Comp Cams "451 0.491"" Shaft Diameter Bronze Distributor Gear for Pontiac V8"
Stock cast iron distributor gears are not compatible with steel camshafts. COMP Cams Bronze Distributor Gears are the first requirement when installing a steel roller cam. They are made from AMPCO-45 extruded aluminum bronze with 5 percent nickel added. They feature a high strength tooth design that resists wear even when used with high pressure oil pumps.