C5 - Competition Assembly

This complete Competition cylinder head package comes with CHI Custom made by REV (USA) swirl polished stainless steel valves with hard chromed stems. We use Manley 10 Degree Titanium Retainers, Machined Valve Locks (not the cheaper stamped steel versions), and Manley Nextek Competition valve springs.

This package is ideal for race solid roller cams of up to .850” lift (be sure to subtract valve lash from your camshaft specs when determining net valve lift), that are raced on a regular basis. Heads are finished of with matching hardened spring pad locators to positively locate the valve spring and Viton valve stem seals for unsurpassed oil control.


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