If we "normalize" the 3.25" & 3" Main crankshafts as both stronger than the Factory Blocks then:
We cannot ignore the plentiful Factory 3.25" Block Main fractures.
Soooo, seems to me the Factory 3" main blocks are holding up. Or....are they?
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I don't draw a decision on the Main diameter for Aftermarket cranks in aftermarket Blocks.
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