AFR 180cc SBC Eliminator Street Cylinder Head

The AFR Emissions Legal (versions from 1969-94 with heat riser, CARB EO #D-250-2), 180cc intake port small block Chevy cylinder heads are available in your choice of straight or L98 angle plug versions. These heads feature a 75cc or 65cc combustion chamber with a 64cc exhaust port and a 3/4” thick head deck (ideal for nitrous or blower applications.) Standard valves are lightweight 8mm 2.020 intake and 1.600 exhaust with AFR’s hardened ductile iron interlocking valve seats. The exceptional flow characteristics, ideal operating range of idle to 5500 rpm (higher rpm ranges possible depending on combination of parts), 23º valve angle, and standard valve spacing make this the perfect street aluminum cylinder head for 327 cid to 350 cid engines from 1955-86. Also available for 1987 to present engines with center bolt valve covers and 2 center intake bolts at 72º angle, AFR Part #0919 and #1041. No special parts are required (see footnotes here). Vortec style cylinder heads available too. Dual valve cover bolt pattern is standard. Exhaust port is raised .100 over GM L98 cylinder heads.

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180cc SBC Street Aluminum Cylinder Head Flow Chart

180cc SBC Competition Package Cylinder Head Flow Chart

AC FR3LS or 41629