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Howdy, Pals. In my spares I have a front (ET47/1AS) cam that has a "5" stamped at the inboard end of the cam. I am also mindful that some are marked on the timing cover side of the cam. Others that I have seen may be marked with a "1,2, or 3." I know what those numbers mean, and then some cams have no marking at all. But, what about this "5?" Anybody know the scoop on those?