Completely New Design Now Available! These new Super Street Aluminum Roller Rockers have a beautiful anodized finish, extremely tight tolerances, and upgraded cage bearings. This unique combination of roller rockers in one package consists of 8 1.6 ratio rockers, and 8 1.7 ratio rockers. Fits Ford S/B aluminum cylinder heads, pedestal mount '77-'94, 302HO and 351W hydraulic and roller cams. Rid your engine of internal friction with roller-tipped rocker arms. The race-proven full needle bearing, fulcrum and roller tip not only unleash horsepower, they also lengthen valve train component life and reduce wear and tear on valve stem tips. Precision machined to insure consistency and ratio accuracy.