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Old 06-17-2003, 07:27 PM   #1
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Default How far can you bore/stroke a 5.3 Liter Iron Block

My buddy bought a 5.3 Liter Iron Block with Aluminum heads and is wondering what the max bore could be on this motor, and how much it can be stroked. Does anyone here know?

Thanks!
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Old 06-17-2003, 07:34 PM   #2
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

Hey Mike

The bore of the 5.3L block can be taken out to 5.7L specs of ~3.9"

I really don't know what the biggest stroke is that can be installed without clearancing the block but, it will accept any crank that you can put in an LS1.

John

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Old 06-18-2003, 01:01 AM   #3
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

I would think you could take it out to the 6.0 bore even. I think it's around 4.0. I don't have a clue about the crank. You may want to call Lunati or something about that.

Let us know though, cause I'm kinda interested myself.
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Old 06-18-2003, 03:22 AM   #4
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

No way you can go 4" without risking the big uh-oh. I would not be worth it anyway. You could pick up a new 6.0 block for the price it would be to bore. And it would be safer.
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Old 06-18-2003, 05:16 AM   #5
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

Quote:
Hey Mike

The bore of the 5.3L block can be taken out to 5.7L specs of ~3.9"

I really don't know what the biggest stroke is that can be installed without clearancing the block but, it will accept any crank that you can put in an LS1.

John

PS - Congrats on the moderator position.
Thanks, Bro, for the congrats AND the info.
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Old 06-18-2003, 05:17 AM   #6
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

Thanks for the info, guys.

Anyone else know more or has done this?
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Old 06-18-2003, 02:09 PM   #7
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

Hey Mike

Get in touch with Reckless turbows6@hotmail.com . He use to have a 5.3L block bored out to 5.7L. I don't know if he has it anymore but, he probably has some solid info about the 5.3L block.
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Old 06-18-2003, 03:30 PM   #8
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

Cool! Thanks again, man...
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Old 06-18-2003, 03:53 PM   #9
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Default Re: How far can you bore/stroke a 5.3 Liter Iron Block

ARE is the only firm I know that bored out the 5.3's a lot.

Reckless and NoOne both had 3.900 bore 5.3 setups.

Check with ARE guys like Wade or Barry.
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Old 06-18-2003, 03:53 PM
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