Have the block bores sonic tested for thickness. Then you'll know if .060" overbore is going to hold up. If a little too thin you could add epoxy to the bottom of the big freeze plugs on the side of the block to help stabilize the bottom end. This will also add longevity to the rebuild. This has NO effect on coolant temps. In comparison to the cost of a rebuild it's cheap insurance. Normally in the $75.00-$125.00 range. With thinner cylinder walls the old adage of overheating is a myth. Thinner walls pass/transfer heat faster to the cooling system. Sorry to dis-agree Doc.
Tom Telesco
Classic and Muscle Automotive
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Norwalk, CT 06853-1601
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