AIR FLOW RESEARCH
BBC 345cc Alum Heads Magnum 121cc Assembled
BBC 345cc Alum Heads Magnum 121cc Assembled Cylinder Head - Magnum Comp - Assembled - 2.300 / 1.880 in Valves - 345 cc Intake - 121 cc Chamber - 1.625 in Springs - Aluminum - Big Block Chevy - Pair