COMP Cams 3110CPG Hi-Tech Roller Race Timing Set for Chevrolet 396-454 Big Block

Hi-Tech Roller Race Timing Set for 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