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

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

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