Agreed - to a point. I'm not for spending on custom pistons to save .010 of bore size. But's me. I wouldn't blow anything out to max thinking it's going to give some result - because it really doesn't.
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Was not planning to bore for max. I was trying to get some opinions on what was a safe minimum for wall thickness.
The shop that tested my block said it could go 080.
After some of the replys I don't know if it would go .030.
top to bottom
#5 is fr .142, .152, .141 valley side .226, 227, 251
rear .128,143,159 outside .163.168.184
#6 is close to the same measurements