AFR Head 3001 335cc BBC Enforcer Cylinder Head, 122cc

AFR's 3001 335cc BBC 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 509 to 540 Cubic Inch operating below 6500 RPM. Heads come fully assembled with the identical components found in their higher end CNC ported cylinder heads; such as ARP rockers studs, PAC Racing springs, viton valve seals, AFR adjustable guide plates, 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.

3-angle Valve Job
As Cast Combustion Chambers
As Cast Exhaust Ports
As Cast Intake Ports
11/32" Intake Valve, 2.250" x 5.500" O.A.L
11/32” Nail Head Exhaust Valve, 1.880” x 5.450” O.A.L.
PAC Racing #1940 1.550” OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725” maximum lift, Max RPM 6500-6700
10º Manley Steel Retainers 1.500” O.D x 1.120” I.D x .705” I.D
10° 11/32" Valve Locks with lashcap recess
ARP 7/16" Rocker Exhaust Studs
ARP 7/16" Rocker Intake Studs
3/8” Guide Plates
11/32" Viton Valve Seals
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D