COMP Cams 3149KT Adjustable Timing Set GM Gen VI w/Thrust Bearing

Adjustable Double Roller Timing Set for 454-502 Big Block Chevrolet GEN VI Include induction hardened Steel billet Gears for bullet proof durability. Feature infinitely adjustable Camshaft sprocket, 6-degree maximum advance/retard.3 keyway crank sprocket for additional 4-degree incremental adjustability. Pre-stretched, heat-treated single row chain with heavy-duty large pin design