AFR Chevy 335cc Enforcer As-Cast BBC Cylinder Head, 122cc Chambers, DIY No Parts

AFR is proud to announce the release of its NEW Enforcer series of As-Cast cylinder heads. Comprised of four new budget-friendly cylinder heads, these price conscience offerings do not come fully assembled. This DIY package contains no intake/exhaust valves, springs, retainers, rocker studs, and guide plates. You can contact us for specific parts from AFR to complete your cylinder head.

For the pre-assembled/complete 335cc BBC Enforcer Head, check out the part number: AFR 3001.

Sold as a single piece, 2 pieces required per engine.

AFR's 335cc BBC Enforcer Cylinder head features its Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allow 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.

Sold as a single piece, 2 pieces required per engine.

335cc BBC Enforcer Flow Chart
	.200	.300	.400	.500	.600	.700
Int	140	207	265	296	336	355
Exh	119	172	211	239	249	255

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Basic Package Components	Part #
3-angle Valve Job As Cast Combustion Chambers As Cast Exhaust Ports As Cast Intake Ports

Specifications, Features, and Optional Supporting Components

Head Material	A356 Aluminum
Intake Port Volume	325cc
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.375"
Combustion Chamber Size	122cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	24°/4° Int, 15°/4° Exh
Valve Spring Pocket Diameter	1.750"
Max Valve Spring Pocket Machining	1.750"
Warning::Do not machine spring pad any deeper.
Deck Thickness	0.45"
Minimum Bore Diameter	4.25"
Intake Port Gasket	AFR #6856
Exhaust Port Gasket	AFR #6858
Head Gasket, Fel-Pro #1047 (Gen V and VI)	AFR #6849
Head Gasket, Fel-Pro #1017-1 (Gen IV)	AFR #6850
Head Bolts, ARP 135-3703 (Gen IV)	AFR #6306
Head Bolts, ARP 135-3707 (Gen V)	AFR #6306
Head Studs, ARP 235-4713	AFR #6307
Head Bolt Washers, Manley	AFR #6320
Flat Mill	.006" per cc/ Maximum 105cc As Cast
Angle Mill	.009" per cc/Maximum 100cc As Cast
Suggested Manifold	Victor Jr or Super Victor
Spark Plug Starting Range	Autolite 3924

Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes. .
Note: Angle mills might require a .120" Thick intake gasket.