Thinking of swapping in a 351
Hey guys. I'm new to the GMC crowd. Bought a '66 (with 65 letters in the grille) from a friend that came with a 250 straight six.. It runs great.. Found out it's a rebuilt engine from a 74 GMC truck.. probably 18,000 miles now? Anyway, I'm thinking of buying a 351 with manual bell housing that's in good running condition.. What else would I need to do the conversion? My truck has a 3 on the tree and I'd like to keep it that way. I just tightened up the shifter linkage and it works like butter now.. Do I need new perches for the engine? Anything different about the shift mountings?
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