The cams should be different also. The magnum having a hyd roller and the pre
mag having a hyd tappet.
In a message dated 1/4/00 4:58:20 PM Eastern Standard Time, kmiller@cvn.net
writes:
> try about 50 hp and one of the most talked about differeces is the heads.
> The magnum engines have a "swirl port" design head that flows a lot better
> than the older style.
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