GXC-420-00 Billet Steel Ratio Rockers

1.3:1 GX200/Clone/Predator Non Hemi Billet Steel Rocker Set
Replaces the stock rockers with 1.3:1 ratio billet steel rocker arms, heavy duty billet steel rocker studs, lash caps, rocker pivots, adjuster nuts, set screws and a billet steel guide plate.  The Standard rocker ratio is 1.05:1 so these add considerable lift at the valve without changing the cam.  Further recommended valve-train upgrades would be Chomoly pushrods, DJ-1047 retainers, DJ-1056 springs and Stainless Steel valves. Works very well with a Mod2 or CM grind cam. 

To use stock-length pushrods, you must mill down the rocker-stud bosses in the cylinder head per the instructions, otherwise, extended-length pushrods must be used with these rockers.

***Will not work in Hemi head***