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Generation III Internal Engine 1997-2006 LS1 | LS6
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boring 5.3 block

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Old 03-05-2003, 06:44 PM
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Default boring 5.3 block
can a 5.3 block be bored to a 3.90 bore and acept everything from an ls1 motor?
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Old 03-06-2003, 07:58 AM
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Default Re: boring 5.3 block
YES & YES
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Old 03-06-2003, 08:09 AM
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Default Re: boring 5.3 block
Is 3.90 the largest it can be bored? What is the limit for a NA motor?
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Old 03-06-2003, 08:23 AM
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Default Re: boring 5.3 block
3.910 is the largest bore, with a 4.125 stroke will be a 396.
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Old 03-06-2003, 04:17 PM
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Default Re: boring 5.3 block
ok so what is the STOCK bore on a 5.7 alum. block
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Old 03-06-2003, 04:22 PM
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Default Re: boring 5.3 block
I believe it's 3.895 or 3.90
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Old 03-07-2003, 09:40 PM
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Default Re: boring 5.3 block
3.988-3.989 is the stock ls1 bore.
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Old 05-24-2003, 09:21 AM
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Default Re: boring 5.3 block
i believe the stock bore is 3.89
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