COMP Cams 3149KT Adjustable Double Roller Timing Set for 454-502 Big Block Chevrolet GEN VI

Featuring a pre-stretched, heat-treated, double roller chain, billet gears, an infinitely adjustable cam gear and 3 key crank gear, this adjustable timing set for Chevrolet 454-502 GEN VI Big Block is ideal for street and race applications.