A small block chevy 350 is the easiest thing to lay your hands on and the cheapest to get modified parts for, like heads, cams, pistons, lifters, etc...
If you go that route and have a choice of used ones that run, go with the four bolt main in case you get the urge to seriously build it in the future.
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
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