AFR Heads, 1076 SBC LT4 AFR 227 Eliminator Race Ready Heads

AFR SB Chevy Eliminator Racing Heads and SB Chevy LT-4 Heads are high flowing 227cc intake port small block Chevy angle plug cylinder heads, 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 65 or 75cc combustion chambers and 80cc exhaust ports with a 3/4" thick head deck (ideal for nitrous or blower applications). In addition AFR 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 degree 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 heads are available in either standard or spread port exhaust. AFR offset stud girdles are the only special parts required. Some applications require shaft mount rockers or .050 offset intake rocker arms for durability and reliability of valve train components. Standard rocker arms can be used but the intake rocker arm will be at a slight angle and the roller tip will not be perfectly centered on valve tip. Not recommended for street use, unless shaft mount rockers are used. The exhaust port is raised .250 over GM L98 Head.