Billet steel crankshafts offer maximum performance durability and are available in strokes up to 4.500-inch. Main journal diameter is standard FE 2.79-inch and rod journals are 2.200-inches. In addition, steel crankshaft damper spacers are available for billet or factory FE cranks. For street use, a 427 style crank damper uses a steel hub bonded to a steel inertia ring. In race applications, a SFI approved small dia unit is offered. Timing marks are etched for accuracy.