Done yet? 




Dan. There are a lot of these engines in the 35-45K range. The question you have to ask on a 2-4 year old engine with a claimed 15-20K is how long has it been sitting and corroding internally. I'd much rather have a 50K fresh engine than a 10K one that has been parked for 2-3 years... plus it's gonna be a lot cheaper. These are 200K engines as you know, so longevity is not really an issue.
Just an opinion from an OLD guy who has been around cars for a LONG time.
The thing that worries me about engines with slightly higher mileage, is these motors are coming out of 3/4 and 1-ton trucks and vans. Those 35-45k in 2-4 years could be hard miles (towing, getting beat on right after a cold start, etc). I'm trying to avoid an engine that's been in a work vehicle that was ridden hard and put away wet. The amount of miles doesn't bother me so much, as how quickly they were racked up, and what kind of miles they are.
Who knows, maybe I'm over thinking it.
You are not overthinking it. It's YOUR hard earned money being spent here. Get what you are happy with.
Yukon or Denali 6.0 FTW!
Does it tick?






Actually, that's a good point. An engine out of one of them is less likely to have been romped daily...
The Denalis were the LQ4, correct? I think only the SS trucks were the LQ9...
