PAIR of BTR Canted Valve CNC Ported Cathedral (LS1/LS2/LS6) Port Cylinder Heads (6-Bolt) - Bare or Assembled
Due 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.
BTR 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.
What 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 & cylinder head flow bench experience, you end up with serious game-changing performance!
There’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 & 4 LS1 pedestal type rockers & bolts, valve covers & 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.
This cylinder head ships fully machined and CNC ported with finished valve guides and seats installed. LT1 type valves, springs & valve spring hardware are NOT included with the bare cylinder head option. You can elect to use OEM-type LT1 valves, or we offer LT4 Ti Intake & L8T Inconel exhaust valves as an upgrade for higher RPM / severe duty.
Features:
- BTR exclusive canted-valve design allows for maximum valve unshrouding and sizing - Cathedral fits a 3.780" bore, LS3 style fits a 3.820" bore!
- 11° intake (5° canted) and 13° exhaust (3° canted)
- Cast in Iowa - Designed, tested, machined & sold in Kentucky!
- LS1 style port finished to 250cc - chamber finished to 63cc
- Intake flow - Over 360 CFM at .650” when used with BTR’s port program!
- Uses OEM LT1 2.125” steel hollow-stem intake and 1.590” steel exhaust valves
- LT4 Ti intake and L8T Inconel™ exhaust valves can also be used with lash caps
- Superior OEM-type powdered metal guides
- Utilizes OEM-style straight LS1 pedestal rockers, OEM-style intake & exhaust manifolds, and LS-style valve covers
- Uses Gen V LT style long reach spark plugs and valve spring kits up to 1.350” O.D. spring
- Clears 3/8” pushrods – Typical length intake 7.925-8.025” & exhaust 7.900-8.000”
- Extra-thick .750” boost-friendly deck in popular “6-bolt” configuration
- BTR / Wiseco Canted-Valve specific pistons available for most popular LS applications
- Multiple Patents Pending!
INSTALLATION NOTES – 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.
