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4.00" bore on a 5.3L

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Old Sep 23, 2007 | 12:51 AM
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Default 4.00" bore on a 5.3L

I did a search and didn't find what I was looking for:

So I've been reading about making a 5.3L into a 5.7L, that's nice, but can I take it a step further and go out to a 4.00" bore (to run L92 heads)
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Old Sep 23, 2007 | 01:19 AM
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not sure but i think 3.905 is pushing it i am going 3.903 with a 4.125 stroke
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Old Sep 23, 2007 | 03:26 AM
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Max bore on a 4.8/5.3 block is 3.903" or 3.905"....
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Old Sep 23, 2007 | 12:46 PM
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Originally Posted by Ackattack1
I did a search and didn't find what I was looking for:

So I've been reading about making a 5.3L into a 5.7L, that's nice, but can I take it a step further and go out to a 4.00" bore (to run L92 heads)
Nope, not enough wall thickness for safe and consistent operation
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Old Sep 24, 2007 | 09:22 AM
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thanks guys, that's kinda what I thought
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Old Sep 24, 2007 | 09:25 AM
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Originally Posted by Ackattack1
thanks guys, that's kinda what I thought
Just find a 6.0 Short block in good shap and start with that, they can be had for dirt cheap...
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