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The COMP Cams CS 281Jfa S7 modified cam is optimized for 1/3–1/2 mile tracks with tight corners or heavy surfaces. Intended for 327–358ci engines with about 11:1 compression running 2–4 BBL gas or alcohol, it requires premium valve springs, lifters and pushrods for reliable operation. Standard listings note incompatibility with 1955–57 SBCs that have a rear‑journal oiling groove.
COMP Cams Camshaft CS 281Jfa S7 Modifie
