Edelbrock part #7816 Performer-Link timing chain set is for use with 1996-Later Big-Block Chevy Gen VI 454 & 502 V8 engines. They have a solid-bushing chain for a true bearing surface that rolls with the sprockets, eliminating chain stretch. Cam sprockets are made from 35,000 psi tensile strength cast iron. Crank sprockets are made from SAE 1144 billet steel and induction heat treated. The crank sprocket has three keyway setting points to ensure accurate timing selection. Performer-Link timing sets are not for use above 6500 rpm.