Generation III Internal Engine 1997-2006 LS1 | LS6
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5.3 to 6.0

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Old 09-05-2008, 06:30 PM
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Default 5.3 to 6.0

Has anyone overbored a 5.3 to a 4 inch bore. I have used search and found they can be bored out to 3.90 bore. Which makes a 346. In one post it was stated that a 5.3 was sonic check and it can handle a 4 inch bore size.

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Old 09-05-2008, 07:32 PM
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i have heard of 3.905 but not sure on the 4.0
Old 09-05-2008, 09:52 PM
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382, 3.90
Old 09-06-2008, 03:43 PM
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Has anyone ever sonic checked the block.




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