Hi-Tech Roller Race Timing Set for .005" Undersized Chevrolet 396-454 Big Block

Cast Iron Camshaft Gear and induction hardened billet Steel crank sprocket. Feature 3 keyway crank sprocket for 4-degree incremental adjustability, 4-degree maximum advance/retard. Pre-stretched, heat-treated double Roller chain with heavy-duty large pin design; chain available separately. Dynamically balanced and quality checked for run-out tolerances. Ideal for all street performance and race applications.