a 340 is not crap joe. a bigger bore is better, but a 340 and a 360 can both be bored out the same, 4.060" or whatever. all 340s had floating pins, 360s not , etc. A 1969 340 had a steel crank and was internally balanced. all 360s had cast iron cranks and externally balanced-not ahead of the 340 game joey etc.
