Inliners International Forums General Discussion Engines 235/261 crankshaft casting numbers

Hi RacerRoy3 . . . the '57 Chevrolet Parts Master indicates that all '54 to '57 six cylinder engines used the same crank - master index 0.646:

The Old Car Manual Project '57 Parts Master

This makes sense because the only dimensional difference between a 235 and 261 is the bore. The increase in a bore is evidenced by the difference in part numbers between 235 and 261 blocks (again from the same Parts Master reference) master index 0.033:

Old Car Manuals Project - '57 Chevrolet Parts Master

regards,
stock49