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Old May 1, 2012 | 07:05 PM
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Default Max bore
Got a line on an LH6, what would the maximum bore be on that block?? Tried a search came up with nothing, called a couple of LS oriented machine shops and got conflicting answers, if you have had an experience with this, good or bad, would appreciate the answers.....
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Old May 2, 2012 | 07:42 PM
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No one? Of all the info that hits this site.......
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Old May 2, 2012 | 08:00 PM
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I think people are looking for more information.
What is the current bore, stroke, liter, year, block material, etc.?

Do you mean LS6 instead of LH6?
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Old May 2, 2012 | 11:14 PM
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Its is a stock LH6, 05 year model, 5.3. Stroke has nothing to do with boring a block. The block is aluminum, not an iron block, if it was iron there would be no problem
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Old May 11, 2012 | 08:44 AM
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The LH6 is the 5.3l aluminum block, iron sleeved version of the Gen III LM4 I believe. I think more information on it is best found in some of the Trailblazer/Envoy/Rainier forums. However, this link may help:

https://ls1tech.com/forums/conversio...91-s-10-a.html
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Old May 12, 2012 | 04:24 AM
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I think you can bore the LH6 all the way to a 5.7 liter. The sleeves are thicker than they are on LS1's and 6's.
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Old May 12, 2012 | 10:46 AM
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Thanks for the replys, will keep that on hold as I just found a L33, will pick it up soon, but may be a while before I tear it down , still have to finish the LS2 in the 65 Abody, so many engines, not enough time. May want to sell all my early hemi engines????
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