Keyway Adjustable Billet Timing Set for Chevrolet 396-454 Big Block
Induction hardened and precision machined steel billet gears for bullet proof durability
Feature 9 keyway crank sprocket for 2-degree incremental adjustability, 8-degree maximum advance/retard
Pre-stretched, heat-treated double roller timing chain with heavy-duty large pin design
Includes Torrington roller thrust bearing for reduced friction
Ideal for all performance and race applications