Max bore GM Bowtie tall deck

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02-09-2003 | 04:32 AM
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Have any of you bored a Bowtie block larger than 4.560 and is it safe ?

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02-09-2003 | 09:57 AM
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bobby daniels
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4.600 ALOT,,,,,, BIGGER THAN THAT I'D SONIC CHECK EVEN AT 4.600 JUST TO BE SAFE NEVER HAD A PROBLEM
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02-09-2003 | 07:57 PM
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Cigarette
I am at 4.565 to save a few bore sizes. You don't have to go all the way to 4.600 at one time.
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02-10-2003 | 11:46 PM
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I bored mine 30 thousands and stroked it 4 5/8" for a displacement of 604ci. Made 755hp at 5100rpms. For sale $13000. Dyno time only.
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