Nbs 02 denali xl. Ace

[AceAdams11]

Hi I'm aaron. I have a 02 denali xl. I was a mechanic for may years and still do a lot of work out of my garage. I got plans for mine. Mostly performance. I'm keeping this truck forever and want it pulling around 800 hp come hell or high water. Today is the first day in that process. Picking up twin turbos. Any advice on any good performance parts and definitely the trans will be appreciated.

 

[NathanJax]

 

[Turbo731]

Yes definitely look into a 4L80E swap. Surely the awd can be swapped too. I'm so sick with the 60, I'm on round 3 in my trail blazer with just a tune. Asap I'm swapping an 80 into our yukon xl before I even touch the motor any more. Only brand I've had experience with is TCI on my old school and I'm not at all impressed or satisfied. It took a crap on me after about 1500 miles , of course a few months or so after warranty was out