COMP Cams Camshaft CS Nx256H-13Fits '58 '02 262 400 c. i. d. Chevy Small BlocksWorks well in near stock engines with up to 125 HP nitrous kitsXtreme 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 resulting in