Magnum Double Row Timing Set for '65-'91 396-454 Chevrolet Big Block

• Feature induction hardened cast iron camshaft gear and billet steel crank sprocket

• 3 keyway crank sprocket for 4-degree incremental adjustability, 4-degree maximum advance/retard

• Heavy-duty, heat-treated double row timing chain; comes complete with gears and chain

• Ideal for mild street performance applications