This COMP Cams High Energyâ„¢ Steel Rocker Arm with a pedestal mount and 1.73 ratio is designed for 1968-86 Ford V8 429-460 applications. Engineered to help eliminate the noise and slop associated with older worn and high mileage stock Rocker arms, High Energyâ„¢ Rockers feature a long slot for higher than stock lift Camshafts, these Rocker arms are an excellent replacement choice for engine rebuilds using either stock or High Energy Camshaftsâ„¢.Cost effective aluminum construction provides superior strength to weight ratioNeedle bearing fulcrum and Roller tip reduce friction and lower oil temperatures for improved response and horsepowerDurable design increases valve lift while withstanding the rigors of moderate Race useAffordable Rocker arms for AMC, Chevy, Ford and Oldsmobile street and mild race engines