BTR CANTED VALVE LS CYLINDER HEAD - LS3 6 BOLT CNC PORTED - BTR-CVH3C-6A

This cylinder head is sold individually and ships fully machined and CNC ported with finished valve guides and seats installed. LT1 type valves are installed to correct height with our .660" lift Platinum spring kit, ready for your stock type LS1 rocker arm setup, then bolt-on and go! 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! LS3 style port finished to 260cc - Chamber finished to 64cc Intake flow - Over 370 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 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. C5/C6 Corvette alternator brackets WILL require minor clearancing to bolt flush to the engine. Due to the outer dimensions of most aftermarket cylinder head castings being slightly different than OEM, some bracket or manifold clearancing may be needed for some applications. Test fit all manifolds and brackets before installation.