Purchasing a high mile truck = pros/cons

[kerrige]

The when is a total roll of the dice. These motors are known to run for 300k+ however the valve train is notorious for random failure. Bent pushrods, collapsed lifters, loose or failed timing chains and rockers losing needle bearings are common in these motors at any age. The bottom end on the other hand likely will never need to be touched. The trans is a time bomb ready to explode from the day it rolls of the factory assembly line. Some will last 15k others 150k. I would plan on an 80e swap as soon as funds will allow. The stock posi G80 or known as the grenade 80 is also a known weak point. The fuel pump may likely need to be replaced. That is a good starting point. IMO 4k is a good price and with proper care and maintaince could be a bad ass ride for many years to come.

[Tig]

A friend of mine just picked up a loaded 2000 suburban for 2500 has 230,000 on it

Nice, that is another option. I had found an 01 with 185k miles for $6900. Its a bit more than I wanted to spend but you get the 6.0, 4l80e and 14 bolt rear. It may be worth it in the end and its 2wd.

The when is a total roll of the dice. These motors are known to run for 300k+ however the valve train is notorious for random failure. Bent pushrods, collapsed lifters, loose or failed timing chains and rockers losing needle bearings are common in these motors at any age. The bottom end on the other hand likely will never need to be touched. The trans is a time bomb ready to explode from the day it rolls of the factory assembly line. Some will last 15k others 150k. I would plan on an 80e swap as soon as funds will allow. The stock posi G80 or known as the grenade 80 is also a known weak point. The fuel pump may likely need to be replaced. That is a good starting point. IMO 4k is a good price and with proper care and maintaince could be a bad ass ride for many years to come.

I have read so much about these motors being abused and lasting hundreds of thousands of miles without issue. Its the tranny I am more worried about than anything.
That is when the 01 HD Yukon XL comes into play. Is it worth the extra cash for the added power stronger tranny and bigger rear end? Also, the gearing, 4:10s aren't so pleasant for daily use. I'm thinking about swapping them out for 3:73s, if I go that route.

Thanks for the info guys
I'm thinking swap to 3:73s and be done with it

[kerrige]

4.10s are actually great especially in that big freaking pig. I would say the 80e and stronger rear are defiantly worth it. Think about it this way 4k vs 6900 is 2900 of difference. The cost of a 6.0, trans and rear swap will be a lot more than 3k after odds and ends.

[Tig]

Are there any chassis differences between the HD Sub/Yuk XL and a standard Sub/Yuk XL?
I agree, with the 6.0, 80e and stronger rear, its definitely worth it.

[Tig]

Going out this weekend to find a new to me Chevy.

[Tig]

Yay