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The COMP Cams 306LHR camshaft listing warns that 1955–57 small-block Chevy models requiring a rear journal oiling groove are not compatible with the shown part numbers; contact us if you need that groove. The cam is intended for Super Stock 350 automatic applications with matching component specs. It’s a performance-oriented choice for specific vintage SBC setups.
COMP Cams Camshaft CS 306LHR-7
