AFR 227cc SBC Racing Cylinder Head

Timeless Design - The first in our line of 60/40 Valve Spacing

227cc Racing Head, Angle Plug, Standard Exhaust 1067

227cc Racing Head, Angle Plug, Spread Port Exhaust 1075

227cc Racing Head, Angle Plug, Standard Exhaust 1068

AFR 227cc SBC Eliminator Racing Cylinder Head

Timeless Design - The first in our line of 60/40 Valve Spacing

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High flowing AFR 227cc intake port small block Chevy angle plug aluminum cylinder heads are available in two stages of performance. The Race Ready version features 100% CNC ported intakes while the higher flowing Competition version features 100% CNC ported intakes with greater detail. Both come with 100% CNC ported 65cc or 75cc combustion chambers and 80cc exhaust ports with a 3/4” thick head deck (ideal for nitrous or blower applications). In addition we also offer the “as cast” Stage 1 heads for 227cc performance on a budget. Standard valves are lightweight 8mm 2.100 intake and 1.600 exhaust with AFR’s hardened ductile iron interlocking valve seats. The 227 has 60/40 valve spacing and piston valve pockets should be checked. The exceptional flow characteristics and 23° valve angle make this the perfect head for 350 to 434 cid engines in drag cars, sprint cars, and late model oval trackers operating from 4500 rpm and up. The 227cc cylinder heads are available in either standard or spread port exhaust. AFR offset stud girdles are the only special parts required (see footnotes here). Requires shaft mount rockers or .050 offset rocker arms for durability and reliability of valve train components. With the .050 offset the intake rocker arm will be at a slight angle and the roller tip will not be perfectly parallel or centered on the valve tip. Not recommended for street use, unless shaft mount rocker is used. The Exhaust port is raised .250 over GM L-98 cylinder head.

227cc SBC Aluminum Cylinder Head Race Ready Flow Chart

Tested on 4.125 Bore

227cc SBC Aluminum Cylinder Head Comp. Flow Chart

Tested on 4.125 Bore

Note: Milling head deck will affect flow numbers. Angle mills might require .120 thick intake gasket.