Re: Swapping out a 305 for 351 or 401?
305 and 351 are the same block I just swapped mine from 305, problem is there is no head gaskets for the 351 or rings or pistons,and if it's the magnum or 351E you will have make your own intake and exhaust gaskets and have a carb adapter made to fit the trapizod base , parts will have to be custom made or get lucky on Ebay, I would start with a know great running engine and cleanup and drop in!
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