These started out as a stock rocker arms. The seats have been welded in and remachined at a new location to achieve a ratio of 1.9 (vs. the stock 1.6). There are thousands of this style of rocker arm in the 3800 market, all with excellent results.

These work with all stock or aftermarket pushrods, lifters, springs, retainers. They will not work with aftermarket cams. Aftermarket springs are recommended for shift points higher than 6000.

Kit includes 12 rocker arms and 2 modified pedistals. If you need new valve cover gaskets or rocker bolts, please order separately.

A good article on how high ratio rockers affect your engine.