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max bore on 5.3

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Old 02-08-2017, 09:43 PM   #1
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Default max bore on 5.3

5.3 bored 3.898 is a standard bore ls1

how far can you take a 5.3 can you go 3.903 safely

has anyone pushed these limits?
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Old 02-09-2017, 08:46 PM   #2
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You're only talking .005....I'm pretty sure you're safe.....A good hone could get you that.

But, as always, sonic check will tell you all you need to know.
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Old 02-09-2017, 09:06 PM   #3
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I've personally done 3.905 on Josh Townsends car.
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Old 02-10-2017, 07:20 AM   #4
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3.90x is common as hell.

But the early 4.8/5.3s have gone to 4". Pretty crazy, but sonic testing is needed for sure that far out. Supposedly 4 out of 5 will go 4".
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Old 02-10-2017, 08:38 AM   #5
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any certain year model block is better than the other to do so?
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Old 02-10-2017, 01:12 PM   #6
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Hear say was the older 99-2005 blocks were liking 4" bore, but I don't have any confirmation.
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