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 street performance and race applications