Super Aluminum Rockers have a beautiful anodized finish, extremely tolerances, and upgraded cage bearings. Fits S/B aluminum cylinder heads, pedestal mount '77-'94, 302HO and 351W hydraulic and cams. Rid your engine of internal friction with -tipped rocker arms. The race- full needle bearing, fulcrum, and tip not only unleash , they also lengthen valve train component life and reduce wear and tear on valve stem tips. machined to insure consistency and ratio accuracy.