Re: 307 Chevy motor
307 uses the 327 crank with a 3.25 stroke
307 has a 3.875 bore
350 has a 4.00 bore is
230 has same stroke and bore as 307, so pistons should fit-check part numbers
250 bore is 3.915 not 4.00
you could bore out the 307 to 4.00 but need thick cylinder walls (different 307's have diiferent thickness) so you need a sonic check
Last edited by ho70; 01-07-2014 at 10:58 AM.
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