CH> Sean, the 460 really isn't all that heavy.  I would guess about 625
 CH> tad over 500 pounds, and the 289/302 Ford less than that. Your 351M
 CH> is probably about 575, give or take.
Wow.... so if I were to swap a 460 in, I probably wouldn't even need to do 
suspension work, would I?
 CH> But shipping across country still puts it into the "why bother"
 CH> category.  You should be able to find a mid-70's 460 locally for
True.  I was being slightly sarcastic though. ;)
 CH> too.  The 351M and 460 have the same bellhousing bolt pattern, so the
 CH> transmissions bolt up.
That I do know.. 351M/400/429/460 all had the same, though the 460 uses the 
same block as a 429 doesn't it?  (I know the 351M and 400 share the same 
everything except rods and crank)
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