FAST LSXRT - (CATHEDRAL-102mm) BLACK 146602B
FAST LSXRT - (CATHEDRAL-102mm) BLACK 146602B

FAST LSXRT - (CATHEDRAL-102mm) BLACK 146602B

$971.04

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PRODUCT DETAILS

FAST LSXRT INTAKE MANIFOLD - CATHEDRAL #146602B

Designed specifically for GM 4.8/5.3/6.0L cathedral port cylinder head-equipped truck engines and cathedral port LS1, LS2, LS6 applications where hood clearance is not a concern, the FAST™ LSXRT™102mm Intake Manifold follows the path chartered by the original FAST ™ LSX™ Gen III Intake by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake, on a stock 6.0L engine with a Big Mouth 102mm Throttle Body™. Extensive testing led to a runner design that is longer and less restrictive and gives the user the ability to remove individual runners from the manifold for modification.

The LSXRT™ is constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While it features a 102mm air inlet that was designed for the FAST™ Big Mouth 102mm Throttle Body™, it can also be used with OEM electronic 78/90mm or aftermarket 90/92mm throttle bodies (three-bolt electronic throttle bodies require an adapter). Other features include integrated nitrous bungs and a precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues.

Features & Benefits:

  • 25 HP gain when used w/ 102mm Big Mouth Throttle Body™ on a stock 6.0L truck engine
  • Constructed from proprietary precision injection molded polymer;  Lighter than aluminum w/ lower heat soak propensity & greater strength over stock molded intake
  • Innovative multi-layer design w/ removable runners for quick & easy disassembly & porting
  • Integrated nitrous bungs; plug-and-play w/ ZEX™ LSX™ Direct Port Nitrous System
  • Patented Design - U.S. Patent No 8,567,366

 

Part Number 146602B
Brand Fast
Engine Type Gen III/Gen IV
Port Style Cathedral

Throttle Body Port

102mm

 

NOTES: Trailblazer SS requires cowl modifications to clear. Compatible with OE fuel rails with the use of FAST adapter kit (PN: 146030 or 146031) depending on year. Or compatible with FAST billit fuel rail kit PN: 146028.

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