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I talked to indy on the phone they gave me some very off the wall numbers that I don't even want to print,all they wanted to do was sell me some parts I was told (last night) 4.530 was the max on the small sleeve block.my question is how much is left at this bore?
Thanks,Bruce

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I would never go past 4.505 on the thin sleeve,you will be less than .070.You can have the block bored to accept thicker sleeves.Depending on your application,try and achieve a "happy medium" and not take too much out of the block as cracking can occurr.