AFR Chevy 200cc Enforcer As-Cast SBC Cylinder Head, 69cc Chambers, Straight Plug, Assembled - Flat Tappet Springs

AFR is proud to announce the release of its NEW Enforcer series of As-Cast cylinder head. Comprised of four new budget-friendly cylinder head, this price conscience offerings come fully assembled and use the same high-quality components found in their higher-end CNC ported cylinder head, such as ARP rockers studs, .550 lift hydraulic flat tappet springs, Viton valve seals, hardened spring cups, ductile Iron seats, AFR adjustable guide plates, and their Stainless Steel valves.

The head is made from a permanent mold casting that comes with As-Cast surfaces on the intake runners, exhaust runners, and combustion chambers. This head is a perfect choice for anyone looking to upgrade to an aluminum head with modern port designs for their muscle car or street rod.

Sold as a single piece, 2 pieces required per engine. Steam holes pre-drilled on these heads. Will work on any SBC block including 350 and 400.

AFR's 200cc SBC Enforcer Cylinder head feature a 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 350 to 400 Cubic Inch operating below 6000 RPM.

200cc As Cast Flow Chart
	.200	.300	.400	.500	.550	.600
Int	138	192	233	260	265	N/A
Exh	108	142	170	195	200	N/A

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 #
As-Cast Combustion Chambers As-Cast Exhaust Ports As-Cast Intake Ports 3-angle Valve Job
8mm Stainless Steel 2.050 x 4.900 O.A.L. Race Intake Valve	AFR #7252
8mm Stainless Steel 1.600 X 4.950 O.A.L. Race Exhaust Valve	AFR #7250
AFR 1.437" OD Hydraulic Flat Tappet Dual Valve Spring, 125 lbs on seat, .550" maximum lift, Max RPM 6100-6300	AFR #8020
7° Chrome Moly Retainers 1.245" O.D x .885" I.D x .655" I.D	AFR #8514
7° Bead Lock Valve Keepers	AFR #9007
ARP 3/8" Rocker Studs	AFR #6409
Adjustable 5/16" Guide Plates	AFR #6103
8mm LS Enforcer Viton Valve Seals .620" O.D x .490" I.D	AFR #6615
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D	AFR #8042

Specifications, Features, and Optional Supporting Components

Head Material	A356 Aluminum
Intake Port Volume	200cc
Intake Port Dimension	2.080" H x 1.270" x 5/16 Radius
Intake Port Location	Stock
Exhaust Port Volume	74cc
Exhaust Port Dimension	1.450" H x 1.550" W
Exhaust Port Location	Stock
Combustion Chamber Size	69cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	23°
Valve Spring Pocket Diameter	1.437" O.D
Max Valve Spring Pocket Machining	1.580" O.D
Warning: Do not machine spring pad any deeper.
Deck Thickness	.470"
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
Intake Port Gasket	AFR #6900
Exhaust Port Gasket	AFR #6905
Head Gasket, 350cid Fel-Pro #1003	AFR #6800
Head Gasket, 400cid Fel-Pro #1014	AFR #6802
SB Chevy Head Bolt Kit, ARP #134-3701	AFR #6310
SB Chevy Head Stud Kit, 12 Point Nuts, ARP #234-4301	AFR #6305
Head Bolt Washers, Manley	AFR #6320
Suggested Manifold	AFR #4810
Suggested Manifold	AFR #4812
Suggested Manifold	RPM Performer or Vic Jr.
Flat Mill	.006" per cc 56cc Maximum
Spark Plug Starting Range	Autolite 3924

Important: Do not port match your intake manifold to any Fel-Pro gasket as it does not precisely match an AFR head.
Note: Milling head deck will affect flow numbers.
These heads are perimeter bolt only, no option for center bolt. The heads have the 86' and older bolt pattern and the Vortec bolt pattern, but only the 86' and older intakes will work due to the port dimensions. The Vortec is a taller port and won't match.