Description MATERIAL 355-T6 High Density Aluminum APPLICATION LS3 Block Chevy ASSEMBLED OR BARE Bare INTAKE RUNNER 255cc CHAMBER VOLUME 72cc CHAMBER VOLUMES INTAKE VALVE DIAMETER 2.165″ EXHAUST VALVE DIAMETER 1.590″ VALVE STEM DIAMETER 8mm SPRING SEAT DIA 1.560″ VALVE GUIDE OD .500″ SPARK PLUG TYPE 18mm SOLD AS Individually
