COMP Cams Camshaft CS Nx284H-13Fits '58 '02 262 400 c. i. d. Chevy Small BlocksPro Street Applications Excellent for multi stage nitrous or 671 blower 2800+ stallXtreme Energy Cams are designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and enhances throttle response. Special intake closing ramps close the valve sooner, providing more cylinder pressure and torque without