oldngray

iTrader: (9)

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.....

oldngray

iTrader: (9)

No one? Of all the info that hits this site.......

Gregory

iTrader: (4)

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?

oldngray

iTrader: (9)

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

birdman891

iTrader: (2)

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

LS1MCSS

iTrader: (18)

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.

oldngray

iTrader: (9)

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????