COMP Cams 1242-16 High Energy Steel Rocker Arm with Pedestal Mount for Oldsmobile V8 Excellent replacement rocker arms for engine rebuilds with a stock or High Energy camshaft Help to eliminate noise and slop associated with worn or high mileage stock rocker arms Features a long slot for higher than stock lift camshafts For Oldsmobile V8 applications 1.6 inches ratio