Smart engine builders understand the benefits of a 4&7firing order swap camshaft, which exchanges the 4 and 7 camshaftlobe timing in small and big block Chevrolet engines. While somebuilders have realized significant horsepower gains, all of themexperience the exceptionally smooth torque curve possible withthis new firing order technology.

Dyno, Spintron and track-tested, the Xtreme Energy™ 4&7Solid Lifter Camshafts do not require any engine block, ignitionor valve train modifications and can be custom ground to theengine builder's exact specifications. Regardless of the camspecs you require, these camshafts are engineered to achieve themaximum power possible using advanced lobe designs.