AFR Eliminator Race Cylinder Head - Assembled - 2.100 / 1.600 in Valves - 227 cc Intake - 65 cc Chamber - 1.55 in Springs - Angle Plug - Pair NG21 1965-1972 Pontiac Laurentian

1965-1972 Pontiac Laurentian

375 in OD x 3

***If replacing the old style socket clip on cap

2009-2011 GMC Yukon

AFR Eliminator Race Cylinder Head - Assembled - 2.100 / 1.600 in Valves - 227 cc Intake - 65 cc Chamber - 1.55 in Springs - Angle Plug - Pair NG21 1965-1972 Pontiac LaurentianAFR 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). Standard valves are