ProMaxx Performance 9319: 317 Series Aluminum Cylinder Heads Big Block Chevy
317 Series Aluminum Cylinder Heads
317 Series Aluminum Cylinder Heads Big Block Chevy As-Cast 317cc Intake Ports 119cc Combustion Chamber 2.25'' Intake / 1.88'' Exhaust Valves 7/16'' Rocker Arm Studs .700'' Max Lift Steel Retainers Assembled, 2/pkg