AFR Big Block Chevrolet "Enforcer" 335cc Rectangle Port Heads
Air Flow Research's "Budget Friendly" cylinder heads
AFR's 335cc big block Chevrolet "Enforcer" series cylinder heads feature our permanent mold “As-Cast” technology surfaces on the intake runners, exhaust runners and combustion chambers which allow for extremely accurate and repeatable port location and performance. This budget friendly head is perfect for your 509 to 540 cubic inch operating below 6500 RPM.
They come fully assembled with the identical components found in our higher end CNC ported cylinder heads such as ARP rockers studs, PAC Racing springs, viton valve seals, AFR guide plates, machined bead valve locks (not stamped), hardened spring seats and our one piece 8mm 21 4N stainless steel valves. Sold as a PAIR of heads.
Other valvetrain options are available at an extra cost.
FEATURES:
Intake Valve: 2.250" x 5.500" x 11/32" stems
Exhaust Valve: 1.880” x 5.450” x 11/32" stems
PAC Racing 1940 hydraulic roller dual valve springs
10º Chromemoly steel retainers
10° Valve locks with lash cap recess
ARP 7/16" rocker exhaust studs
ARP 7/16" rocker intake studs
3/8” Push rod guide plates
Steel shell viton valve seals
SPECIFICATIONS:
Intake Port Volume: 335cc
Intake Port Dimension: 2.510" H x 1.820" W x 3/8" Radius
Intake Port Location: Stock
Exhaust Port Volume: 140cc
Exhaust Port Dimension: 1.690" H x 1.900" W
Exhaust Port Location: Raised .357" (over stock)
Combustion Chamber Size: 122cc (as cast)
Valve Angle: 24°/4° Intake - 15°/4° Exhaust
Deck Thickness: .450"
Minimum Bore Diameter: 4.250"
PART NUMBER: AFR-3001-1
Due to the ever increasing costs and limited availability of certain materials, skyrocketing shipping costs, credit card usury fees as well as the inept policies of the current administration, we can no longer provide set pricing on any products on this web site. Email directly at info@FlowTechInduction.com for the latest pricing and availability.
