Edelbrock Timing Chain GM V8 LS3 Aftermarket Three Bolt CamsEdelbrock part #7338 RPM Link adjustable true roller timing chain Set now, you can dial in your camshaft with ease with our RPM Link Roller Timing Chain Set. RPM Link timing chain bolt onto your engine just like any other timing chain set, so there's no machining required and no need for special offset bushings for installation. Made from induction hardened billet steel, it allows for a quick cam timing adjustment to plus or minus six degrees ?