Generation IV External Engine - Max bore
05-01-2012, 07:05 PM
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.....:usa:
05-02-2012, 07:42 PM
No one? Of all the info that hits this site.......:confused:
05-02-2012, 08:00 PM
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?
05-02-2012, 11:14 PM
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
05-11-2012, 08:44 AM
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:
05-12-2012, 04:24 AM
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.
05-12-2012, 10:46 AM
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????:usa:
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