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COMP Cams Magnum double-row timing set for 1969–1981 AMC 290–401 engines uses an induction-hardened cast iron cam gear and a billet crank sprocket with a heavy-duty heat-treated double-row chain. The three-keyway crank sprocket allows incremental timing changes within a 4° advance/retard range, and the complete kit ships with gears and chain suited to mild street performance builds.
COMP Cams Magnum Roller Timing Set AMC
