Cracked blocks are never fun. I had a 327 for a '65 Corvette sleeved. A rare 4 bolt main 396 from a '67 Chevelle was beyond repair and required replacment. You win some and lose some. If they find other problems with the block, replacement 100-6 blocks aren't that hard to find.
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smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 