AFR Head 1501 210cc LS1 Enforcer Cylinder Head 64cc Chambers

AFR's 1501 210 LS1 Enforcer Cylinder Heads feature AFR Permanent Mold “As-Cast” Technology surfaces 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. This cylinder head comes fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as PAC Racing springs, viton valve seals, machined bead valve locks (not stamped), hardened spring seats and ductile iron seats (not powdered metal) and one piece 8mm 21 4N Stainless Steel valves.

As Cast Combustion Chambers
As Cast Exhaust Ports
As Cast Intake Ports
3-angle Valve 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° Retainers 1.245" O.D x .885" I.D x .655" I.D
7° Bead Lock Valve Keepers
Viton Valve Seals .620" O.D x .490" I.D
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D