Edelbrock Hex-A-Just True Roller Timing Set By Cloves for 1997 and Up Chevy LS1 LS2 and Ls6Edelbrock part #7343 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 ?