AFR 1341 Enforcer SBF Cylinder Head

The Air Flow Research (AFR) 1341 Enforcer SBF cylinder heads are a budget-friendly performance upgrade for Small Block Ford engines, specifically designed for 302 to 363 cubic inch displacements operating below 6000 RPM. These heads utilize permanent mold "As-Cast" technology on the intake runners, exhaust runners, and combustion chambers, ensuring accurate and repeatable port location and performance. The 185cc intake ports and 64cc combustion chambers, combined with 1.900" intake valves and 1.600" exhaust valves, are compatible with OEM piston valve reliefs. This includes PAC Racing valve springs, ARP 3/8" rocker studs, Viton valve seals, AFR adjustable guide plates, machined bead valve locks, hardened spring cups, and ductile iron seats. The 8mm stainless steel valves are designed for standard use with non Hi-Rev camshafts, and the heads feature 1/2" head bolt holes with included 7/16" bushing adapters for stock 5.0L blocks. Maximum airflow is rated at 251 CFM at 0.60" lift for the intake ports.