LSX block question

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Mar 16, 2012 | 11:29 PM

Corvee

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From: Houston, TX

LSX block question

Anyone know the weight difference between a stock LS7 block and an LSX block? Looking for accurate numbers here not WAG's.

Thanks,

Mar 17, 2012 | 05:39 AM

Jontall

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Do you really want a LSX block with its core shift problems? It's just going to cause you problems unless you can get a good one. The only way to get a good one is to have it sonic tested before it's shipped to you which is almost impossible.

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LSX block question-lsxblockcoreshift.jpg

Mar 17, 2012 | 06:44 AM

87silverbullet

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So you have to show that pic^^^? Thats not even a core shift problem. That was at a show showing off the bore sizes of an LSX block.

Mar 17, 2012 | 06:34 PM

Capricio

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Hmmn, just wondering, in descending order... is it 502, 454, 427, and 372 (crate displacement)? Those seem to be the displacements I see most often. I know the 427 is 4.125"x4" but not sure about the rest. What does GMPP say is the recommended max bore? Anyways, kind of a cool display.

Mar 17, 2012 | 07:17 PM

bww3588

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You can't see the tremendous difference in the cylinder wall thickness between #2 and #8 87silver?

Mar 17, 2012 | 07:17 PM

bww3588

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Scratch that. Sorry. I understand what it is now.

Mar 18, 2012 | 12:02 PM

87silverbullet

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Quote:

Originally Posted by bww3588

You can't see the tremendous difference in the cylinder wall thickness between #2 and #8 87silver?

Quote:

Originally Posted by bww3588

Scratch that. Sorry. I understand what it is now.

Yeah, you remember now. A guy posted the same pic in a thread awhile back and I think you also chimed in about that was a pic at a performance show to show how much bore can be had from an LSX block and that its not a core shift picture.

OP, I'm not going to say that the LSX block doesn't have any issues but if it does its not going to be like that one in the pic. Erik@HKE and Kurt Urban have seen a few LSX blocks with issues but I think it was the earlier ones. You would want to PM them to see if they can can give you any info.

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