Complete 210cc LS1 Enforcer Aluminium Cylinder Heads, Each 64ccCombustion Chamber. Suit GM LS1/LS2/LS6

AFR's 210 LS1/LS2/LS6 Enforcer Cylinder Heads feature our Permanent Mold "As-Cast" Technologysurfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your OEM engine operating below 6300 RPM.

They come fully assembled with the identical components found in our higherend CNC ported cylinder heads;such as PAC Racing springs, viton valve seals, machined bead valve locks (not stamped), hardened spring seats and our one piece 8mm 214N Stainless Steel valves. They are available without anyparts for the DIY. Sold as a single piece, 2 are required per engine.

Included Components:
As Cast Combustion Chambers
As Cast Exhaust Ports
As Cast Intake Ports
3-angleValve Job
8mm Bead Lock Intake Valve, 2.020" x 4.900" Overall Valve Length
8mm Bead Lock Exhaust Valve, 1.600" x 4.900" Overall Valve Length
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500
7° Chrome Moly Retainers 1.245" O.Dx .885" I.D x .655" I.D
7° Bead Lock Valve Keepers
Viton ValveSeals .620" O.D x .490" I.D
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D