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Generation III Internal Engine 1997-2006 LS1 | LS6
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max bore on 5.3?

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Old Jul 18, 2009 | 02:41 AM
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Default max bore on 5.3?
Like title says just curious what max bore on a 5.3 is.
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Old Jul 18, 2009 | 07:10 PM
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Nobody knows?
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Old Jul 18, 2009 | 09:03 PM
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some can go 3.905 some cant the block has to be sonic tested...you can do the 3.89 safely though.....wiseco makes forged pistons for the 5.3 now...just an fyi....hope that helped...
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Old Jul 18, 2009 | 11:52 PM
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Thanks for the info. This is why I like LS1tech.
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Old Jul 19, 2009 | 09:06 AM
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Done several to 3.900-3.905.
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