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bore & sleeving a 390 to make a 427 bore & sleeving a 390 to make a 427
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Old 02-20-2005, 05:50 AM
jschiller's Avatar
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I have the feeling that boring a 390 to put in a big enough sleeve would not leave anything for the sleeve to bear against in the block. Remember the sleeve itself is about .25" thick so its got to be a big hole in the block to take it. It would be supported at the top of the block but probably not at the bottom. Thats why the hardblock was needed.

John
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