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The COMP Cams CS 47S 312R-7 camshaft is a small‑block Chevy oriented cam in the CS 47S series intended for racing and high‑output SBC builds. It provides cam timing and lift suited to competitive late‑model setups. Important fitment note: 1955–57 SBC engines with an oiling groove in the rear journal will not accept the listed part numbers; contact us for the correct grooved cam option.
COMP Cams Camshaft CS 47S 312R-7
