COMP Cams 7813-1 High Energy 3/8" Diameter 7.725" Length Intake Pushrod for Chevy Big Block Engine with Retro-Fit Hydraulic Roller Cam 3/8 inch diameter; 7.725 inch length High Energy Intake Pushrod for Big Block Chevy Best choice when building street rods, RVs or daily drivers Meet or exceed all OE pushrod specifications Mate perfectly with High Energy and Magnum Rockers