Inliners International Forums General Discussion Engines 230 pistons in a 250???

The distance you are showing there includes the crevasse volume of the piston so is misleading. The difference in stroke length is .280 so the crankpin offset is .140 difference; you see that reflected in the two pin heights 1.795 for the 230 vs. 1.655 for the 250.You will find more than the +/-.007 tolerance in the deck height dimension in most blocks also, which adds to the problem.