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LQ4 Rebuild or Replace?

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Old Apr 16, 2012 | 03:12 PM
  #1  
iLLuZioN's Avatar
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Default LQ4 Rebuild or Replace?

I was looking into getting an 02-07 classic Yukon Denali.

Most of my searching has led me to high mileage ones, 100k-140k range which is more than I would like. I know it would be hard to find something less on something that old down here in the lower 48. I like the style of these better than the newer ones, but want something reliable for the long run. As much as I want to make it faster, I'm looking to be more practical. I know it depends on the condition of the current parts, but generally speaking, would I be better off REPLACING the engine and transmission with something new or low mileage, or just rebuilding it all?

Things to consider:
- I will not be looking for extra power/speed, unless of course the cost is the same as getting a stock part
- I will NOT be doing ANY of the labor. I don't know enough and quite frankly don't want to mess anything up haha
- I don't really want to piece together a whole setup, rather just make simple and easy purchases so that I don't have to worry about forgetting to buy a certain part
- Looking for LONG TERM, daily reliability

Some other questions:
- On average, what mileage do these things usually need to be replaced or rebuilt?
- What parts are essential to be examined for replacement/rebuild; what's first to break?
- Any recommendations for parts purchases besides junkyards/craigslist?
- Any recommendations for shops to do the work in the South Bay or Sacramento area? (I live in the bay but will be staying in Sac for the summer)

Thanks!
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Old Apr 16, 2012 | 05:04 PM
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Beatdown Z's Avatar
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Plenty of guys rolling around on 200k+ mile Gen III's...
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Old Apr 16, 2012 | 08:31 PM
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Originally Posted by Beatdown Z
Plenty of guys rolling around on 200k+ mile Gen III's...
x2

I honestly wouldnt think about a replacement engine till it stops running maybe after 300k. SERIOUSLY!!!

These arent your old small block v8's that are wore out at 100k, they are just getting broke in. Im not lying!!!

High miles on an LS powered vehicle = lower price, not lower life or clapped out, unless the original owner beat it hard.

The 5.3 that came in my 2000 z71 had 183k on it, i pulled it and swapped in a LQ4 6.0, but it ran great, i pulled the heads and the factory crosshatching was still there!!

I just bought an 04 3/4ton express van with an LQ4 and 227,000 miles, it runs like a champ and you cant tell its got high miles.

Nuff said
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Old Apr 16, 2012 | 09:19 PM
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These iron Vortec LS motor easily go 200k and much more. Do a compression check and if it's good, run it.
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