Quote:
Originally Posted by hawthorne90250
Hi
If i install a 1980 cam on my 1979 300D N/A will it increase the HP?.
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The early cams were "soft cast" and were matched to soft rockers. If your rockers do not have the hard steel pads on them where they ride on the cam you have the old design cam. To upgrade that you will need to buy the revised cam, a complete set of hardened rockers, and the upgraded cam towers (casting was changed to be stronger for the increased lift and bearing holes are larger to fit the redesigned cam). All are drop in fit to the older engines.