAIR - w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIntroducing TSP's Brawler Series CNC LS3 Heads! The goal with the Brawler series cylinder heads is to provide a standardized on the shelf, in-stock cylinder head that can ship out very quickly and to provide customers with an incredible bargain!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIf you are looking for a great replacement\/upgraded LS3-style cylinder head, look no further than these fully CNC ported Brawler cylinder heads!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThese are i\u003c\/span\u003e\u003cspan\u003enspired from a factory GM LS3 cylinder head casting but with TSP's tried and true CNC porting program. Equipped with their Stainless Steel valves and TSP\/PAC Dual .660 Spring kit with Titanium Retainers, this new cylinder head option provides maximum value for customers wanting to upgrade from stock cylinder heads on a budget. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSame CNC Porting As GM PRC Ported LS3 Heads (257cc Intake port)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCNC 5-Angle Valve Job\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApprox. 71cc Combustion Chamber\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTSP\/PAC .660 Spring Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTSP Titanium Retainers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTSP Stainless Steel Valves 2.165\" Hollow Stem intake, 1.60\" stainless exhaust\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFully Assembled and Tested\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDyno Tested 25+HP Gains Over Stock 6.2L Cylinder Heads!\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003e \u003cspan\u003eBrawler LS3 \u003c\/span\u003eFlow Data\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e154 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e115 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e223 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e170 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e282 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e198 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e324 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e211 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e351 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e228 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e358 cfm\u003c\/td\u003e\n\u003ctd\u003e232 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45629812834502,"sku":"PRC-BrawlerLS3","price":2099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-brawler-ls3-style-cnc-ported-cylinder-heads-pair-assembled-1227470167.webp?v=1773728048"},{"product_id":"tsp-brawler-ls6-style-cnc-ported-cathedral-cylinder-heads-pair-assembled","title":"TSP Brawler LS6 Style CNC Ported Cathedral Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP Brawler LS6 Style CNC Ported Cathedral Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIntroducing TSP's Brawler Series CNC LS6 Heads! The goal with the Brawler series cylinder heads is to provide a standardized on the shelf, in-stock cylinder head that can ship out very quickly and to provide customers with an incredible bargain!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIf you are looking for a great replacement\/upgraded LS1\/LS6-style Cathedral Port cylinder  head, look no further than these fully CNC ported Brawler cylinder heads!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThese are i\u003c\/span\u003e\u003cspan\u003enspired from a factory GM LS6 cylinder head casting but with TSP's tried and true CNC porting program. Equipped with their Stainless Steel valves and TSP\/PAC Dual .660 Spring kit with Titanium Retainers, this new cylinder head option provides maximum value for customers wanting to upgrade from stock cylinder heads on a budget. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSame CNC Porting As GM PRC Ported LS6 Heads \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCNC 5-Angle Valve Job\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e64cc Combustion Chamber\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTSP\/PAC .660 Spring Kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTSP Titanium Retainers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTSP Stainless Steel Valves 2.02\"\u003c\/span\u003e\u003cspan\u003e stainless intake, 1.57\" stainless exhaust\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCHE Bronze Guides\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eFully Assembled and Tested\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e \u003cstrong\u003e\u003cspan\u003eBrawler LS6 Flow Chart\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e147 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e114  cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e207 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e152 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e255 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e191 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e 292 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e207 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e 316 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e226 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45629815783622,"sku":"PRC-BrawlerLS6","price":2099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-brawler-ls6-style-cnc-ported-cathedral-cylinder-heads-pair-assembled-1227470166.webp?v=1773727807"},{"product_id":"tsp-prc-as-cast-225cc-ls1-ls2-cathedral-port-cylinder-heads-pair-assembled","title":"TSP PRC As-Cast 225cc LS1\/LS2 Cathedral Port Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC As-Cast 225cc LS1\/LS2 Style Cathedral Port Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\u003cspan\u003ePrecision Race Components (PRC) all new as-cast cylinder heads completed with CNC machined chambers \u0026amp; valve guides. For  LS1\/LS2 applications requiring a high flow aftermarket cylinder head at a unbelievable price!\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eThe all new PRC 225cc As-Cast cylinder heads are finally available for customers looking for the ultimate as-cast cathedral LS heads available.  The new PRC as-cast intake port has been flow bench tested to flow over 320cfm \u0026amp; can support everything from smaller camshaft street engines all the way to all out race engines. This cylinder head is a combination of a max-effort, high-flowing port combined with a smaller chamber designed for max power in stock cube applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAs-Cast 225cc Intake Runners With CNC Machined Chambers \u0026amp; Valve Guides For Unmatched Flow!\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eSmall Bore Configurations for extra compression applications while keeping good piston to valve clearance\u003c\/li\u003e\n\u003cli\u003e62cc CNC Machined Chambers\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003c\/li\u003e\n\u003cli\u003e2.065\" Hollow Stem Intake Valves \/ 1.600\" Stainless Exhaust Valves\u003c\/li\u003e\n\u003cli\u003eUtilizes Factory LS1 Rocker Arms\u003c\/li\u003e\n\u003cli\u003eTSP .660 Dual Spring Kit w\/ PAC Valve Springs and Titanium Retainers!\u003c\/li\u003e\n\u003cli\u003eMinimum Bore Dia 3.820\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003e As-Cast 225cc Flow Data (4.00\" Flow Plate - No Exhaust Pipe):\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.100\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e68 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e56 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e145 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e113 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e210 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e164 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e257 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e200 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e300 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e214 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e318 cfm\u003c\/td\u003e\n\u003ctd\u003e229 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e321 cfm\u003c\/td\u003e\n\u003ctd\u003e230 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631168807110,"sku":"PRC-SSAsCast225","price":2499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-as-cast-225cc-ls1-ls2-cathedral-heads-pair-assembled-1227546341.png?v=1773778147"},{"product_id":"tsp-prc-260cc-ls3-style-6-bolt-heads-pair-assembled","title":"TSP PRC 260cc CNC Ported LS3 Style 6-Bolt Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC 260cc CNC Ported LS3\/LS2\/L99 Style 6-Bolt Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eAll Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePRC cylinder heads are extensively researched and tested. These aftermarket LS3 castings flow significantly more than a GM ported casting while keeping port sizes smaller for improved port velocity. The result is smaller-than-stock LS3 ports that move more air than any other LS3 cylinder heads.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe 13-degree valve angle allows higher compression and larger camshafts thanks to additional piston-to-valve clearance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eNEW PRC 13-Degree Valve Angle LS3 Castings\u003c\/li\u003e\n\u003cli\u003eImproved piston-to-valve clearance for extra compression \u0026amp; larger camshafts\u003c\/li\u003e\n\u003cli\u003eSmaller than stock intake port volume for improved port velocity\u003c\/li\u003e\n\u003cli\u003eFully CNC'd Intake, Exhaust and Chamber\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eStainless steel hollow stem 2.185\" intake valves \u0026amp; stainless steel 1.60\" exhaust valves\u003c\/li\u003e\n\u003cli\u003eIntegrated rocker pedestals\u003c\/li\u003e\n\u003cli\u003eTSP .660\" Spring Kit with PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003eCompletely assembled in the USA\u003c\/li\u003e\n\u003cli\u003e68cc combustion chambers\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMinimum Bore Dia 4.000\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003e 260cc 6-Bolt LS3 Flow Data\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e157 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e117 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e224 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e170 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e279 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e205 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e329 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e225 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e360 cfm\u003c\/td\u003e\n\u003ctd\u003e235 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e372 cfm\u003c\/td\u003e\n\u003ctd\u003e240 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.700\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e380 cfm\u003c\/td\u003e\n\u003ctd\u003e243 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631190270150,"sku":"PRC-SS260LS3","price":3099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-260cc-ls3-style-6-bolt-heads-pair-assembled-1227546340.png?v=1773778088"},{"product_id":"tsp-prc-237cc-cnc-ported-cathedral-port-cylinder-heads-pair-assembled","title":"TSP PRC 237cc CNC Ported Cathedral Port Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC 237cc CNC Ported Cathedral Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003ePrecision Race Components all new cylinder head castings completed with 237cc runners. For 370 cubic inch and larger applications with 4.00\"+ bore sizing.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eThe all new 237cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance. The new 237cc port has been flow bench tested to flow over 330cfm \u0026amp; can support everything from smaller camshaft street engines all the way to all our race engines. This cylinder head is a combination of a max effort high flowing port combined. \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e237cc Fully CNC Ported Intake Runners\u003c\/li\u003e\n\u003cli\u003e84cc Fully CNC Ported Exhaust Runners\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003c\/li\u003e\n\u003cli\u003eTSP .660 Spring Kit w\/ PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/li\u003e\n\u003cli\u003e68cc CNC Machined Chambers\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003e2.100\" Hollow Stem Intake Valve \/ 1.600\" Stainless Exhaust Valves  \u003c\/li\u003e\n\u003cli\u003eFactory Rocker Friendly!!\u003c\/li\u003e\n\u003cli\u003eMinimum Bore Dia: 4.000\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003e 237cc CNC Ported Flow Data (4.030\" Flow Plate - No Exhaust Pipe):\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.100\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e66 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e57 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e147 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e117 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e225 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e170 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e284 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e206 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e325 cfm\u003c\/td\u003e\n\u003ctd\u003e227 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e334 cfm\u003c\/td\u003e\n\u003ctd\u003e235 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e339 cfm\u003c\/td\u003e\n\u003ctd\u003e241 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631221399750,"sku":"PRC-SS237SC","price":3099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-237cc-cnc-ported-cathedral-style-heads-pair-assembled-1227556665.png?v=1773785528"},{"product_id":"tsp-prc-312cc-cnc-ported-lt1-style-6-bolt-cylinder-heads-pair-assembled","title":"TSP PRC 312cc CNC Ported LT1 Style 6-Bolt Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC 312cc CNC Ported LT1 Style 6-Bolt Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003ePrecision Race Components (PRC) LT1 CNC 312cc ported cylinder heads.  All new 6-bolt Precision Race Components LT cylinder heads!\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExtensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e2.165\" Stainless Hollow stem Intake Valve \/ 1.600\" Stainless Exhaust Valve\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003c\/li\u003e\n\u003cli\u003eTSP .660 Spring Kit w\/ PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/li\u003e\n\u003cli\u003e6-Bolt Cylinder Heads with Thicker Deck Surface\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003eWill Work on Both Standard GM 4-Bolt \u0026amp;  Aftermarket LT 6-Bolt Style Engine Blocks\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled in the USA\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCylinder Head Specs:\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eIntake CC:    312cc\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIntake Valve: 2.165\"\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eExhaust Valve:1.600\"\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eChamber Size: 58cc \u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003e 312cc CNC Ported LT1 Heads Flow Data\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e151 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e117 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e223 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e154 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e265 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e200 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e310 cfm\u003c\/td\u003e\n\u003ctd\u003e216 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e349 cfm\u003c\/td\u003e\n\u003ctd\u003e229 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e365 cfm\u003c\/td\u003e\n\u003ctd\u003e232 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.750\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e370 cfm\u003c\/td\u003e\n\u003ctd\u003e235 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631278350534,"sku":"PRC-SSLT1","price":3199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-312cc-cnc-ported-lt1-style-6-bolt-heads-pair-assembled-1227556664.png?v=1773785467"},{"product_id":"tsp-prc-247cc-cnc-ported-cathedral-port-cylinder-heads-pair-assembled","title":"TSP PRC 247cc CNC Ported Cathedral Port Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC 247cc CNC Ported Cathedral Port Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003ePrecision Race Components (PRC) all new cylinder head castings completed with 247cc runners. For 408 cubic inch and larger applications with 4.030\"+ bore sizing.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe all new 247cc cylinder head is finally available for customers looking for the pinnacle of LS cathedral port performance. The new 247cc port has been flow bench tested to flow over 360cfm. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e247cc Fully CNC Ported Intake Runners\u003c\/li\u003e\n\u003cli\u003e84cc Fully CNC Ported Exhaust Runners\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003c\/li\u003e\n\u003cli\u003eTSP .660 Spring Kit w\/ PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/li\u003e\n\u003cli\u003e68cc CNC Machined Chambers\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003e2.120\" Hollow Stem Intake Valves\/ 1.600\" Stainless Exhaust Valves\u003c\/li\u003e\n\u003cli\u003eFactory Rocker Friendly!!\u003c\/li\u003e\n\u003cli\u003eMinimum Bore Dia: 4.030\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003e 247cc CNC Ported Flow Data (No Exhaust Pipe):\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.100\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e66 cfm\u003c\/td\u003e\n\u003ctd\u003e57 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e147 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e117 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e228 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e170 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e282 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e206 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e321 cfm\u003c\/td\u003e\n\u003ctd\u003e227 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e343 cfm\u003c\/td\u003e\n\u003ctd\u003e235 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e355 cfm\u003c\/td\u003e\n\u003ctd\u003e241 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.700\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e360 cfm\u003c\/td\u003e\n\u003ctd\u003e245 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631420858566,"sku":"PRC-SS247CNC","price":3099.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-247cc-cnc-ported-408-ci-style-cathedral-port-heads-pair-assembled-1227556663.png?v=1773785408"},{"product_id":"tsp-prc-as-cast-cnc-ported-ls3-style-6-boltheads-pair-assembled","title":"TSP PRC As-Cast 257cc CNC Ported LS3 Style 6-Bolt Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC As-Cast 257cc CNC Ported LS3 Style 6-Bolt Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003ePrecision Race Components (PRC) all new LS3 as-cast cylinder heads completed with CNC machined chambers \u0026amp; valve guides. For LS3\/L99\/L92\/LSA\/LS9 applications requiring a high flow aftermarket cylinder head at a competitive price!\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe all new PRC LS3 As-Cast cylinder heads are now available for customers looking for the ultimate as-cast LS3 cylinder heads available.  The new PRC as-cast intake port has been flow bench tested to flow 369 CFM \u0026amp; can support everything from smaller camshaft street engines all the way to all out race engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eAs-Cast 257cc Intake Runners With CNC Machined Chambers \u0026amp; Valve Guides For Unmatched Flow!\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e68cc CNC Machined Chambers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThicker Deck Surface Makes Them Ideal For Power-Adder Applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRelocated valves with 13° Valve Angles\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2.170\" Hollow Stem Stainless Intake\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eValves \u003c\/span\u003e\/ 1.600\" Stainless Exhaust Valves\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUtilizes Factory Rocker Arms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTSP .660 Spring Kit w\/ PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMinimum Bore Dia: 4.000\"\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003e As-Cast 257cc CNC Ported LS3 Flow Data \u003cspan\u003e(\u003c\/span\u003e\u003cspan\u003e4.00\" Flow Plate - No Exhaust Pipe):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e153 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e114 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e233 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e163 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e287 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e191 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e329 cfm\u003c\/td\u003e\n\u003ctd\u003e214 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e357 cfm\u003c\/td\u003e\n\u003ctd\u003e228 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e369 cfm\u003c\/td\u003e\n\u003ctd\u003e233 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631434096838,"sku":"PRC-SSLs3AC","price":2499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-as-cast-cnc-ported-ls3-style-6-boltheads-pair-assembled-1227556662.png?v=1773785348"},{"product_id":"tsp-prc-15-degree-220cc-as-cast-ls1-ls6-style-cathedral-port-heads-pair-assembled","title":"TSP PRC 15-Degree 220cc As-Cast LS1\/LS2 Cathedral Port Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC 15-Degree 220cc As-Cast LS1\/LS2 Style Cathedral Port Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eFor use on 3.820 or bigger bore.\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cspan\u003ePrecision Race Components (PRC) all new cylinder head castings completed with 220cc runners. For stock cubic inch 4.8\/5.3\/LS1\/LS2 applications requiring a stock valve angle LS cylinder head with extra thick decks comparable to stock piston to valve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe all new 220cc cylinder head is finally available for customers looking for a bolt on 15 degree LS cathedral cylinder head.  Think of this cylinder head as the ultimate 15 degree LS1\/LS2 cylinder heads for guys wanting a stronger replacement to the LS1\/LS6\/LS2 factory casting.  The perfect head for guys wanting a aftermarket casting  that will retain the use of all there existing components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e220cc Intake Runners\u003c\/li\u003e\n\u003cli\u003e84cc Exhaust Runners\u003c\/li\u003e\n\u003cli\u003eDesigned as a bolt on cylinder head with minimal change to pushrod length\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003c\/li\u003e\n\u003cli\u003eTSP .660 Spring Kit w\/ PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/li\u003e\n\u003cli\u003e64cc CNC Machined Chambers\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003e2.045\" Stainless Intake Valves\/ 1.600\" Stainless Exhaust Valves  \u003c\/li\u003e\n\u003cli\u003eFactory Rocker Friendly!!\u003c\/li\u003e\n\u003cli\u003eExtra Thick Deck Surfaces For Power Adders\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003e 15-Degree 220cc As-Cast LS1\/LS2 Flow Data \u003cspan\u003e(\u003c\/span\u003e\u003cspan\u003e4.00\" Flow Plate - No Exhaust Pipe):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.100\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e67 cfm\u003c\/td\u003e\n\u003ctd\u003e55 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e145 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e113 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e207 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e166 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e252 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e200 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e292 cfm\u003c\/td\u003e\n\u003ctd\u003e215 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e304 cfm\u003c\/td\u003e\n\u003ctd\u003e226 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e311 cfm\u003c\/td\u003e\n\u003ctd\u003e238 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631454347462,"sku":"PRC-SS220AC","price":2149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-15-degree-220cc-as-cast-ls1-ls6-style-cathedral-port-heads-pair-assembled-1227556661.png?v=1773785288"},{"product_id":"tsp-prc-big-chamber-225cc-as-cast-ls1-ls2-cathedral-port-cylinder-heads-pair-assembled","title":"TSP PRC Big Chamber 225cc As-Cast LS1\/LS2 Cathedral Port Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC Big Chamber 225cc As-Cast LS1\/LS2 Cathedral Port Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePrecision Race Components (PRC) all new as-cast cylinder heads completed with CNC machined chambers \u0026amp; valve guides. For  LS1\/LS2 applications requiring a high flow aftermarket cylinder head at a unbelievable price!\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe all new PRC 225cc As-Cast cylinder heads are finally available for customers looking for the ultimate as-cast cathedral LS heads available.  The new PRC as-cast intake port has been flow bench tested to flow over 320cfm \u0026amp; can support everything from smaller camshaft street engines all the way to all out race engines. This cylinder head is a combination of a max-effort, high-flowing port combined with a smaller chamber designed for max power in stock cube applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eAs-Cast 225cc Intake Runners With CNC Machined Chambers \u0026amp; Valve Guides For Unmatched Flow!\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLarge Bore Configurations for customers looking for bigger bores such as stroker or boost applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e68cc CNC Machined Chambers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2.065\" Hollow Stem Intake \/ 1.600\" Stainless Exhaust Valves\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUtilizes Factory LS1 Rocker Arms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTSP .660 Dual Spring Kit w\/ PAC Valve Springs and Titanium Retainers!\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003eBig Chamber 225cc As-Cast LS1\/LS2 Heads Flow Data \u003cspan\u003e(\u003c\/span\u003e\u003cspan\u003e4.00\" Flow Plate - No Exhaust Pipe):\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.100\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e68 cfm\u003c\/td\u003e\n\u003ctd\u003e56 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e145 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e113 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e210 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e164 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e257 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e200 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e300 cfm\u003c\/td\u003e\n\u003ctd\u003e214 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e318 cfm\u003c\/td\u003e\n\u003ctd\u003e229 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e321 cfm\u003c\/td\u003e\n\u003ctd\u003e230 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631469945030,"sku":"PRC-SSASCASTBC","price":2499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-big-chamber-225cc-as-cast-ls1-ls2-style-cathedral-port-heads-pair-assembled-1227682161.png?v=1773792608"},{"product_id":"tsp-prc-312cc-cnc-ported-lt4-style-6-bolt-heads-pair-assembled","title":"TSP PRC 312cc CNC Ported LT4 Style 6-Bolt Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC 312cc CNC Ported LT4 Style Cylinder 6-Bolt Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003ePrecision Race Components (PRC) LT4 CNC 312cc ported cylinder heads.  All new 6-bolt Precision Race Components LT cylinder heads!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eExtensive CNC and dyno testing has resulted in one of the most powerful LT-based cylinder heads available! \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e2.165\"\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"text-decoration: underline;\"\u003eTitanium\u003c\/span\u003e Intake Valves\/ \u003cspan\u003e1.600\" \u003c\/span\u003eStainless Steel Exhaust Valves\u003c\/li\u003e\n\u003cli\u003e3\/4\" Deck Thickness\u003c\/li\u003e\n\u003cli\u003eWill accept up to 1\/2\" Cylinder Head Hardware\u003c\/li\u003e\n\u003cli\u003eTSP .660 Spring Kit w\/ PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/li\u003e\n\u003cli\u003e6-Bolt Cylinder Heads with Thicker Deck Surface\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003eWill Work on Both Standard GM 4-Bolt \u0026amp;  Aftermarket LT 6-Bolt Style Engine Blocks\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled in the USA\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCylinder Head Specs:\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eIntake CC:    312cc\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIntake Valve: 2.165\"\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eExhaust Valve:1.600\"\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eChamber Size: 62.5cc\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003e 312cc CNC Ported LT4 Flow Data\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e151 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e117 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631483052230,"sku":"PRC-SSLT4","price":3799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-312cc-cnc-ported-lt4-style-6-bolt-heads-pair-assembled-1227682160.png?v=1773792549"},{"product_id":"tsp-prc-265cc-cnc-ported-ls7-style-6-bolt-heads-pair-assembled","title":"TSP PRC 265cc CNC Ported LS7 Style 6-Bolt Cylinder Heads PAIR - Assembled","description":"\u003cp\u003e\u003cstrong\u003eTSP PRC 265cc CNC Ported LS7 Style 6-Bolt Cylinder Heads PAIR w\/ TSP .660\" Spring Kit and Titanium Retainers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003ePrecision Race Components (PRC) LS7 CNC 265cc ported cylinder heads.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExtensive CNC and dyno testing has resulted in one of the most affordable and powerful LS7-based cylinder heads available! Flowing up to 35 CFM more than the stock GM LS7 head, the all-new PRC cylinder heads offer both unmatched power and airflow!   \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eMADE IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCAST IN THE USA!!\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMACHINED IN THE USA!!\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003ePRC 6-Bolt LS7 Cylinder Heads with Thicker Deck Surface\u003c\/li\u003e\n\u003cli\u003eWill Work on Both Standard GM 4-Bolt \u0026amp; Aftermarket LSx \/ RHS 6-Bolt Style Engine Blocks\u003c\/li\u003e\n\u003cli\u003e2.205\" \u003cspan style=\"text-decoration: underline;\"\u003eTitanium\u003c\/span\u003e Intake Valves\/1.610\" Stainless Exhaust Valves\u003c\/li\u003e\n\u003cli\u003eTSP .660 Spring Kit w\/ PAC Valve Springs \u0026amp; Titanium Retainers\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Guides\u003c\/li\u003e\n\u003cli\u003eCompletely Assembled in the USA\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\u003cstrong\u003e 265cc CNC Ported LS7 Flow Data (4.125\" Bore Plate  Superflow 600):\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e169 cfm\u003c\/td\u003e\n\u003ctd\u003e119 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e248 cfm\u003c\/td\u003e\n\u003ctd\u003e179 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e308 cfm\u003c\/td\u003e\n\u003ctd\u003e211 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e351 cfm\u003c\/td\u003e\n\u003ctd\u003e224 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e388 cfm\u003c\/td\u003e\n\u003ctd\u003e241 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.650\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e388 cfm\u003c\/td\u003e\n\u003ctd\u003e241 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.700\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e393 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e246 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Texas Speed \u0026 Performance","offers":[{"title":"Default Title","offer_id":45631488852166,"sku":"PRC-SSLS7265","price":3999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/texas-speed-performance-tsp-prc-265cc-cnc-ported-ls7-style-6-bolt-heads-pair-assembled-1227682159.png?v=1773792488"},{"product_id":"smeding-performance-275cc-11-cnc-ls3-cylinder-heads-pair","title":"Smeding Performance 275cc 11° CNC LS3 Cylinder Heads PAIR","description":"\u003cp\u003e\u003cstrong\u003eSmeding Performance 275cc 11° CNC LS3 Cylinder Heads PAIR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e100% Fully CNC Ported 275cc Intake, 100cc Exhaust \u0026amp; 69cc Chambers\u003c\/li\u003e\n\u003cli\u003eVirgin A356 Aluminum Castings\u003c\/li\u003e\n\u003cli\u003e6 Bolt Head Casting with Extra Strength Decks\u003c\/li\u003e\n\u003cli\u003eAdvanced 11° Valve Angle for Maximum Flow \u0026amp; PTV Clearance\u003c\/li\u003e\n\u003cli\u003e2.165” Intake Valve 21-4N Alloy \u0026amp; 1.60” Exhaust Valve 23-8N Super Alloy\u003c\/li\u003e\n\u003cli\u003e0.210\" Intake Free Drop \u0026amp; 0.250\" Exhaust Free Drop\u003c\/li\u003e\n\u003cli\u003e23-8N Alloy has the same high temp characteristics of “Inconel” w\/o the brittleness\u003c\/li\u003e\n\u003cli\u003eAvailable Complete w\/\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eChromoly Retainers, \u003c\/span\u003eTi Retainers, or Bare w\/ Valves\u003c\/li\u003e\n\u003cli\u003eBillet Rocker Arm Stands Included\u003cspan\u003e - Compatible w\/ OEM LS3 Rocker Arms\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003eCompatible w\/ 4 Bolt OEM Engine Blocks - 4.000\" Minimum Bore Required\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s2\"\u003ePrice is for a Pair of Cylinder Heads \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e0.660\" Spring Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e145# @ 1.800\"\u003cbr\u003e400# @ 1.130\"\u003cbr\u003eCB @ 1.070\"\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003e0.700\" Spring Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e170# @ 1.800\"\u003cbr\u003e450# @ 1.115\"\u003cbr\u003eCB @ 1.000\"\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHead Flow Data @ 28inHg, 4.125\" Bore, Intake w\/ Radius, Exhaust w\/o Pipe:\u003c\/p\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003e Smeding 275cc 11 Degree\u003cspan\u003e \u003c\/span\u003eFlow Data\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e135 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e110 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e210 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e145 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e264 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e174 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e325 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e197 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e348 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e216 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.700\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e366 cfm\u003c\/td\u003e\n\u003ctd\u003e228 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Smeding Performance","offers":[{"title":"Bare w\/ Valves \/ No","offer_id":45645357023430,"sku":"27511LS3","price":2295.0,"currency_code":"USD","in_stock":true},{"title":"Bare w\/ Valves \/ Yes; Machine for 1\/2\" Studs","offer_id":45645359612102,"sku":"27511LS3","price":2545.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Steel Retainer) \/ No","offer_id":45645357056198,"sku":"27511LS3","price":2645.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Steel Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645359644870,"sku":"27511LS3","price":2895.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Titanium Retainer) \/ No","offer_id":45645360693446,"sku":"27511LS3","price":2745.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Titanium Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645360726214,"sku":"27511LS3","price":2995.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .700 Spring Kit (Titanium Retainer) \/ No","offer_id":45645357088966,"sku":"27511LS3","price":2875.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .700 Spring Kit (Titanium Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645359677638,"sku":"27511LS3","price":3125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/smeding-performance-smeding-performance-275cc-11-cnc-ls3-cylinder-heads-pair-1228513164.png?v=1774217469"},{"product_id":"smeding-performance-260cc-11-cnc-ls3-cylinder-heads-pair","title":"Smeding Performance 260cc 11° CNC LS3 Cylinder Heads PAIR","description":"\u003cp\u003e\u003cstrong\u003eSmeding Performance 260cc 11° CNC LS3 Cylinder Heads PAIR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e100% Fully CNC Ported 260cc Intake, 95cc Exhaust \u0026amp; 69cc Chambers\u003c\/li\u003e\n\u003cli\u003eVirgin A356 Aluminum Castings\u003c\/li\u003e\n\u003cli\u003e6 Bolt Head Casting with Extra Strength Decks\u003c\/li\u003e\n\u003cli\u003eAdvanced 11° Valve Angle for Maximum Flow \u0026amp; PTV Clearance\u003c\/li\u003e\n\u003cli\u003e2.165” Intake Valve 21-4N Alloy \u0026amp; 1.60” Exhaust Valve 23-8N Super Alloy\u003c\/li\u003e\n\u003cli\u003e0.210\" Intake Free Drop \u0026amp; 0.250\" Exhaust Free Drop\u003c\/li\u003e\n\u003cli\u003e23-8N Alloy has the same high temp characteristics of “Inconel” w\/o the brittleness\u003c\/li\u003e\n\u003cli\u003eAvailable Complete w\/\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eChromoly Retainers, \u003c\/span\u003eTi Retainers, or Bare w\/ Valves\u003c\/li\u003e\n\u003cli\u003eBillet Rocker Arm Stands Included\u003cspan\u003e - Compatible w\/ OEM LS3 Rocker Arms\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003eCompatible w\/ 4 Bolt OEM Engine Blocks - 4.000\" Minimum Bore Required\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s2\"\u003ePrice is for a Pair of Cylinder Heads \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e0.660\" Spring Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e145# @ 1.800\"\u003cbr\u003e400# @ 1.130\"\u003cbr\u003eCB @ 1.070\"\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003e0.700\" Spring Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e170# @ 1.800\"\u003cbr\u003e450# @ 1.115\"\u003cbr\u003eCB @ 1.000\"\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHead Flow Data @ 28inHg, 4.125\" Bore, Intake w\/ Radius, Exhaust w\/o Pipe\u003c\/p\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003e Smeding 260cc 11 Degree\u003cspan\u003e \u003c\/span\u003eFlow Data\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e136 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e112 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e210 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e149 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e263 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e179 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e323 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e198 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e335 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e215 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.700\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e360 cfm\u003c\/td\u003e\n\u003ctd\u003e224 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Smeding Performance","offers":[{"title":"Bare w\/ Valves \/ No","offer_id":45645361774790,"sku":"26011LS3","price":2295.0,"currency_code":"USD","in_stock":true},{"title":"Bare w\/ Valves \/ Yes; Machine for 1\/2\" Studs","offer_id":45645361807558,"sku":"26011LS3","price":2545.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Steel Retainer) \/ No","offer_id":45645361840326,"sku":"26011LS3","price":2645.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Steel Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645361873094,"sku":"26011LS3","price":2895.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Titanium Retainer) \/ No","offer_id":45645361905862,"sku":"26011LS3","price":2745.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Titanium Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645361938630,"sku":"26011LS3","price":2995.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .700 Spring Kit (Titanium Retainer) \/ No","offer_id":45645361971398,"sku":"26011LS3","price":2875.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .700 Spring Kit (Titanium Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645362004166,"sku":"26011LS3","price":3125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/smeding-performance-smeding-performance-260cc-11-cnc-ls3-cylinder-heads-pair-1228513162.png?v=1774217407"},{"product_id":"smeding-performance-255cc-11-as-cast-ls3-cylinder-heads-pair","title":"Smeding Performance 255cc 11° As-Cast LS3 Cylinder Heads PAIR","description":"\u003cp\u003e\u003cstrong\u003eSmeding Performance 255cc 11° As-Cast LS3 Cylinder Heads PAIR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e255cc Intake, 95cc Exhaust \u0026amp; 69cc Chambers\u003c\/li\u003e\n\u003cli\u003eVirgin A356 Aluminum Castings\u003c\/li\u003e\n\u003cli\u003e6 Bolt Head Casting with Extra Strength Decks\u003c\/li\u003e\n\u003cli\u003eAdvanced 11\u003cstrong\u003e°\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eValve Angle for Maximum Flow \u0026amp; PTV Clearance\u003c\/li\u003e\n\u003cli\u003e2.165” Intake Valve 21-4N Alloy \u0026amp; 1.60” Exhaust Valve 23-8N Super Alloy\u003c\/li\u003e\n\u003cli\u003e0.210\" Intake Free Drop \u0026amp; 0.250\" Exhaust Free Drop\u003c\/li\u003e\n\u003cli\u003e23-8N Alloy has the same high temp characteristics of “Inconel” w\/o the brittleness\u003c\/li\u003e\n\u003cli\u003eAvailable Complete w\/ Chromoly Steel Retainers, \u003cspan\u003eTitanium Retainers,\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eor Bare w\/ Valves\u003c\/li\u003e\n\u003cli\u003eBillet Rocker Arm Stands Included - Compatible w\/ OEM LS3 Rocker Arms\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s2\"\u003eCompatible w\/ 4 Bolt OEM Engine Blocks - 4.000\" Minimum Bore Required\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s2\"\u003ePrice is for a Pair of Cylinder Heads \u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e0.660\" Spring Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e145# @ 1.800\"\u003cbr\u003e400# @ 1.130\"\u003cbr\u003eCB @ 1.070\"\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003e0.700\" Spring Specs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e170# @ 1.800\"\u003cbr\u003e450# @ 1.115\"\u003cbr\u003eCB @ 1.000\"\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHead Flow Data @ 28inHg, 4.125\" Bore, Intake w\/ Radius, Exhaust w\/o Pipe\u003c\/p\u003e\n\u003ctable align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\u003e\n\u003cstrong\u003e Smeding 255cc 11 Degree\u003cspan\u003e As-Cast \u003c\/span\u003eFlow Data\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eIntake Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003eExhaust Flow\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.200\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e138 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e111 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.300\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e209 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e150 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.400\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e263 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e178 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.500\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e321 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e196 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.600\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e324 cfm\u003cbr\u003e\n\u003c\/td\u003e\n\u003ctd\u003e213 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e.700\"\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e342 cfm\u003c\/td\u003e\n\u003ctd\u003e222 cfm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Smeding Performance","offers":[{"title":"Bare w\/ Valves \/ No","offer_id":45645363740870,"sku":"25511LS3","price":1795.0,"currency_code":"USD","in_stock":true},{"title":"Bare w\/ Valves \/ Yes; Machine for 1\/2\" Studs","offer_id":45645363773638,"sku":"25511LS3","price":2045.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Steel Retainer) \/ No","offer_id":45645363806406,"sku":"25511LS3","price":2145.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Steel Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645363839174,"sku":"25511LS3","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Titanium Retainer) \/ No","offer_id":45645363871942,"sku":"25511LS3","price":2245.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .660 Spring Kit (Titanium Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645363904710,"sku":"25511LS3","price":2495.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .700 Spring Kit (Titanium Retainer) \/ No","offer_id":45645363937478,"sku":"25511LS3","price":2375.0,"currency_code":"USD","in_stock":true},{"title":"Assembled w\/ .700 Spring Kit (Titanium Retainer) \/ Yes; Machine for 1\/2\" Studs","offer_id":45645363970246,"sku":"25511LS3","price":2625.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/smeding-performance-smeding-performance-255cc-11-as-cast-ls3-cylinder-heads-pair-copy-1228513161.png?v=1774217347"},{"product_id":"pair-of-btr-canted-valve-cnc-ported-cathedral-port-cylinder-heads-6-bolt-bare-or-assembled","title":"PAIR of BTR Canted Valve CNC Ported Cathedral Port Cylinder Heads (6-Bolt) - Bare or Assembled","description":"\u003cp\u003e\u003cstrong\u003ePAIR of BTR Canted Valve CNC Ported Cathedral (LS1\/LS2\/LS6) Port Cylinder Heads (6-Bolt) - Bare or Assembled\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDue to the popularity of the new CVH cylinder heads, lead times vary based on product option.  Some options are in stock, others are subject to additional lead time.  Please contact us directly for the most accurate ship date estimate if needed.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBTR has brought the latest innovation in LS cylinder tech to market with these brand new BTR canted valve cylinder heads. These are available as CNC ported bare castings (with or without valves - accepts OEM Gen 5 LT valves) OR fully assembled with valves and BTR's proven SK001 .660\" lift dual spring kit. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhat happens when you combine two lifetimes of cylinder head research and development? The BTR CV cylinder head for LS! When you have a cylinder head casting legend like Rick Smith on board (Father of the Hi-Port, A460, Twisted Wedge and more!) and decades of Brian Tooley's porting \u0026amp; cylinder head flow bench experience, you end up with serious game-changing performance!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThere’s no other low-cost premium cast all-American canted-valve LS cylinder head on the market! By rotating the intake 5° and exhaust 3°, we’ve seen over 360+ CFM of intake flow… at only .650” lift with BTR's in-house port program! BTR put NASCAR-proven canted valve tech into the LS head and made it attainable. These heads use regular Gen 3 \u0026amp; 4 LS1 pedestal type rockers \u0026amp; bolts, valve covers \u0026amp; manifolding… and use Gen V LT valves, spark plugs and valve spring packages to make building them out EASY with OEM-compatible parts! If you have a street machine or a racing class that allows a canted valve head, this is the advantage you’ve been waiting for.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis cylinder head ships fully machined and CNC ported with finished valve guides and seats installed. \u003cstrong\u003eLT1 type valves, springs \u0026amp; valve spring hardware are NOT included with the bare cylinder head option.\u003c\/strong\u003e You can elect to use OEM-type LT1 valves, or we offer LT4 Ti Intake \u0026amp; L8T Inconel exhaust valves as an upgrade for higher RPM \/ severe duty. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBTR exclusive canted-valve design allows for maximum valve unshrouding and sizing - Cathedral fits a 3.780\" bore, LS3 style fits a 3.820\" bore!\u003c\/li\u003e\n\u003cli\u003e11° intake (5° canted) and 13° exhaust (3° canted)\u003c\/li\u003e\n\u003cli\u003eCast in Iowa - Designed, tested, machined \u0026amp; sold in Kentucky!\u003c\/li\u003e\n\u003cli\u003eLS1 style port finished to 250cc - chamber finished to 63cc\u003c\/li\u003e\n\u003cli\u003eIntake flow - Over 360 CFM at .650” when used with BTR’s port program!\u003c\/li\u003e\n\u003cli\u003eUses OEM LT1 2.125” steel hollow-stem intake and 1.590” steel exhaust valves\u003c\/li\u003e\n\u003cli\u003eLT4 Ti intake and L8T Inconel™ exhaust valves can also be used with lash caps\u003c\/li\u003e\n\u003cli\u003eSuperior OEM-type powdered metal guides\u003c\/li\u003e\n\u003cli\u003eUtilizes OEM-style straight LS1 pedestal rockers, OEM-style intake \u0026amp; exhaust manifolds, and LS-style valve covers\u003c\/li\u003e\n\u003cli\u003eUses Gen V LT style long reach spark plugs and valve spring kits up to 1.350” O.D. spring\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eClears 3\/8” pushrods – Typical length intake 7.925-8.025” \u0026amp; exhaust 7.900-8.000”\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eExtra-thick .750” boost-friendly deck in popular “6-bolt” configuration\u003c\/li\u003e\n\u003cli\u003eBTR \/ Wiseco Canted-Valve specific pistons available for most popular LS applications\u003c\/li\u003e\n\u003cli\u003eMultiple Patents Pending!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eINSTALLATION NOTES\u003c\/strong\u003e\u003c\/span\u003e – Uses LS1 rocker bolts. M10x1.5 Accessory hole commonly used for dipstick is shallower than OEM to prevent water jacket intrusion, please check your dipstick bolt prior to final assembly. Like many aftermarket heads, a sealant will be required on intake rocker bolt threads that intersect the port. ALWAYS VERIFY NEVER ASSUME all engine clearances before final assembly. \u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Assembled (BTR SK001 Spring Kit)","offer_id":46013760635078,"sku":"BTR-CVH1C-6Ax2","price":3199.98,"currency_code":"USD","in_stock":true},{"title":"Bare w\/o Valves","offer_id":46013760667846,"sku":"BTR-CVH1C-6Ux2","price":2599.98,"currency_code":"USD","in_stock":true},{"title":"Bare w\/ LT1 Style Valves","offer_id":46013760700614,"sku":"BTR-CVH1C-6Ux2+BTR-29513x8+BTR-74746x8","price":2859.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/brian-tooley-racing-pair-of-btr-canted-valve-cnc-ported-cathedral-port-cylinder-heads-6-bolt-bare-or-assembled-1246928374.png?v=1783038549"},{"product_id":"pair-of-btr-canted-valve-cnc-ported-rectangular-ls3-port-cylinder-heads-6-bolt-bare-or-assembled","title":"PAIR of BTR Canted Valve CNC Ported Rectangular (LS3) Port Cylinder Heads (6-Bolt) - Bare or Assembled","description":"\u003cp\u003e\u003cstrong\u003ePAIR of BTR Canted Valve CNC Ported Rectangular (LS3) Port Cylinder Heads (6-Bolt) - Bare or Assembled\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDue to the popularity of the new CVH cylinder heads, lead times vary based on product option.  Some options are in stock, others are subject to additional lead time.  Please contact us directly for the most accurate ship date estimate if needed.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBTR has brought the latest innovation in LS cylinder tech to market with these brand new BTR canted valve cylinder heads. These are available as CNC ported bare castings (with or without valves - accepts OEM Gen 5 LT valves) OR fully assembled with valves and BTR's proven SK001 .660\" lift dual spring kit. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhat happens when you combine two lifetimes of cylinder head research and development? The BTR CV cylinder head for LS! When you have a cylinder head casting legend like Rick Smith on board (Father of the Hi-Port, A460, Twisted Wedge and more!) and decades of Brian Tooley's porting \u0026amp; cylinder head flow bench experience, you end up with serious game-changing performance!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThere’s no other low-cost premium cast all-American canted-valve LS cylinder head on the market! By rotating the intake 5° and exhaust 3°, we’ve seen over 360+ CFM of intake flow… at only .650” lift with BTR's in-house port program! BTR put NASCAR-proven canted valve tech into the LS head and made it attainable. These heads use regular Gen 3 \u0026amp; 4 LS1 pedestal type rockers \u0026amp; bolts, valve covers \u0026amp; manifolding… and use Gen V LT valves, spark plugs and valve spring packages to make building them out EASY with OEM-compatible parts! If you have a street machine or a racing class that allows a canted valve head, this is the advantage you’ve been waiting for.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis cylinder head ships fully machined and CNC ported with finished valve guides and seats installed. \u003cstrong\u003eLT1 type valves, springs \u0026amp; valve spring hardware are NOT included with the bare cylinder head option.\u003c\/strong\u003e You can elect to use OEM-type LT1 valves, or we offer LT4 Ti Intake \u0026amp; L8T Inconel exhaust valves as an upgrade for higher RPM \/ severe duty. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBTR exclusive canted-valve design allows for maximum valve unshrouding and sizing - Cathedral fits a 3.780\" bore, LS3 style fits a 3.820\" bore!\u003c\/li\u003e\n\u003cli\u003e11° intake (5° canted) and 13° exhaust (3° canted)\u003c\/li\u003e\n\u003cli\u003eCast in Iowa - Designed, tested, machined \u0026amp; sold in Kentucky!\u003c\/li\u003e\n\u003cli\u003eLS3 style port finished to 260cc - chamber finished to 64cc\u003c\/li\u003e\n\u003cli\u003eIntake flow - Over 360 CFM at .650” when used with BTR’s port program!\u003c\/li\u003e\n\u003cli\u003eUses OEM LT1 2.125” steel hollow-stem intake and 1.590” steel exhaust valves\u003c\/li\u003e\n\u003cli\u003eLT4 Ti intake and L8T Inconel™ exhaust valves can also be used with lash caps\u003c\/li\u003e\n\u003cli\u003eSuperior OEM-type powdered metal guides\u003c\/li\u003e\n\u003cli\u003eUtilizes OEM-style straight LS1 pedestal rockers, OEM-style intake \u0026amp; exhaust manifolds, and LS-style valve covers\u003c\/li\u003e\n\u003cli\u003eUses Gen V LT style long reach spark plugs and valve spring kits up to 1.350” O.D. spring\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eClears 3\/8” pushrods – Typical length intake 7.925-8.025” \u0026amp; exhaust 7.900-8.000”\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eExtra-thick .750” boost-friendly deck in popular “6-bolt” configuration\u003c\/li\u003e\n\u003cli\u003eBTR \/ Wiseco Canted-Valve specific pistons available for most popular LS applications\u003c\/li\u003e\n\u003cli\u003eMultiple Patents Pending!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eINSTALLATION NOTES\u003c\/strong\u003e\u003c\/span\u003e – Uses LS1 rocker bolts. M10x1.5 Accessory hole commonly used for dipstick is shallower than OEM to prevent water jacket intrusion, please check your dipstick bolt prior to final assembly. Like many aftermarket heads, a sealant will be required on intake rocker bolt threads that intersect the port. ALWAYS VERIFY NEVER ASSUME all engine clearances before final assembly. \u003c\/p\u003e","brand":"Brian Tooley Racing","offers":[{"title":"Assembled (BTR SK001 Spring Kit)","offer_id":46013765255366,"sku":"BTR-CVH3C-6Ax2","price":3199.98,"currency_code":"USD","in_stock":true},{"title":"Bare w\/o Valves","offer_id":46013765288134,"sku":"BTR-CVH3C-6Ux2","price":2599.98,"currency_code":"USD","in_stock":true},{"title":"Bare w\/ LT1 Style Valves","offer_id":46013765320902,"sku":"BTR-CVH3C-6Ux2+BTR-29513x8+BTR-74746x8","price":2859.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/brian-tooley-racing-pair-of-btr-canted-valve-cnc-ported-rectangular-ls3-port-cylinder-heads-6-bolt-bare-or-assembled-1246928364.png?v=1783037890"},{"product_id":"lpc-225cc-ls6-style-cathedral-port-cylinder-heads-pair-assembled","title":"LPC 225cc As Cast Cathedral Port Cylinder Heads PAIR - Assembled","description":"\u003cp\u003eLPC LS Cylinder Heads are an exceptional value for guys who are looking to upgrade their heads and are looking for an economical option that flows comparably to ported OEM castings or similar aftermarket castings.  These come fully assembled with LPC's single beehive springs and steel retainers, rated at .625\" lift.   They feature 225cc runners and 64cc combustion chambers.  Intake valves are 2.00\" and exhaust valves are 1.60\"\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSOLD AS A PAIR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eMATERIAL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e355-T6 High Density Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eAPPLICATION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLS1,2,6 Block Chevy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eASSEMBLED OR BARE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAssembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eINTAKE RUNNER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e225cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eCHAMBER VOLUME\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eMAX LIFT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.625″”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eINTAKE VALVE DIAMETER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.000″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eEXHAUST VALVE DIAMETER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.600″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eVALVE STEM DIAMETER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSINGLE OR DUAL SPRING\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBeehive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eVALVE SPRING OD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.265″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSPRING SEAT DIA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.320″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eVALVE GUIDE OD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.500″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSPARK PLUG TYPE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4 Reach, Tapered Seat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSOLD AS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndividually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"LPC","offers":[{"title":"Default Title","offer_id":46084155441350,"sku":"LPH-LS1-2x2","price":1499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/lpc-lpc-225cc-as-cast-cathedral-port-cylinder-heads-pair-assembled-1249504243.png?v=1784311689"},{"product_id":"gap-low-buck-ls-heads-cam-package","title":"GAP \"Low Buck\" LS Heads \u0026 Cam Package","description":"\u003cp\u003e\u003cstrong\u003eIntroducing the latest continuation to our popular \"low buck\" parts bundle kits: GAP \"Low Buck\" LS Heads \u0026amp; Cam Package\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGot a budget build that needs a fresh set of heads?  Looking to make a little more power than factory 243s or 799s can offer, but don't want to spend a fortune CNC porting stock heads?  This kit has you covered!  Featuring LPC's 225cc heads, Elgin's E1840P \"Sloppy Stage 2\" camshaft, and a matching set of hardened chromoly pushrods all bundled up at a price point that comes it at less than most aftermarket heads alone.  This kit is ready to bolt on with fully assembled heads that feature  .625\" lift rated single beehive springs with steel retainers.  Pair this up with one of our \u003ca href=\"https:\/\/www.glennsautoperformance.com\/collections\/gaskets\/products\/btr-ls-gen-3-top-end-rebuild-kit\"\u003eGen 3\u003c\/a\u003e or \u003ca href=\"https:\/\/www.glennsautoperformance.com\/collections\/gaskets\/products\/btr-ls-gen-4-top-end-rebuild-kit\"\u003eGen 4\u003c\/a\u003e BTR top end rebuild kits and you're ready to add some power while freshening up that junkyard LS!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePAIR of fully assembled LPC 225cc as-cast cathedral port cylinder heads\u003c\/li\u003e\n\u003cli\u003eElgin E1840P \"Sloppy Stage 2\" Camshaft - Specs: 228\/230 .585\"\/.585\" 112 LSA\u003c\/li\u003e\n\u003cli\u003eHardened Chromoly 5\/16\" DIA  .080\" wall 7.400\" Pushrods\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eLPC LS Cylinder Heads are an exceptional value for guys who are looking to upgrade their heads and are looking for an economical option that flows comparably to ported OEM castings or similar aftermarket castings.  These come fully assembled with LPC's single beehive springs and steel retainers, rated at .625\" lift.   They feature 225cc runners and 64cc combustion chambers.  Intake valves are 2.00\" and exhaust valves are 1.60\"\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Elgin E1840P is the \"original\" Sloppy Stage 2 camshaft, made famous by the OG sloppy mechanic himself, Matt Happel.  This camshaft is an excellent choice for guys looking to put together a proven street\/strip combination on a budget.  This camshaft has a fairly aggressive profile, so it will have a noticeably choppy idle and perform really well throughout the majority of the mid and upper RPM range.  We recommend pairing this camshaft with a converter that has a stall speed of 2800 RPM or higher.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit comes with both cylinder heads\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eMATERIAL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e355-T6 High Density Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eAPPLICATION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLS1,2,6 Block Chevy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eASSEMBLED OR BARE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAssembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eINTAKE RUNNER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e225cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eCHAMBER VOLUME\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64cc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eMAX LIFT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.625″”\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eINTAKE VALVE DIAMETER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.000″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eEXHAUST VALVE DIAMETER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.600″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eVALVE STEM DIAMETER\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSINGLE OR DUAL SPRING\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBeehive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eVALVE SPRING OD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.265″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSPRING SEAT DIA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.320″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eVALVE GUIDE OD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e.500″\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSPARK PLUG TYPE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4 Reach, Tapered Seat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong class=\"upper\"\u003eSOLD AS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndividually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"LPC","offers":[{"title":"Default Title","offer_id":46119443169478,"sku":"LowBuckHeadCamPackage","price":1899.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2716\/4086\/files\/lpc-gap-low-buck-ls-heads-cam-package-1250874309.png?v=1784851689"},{"product_id":"mangum-racing-229cc-ls1-style-cnc-ported-cathedral-cylinder-heads-pair-assembled-4-bolt","title":"Mangum Racing 229cc LS1 Style CNC Ported Cathedral Cylinder Heads PAIR - Assembled - 4 Bolt","description":"\u003cp\u003e\u003cstrong\u003eMangum Racing 229cc LS1 Style CNC Ported Cathedral Cylinder Heads PAIR - Assembled - 4 Bolt\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003eMangum Racing CNC Ported MR 15° LS Cathedral Port Cylinder Heads\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBuilt from your choice of 4-bolt or 6-bolt 15° LS casting featuring increased deck thickness, the MR 15° LS1 is engineered for serious naturally aspirated and boosted combinations that demand airflow, strength, and repeatability, while maintaining OEM valve angle and valve location geometry.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFeaturing a 2.02\/1.57 valve combo the 229cc version easily clears the bores on 4.8L\/5.3L engines and up!  This is not a simple LS6 cylinder head copy, this is a ground up designed cylinder head with fully cnc ported ports \u0026amp; chambers for optimum power \u0026amp; performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis casting is designed to support 1,500+ horsepower combinations when paired with the proper short block and induction system, making it an ideal solution for builders who need maximum performance without moving away from stock valve layout.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach set is fully CNC ported in-house on new Centroid 5-axis machining centers and finished on Newen seat and guide equipment. 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