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BY REFERENCE CATCAMS - Reinforced Valve Springs

BY REFERENCE CATCAMS - Reinforced Valve Springs 

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BY REFERENCE CATCAMS - Reinforced Valve Springs
A faster camshaft with more lift overwhelms the standard spring: the valve floats, bounces on its seat and the cylinder head destroys itself in seconds. Catcams springs, made by PAC, are rated to follow those ramps. Twenty-five part numbers are active, and this is the only page in this section where the entire range is in stock. The code reads easily: the PAC prefix is followed by a letter giving the type, D for a double spring, S for a single, E for the outer and I for the inner of a double set, then a number. Always check coil bind clearance at full lift before signing off a build.