Afr Chevy 210cc Enforcer As-Cast Ls1 Cylinder Head, 64cc 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 210cc LS1 Enforcer Head, check out the part number: AFR 1501. Sold as a single piece, 2 pieces required per engine.
AFR's 210 LS1 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 OEM engine operating below 6300 RPM. Sold as a single piece, 2 pieces required per engine. 210cc LS1 Street Head Flow Chart   .200 .300 .400 .500 .550 .600 Int 148 209 253 265 268 268 Exh 105 150 180 199 204 207 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  
Specifications, Features, and Optional Supporting Components Head Material A356 Aluminum Intake Port Volume 210ccm Intake Port Dimension 3.190"H x 1.015"W x5/16 top 3/8" bottom Intake Port Location Stock Exhaust Port Volume 82cc Exhaust Port Dimension 1.400" H x 1.660" W Exhaust Port Location Stock Combustion Chamber Size 64cc Valve Cover Bolt Pattern Perimeter Bolt Valve Angle 15°
Valve Spring Pocket Diameter 1.500" O.D Max Valve Spring Pocket Machining 1.500" O.D Deck Thickness 0.425" Minimum Bore Diameter 3.900" Spark Plug Dimensions 14mm x .750" w/Tapered seat Head Gasket Factory GM LS2 Intake Port Gasket GM or FAST Exhaust Port Gasket GM#12558573 Head Bolts (97-03) AFR #6330 Head Studs (97-03) AFR #6331 Head Bolts (04+) AFR #6334 Head Studs (04+) AFR #6335 Head Bolt Washers, Manley AFR #6320 Suggested Manifold FAST 90mm, 92mm, or 102mm Flat Mill .006" per cc 58cc Maximum Spark Plug Starting Range NGK TR55  Important: Do not port match you intake manifold to any Fel-Pro gasket as it does not precisely match an AFR head.
Warning:Do not machine spring pad any deeper.
Note: Milling head deck will affect flow numbers.