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5.3 and bore size

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Old 10-24-2002, 08:48 AM
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Default 5.3 and bore size

Can a 5.3 be bored out to 4.000"? Planning my next build up and I don't want to buy a new block if I don't have to. thanks
Old 10-24-2002, 08:55 AM
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Default Re: 5.3 and bore size

The most I have seen is .120 over that would bring it up to a 5.7L or bore would be 3.899 = 99.05mm. Stroke is 96.12mm = 3.78.

Greg
Old 10-24-2002, 09:29 AM
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Default Re: 5.3 and bore size

Stock bore is 96.01mm and stroke is 92mm. The stroke is the same for the 5.3, 5.7, and 6.0 motors.
Old 10-24-2002, 01:52 PM
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Default Re: 5.3 and bore size

like greg said the biggist ive heard of was making it the same size as a 5.7 and i was told that was stretching it
Old 10-24-2002, 03:15 PM
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Default Re: 5.3 and bore size

Are the 5.3 and 6.0 completely different castings? Does the 5.3 have sleeves or water passages that limit bore size? I just want 4.000" bore and would like to use what I already have. If not I guess I have a spare for the wife's Tahoe.
Old 10-24-2002, 04:03 PM
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Default Re: 5.3 and bore size

people in the car section are using the iron 6.0 blocks like crazy now, it seems to be the new hot ticket, a 5.3 seems to be worth prety much nothing, that right there tells me you can't bore it to 4.00.

get a 6.0 and bore it to 4.040, thats what alot of people are doing now, along with a 4" stroker crank or bigger <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> makes for a bullit proof moter that can take alot of abuse.
Old 10-25-2002, 07:14 AM
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Default Re: 5.3 and bore size

Thanks for the responses. 6.0L here I come.
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