5.3 block

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Oct 26, 2009 | 10:48 PM

kenracer

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5.3 block

How large can you bore a 5.3 steel block and live?

Oct 27, 2009 | 01:10 AM

00MaroonZ28

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From: Brooklyn Center, MN

it's iron not steel, and it's not worth it when you can get a 6.0 liter block cheaper than it would cost to bore the 5.3 block

Oct 27, 2009 | 08:50 AM

5.3LJimmy

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From: Napoleonville, LA

It can be bored safely to 3.898-3.905(the same bore as an LS1 or 347 respectively). I've heard of people taking them further but I wouldn't recommend it.

Oct 27, 2009 | 11:53 AM

Johnnystock

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Get an LQ9, LQ4..6.0l is better.

Oct 27, 2009 | 11:59 AM

BlownChevySS

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From: SOFLO

I think the highest you can go with the lq9/4 block is 408 or maybe to 413 right?

Oct 27, 2009 | 02:20 PM

KCS

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From: Conroe, TX

Quote:

Originally Posted by BlownChevySS

I think the highest you can go with the lq9/4 block is 408 or maybe to 413 right?

You can go higher displacement with an iron 6.0L, like 427ci, but bore wise ~4.060" is generally thought to be the limit.

Oct 27, 2009 | 02:35 PM

BlownChevySS

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From: SOFLO

Quote:

Originally Posted by KCS

You can go higher displacement with an iron 6.0L, like 427ci, but bore wise ~4.060" is generally thought to be the limit.

I was just talking about with the bore, not stroke, pistons, and deck clearances. But thanks for the insight.

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Oct 27, 2009 | 03:22 PM

BlownChevySS

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From: SOFLO

Quote:

Originally Posted by KCS

Huh?

408ci and 413ci are both with stroke though, same as 427ci. 370-375ci are with bore only though. All of that has to do with pistons.

Sorry. I was horribly misinformed then.

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5.3 block

5.3 block

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