[OutlawDrifter]

The 6.0/6L90e combo is a good one. I drove a 2500HD daily for a year with that setup. It ran like a scalded dog with a custom tune. It would easily see 16-16.5 on the highway at 68-74mph. Pickup weighed 6300lbs and was a 4x4 with 3.73 gears. If it wouldn't have rode so rough, I'd probably still be driving it.

I see you stated tall skinny 33" tire, how much lift are you planning, 4"?

In northeast KS we regularly see extreme heat/humidity in the summer, the humidity is generally 50% or more where I'm at, so I understand wanting a good AC setup.


When the 700R4 dies in my 89 Jimmy, I'll be LS swapping my K5. But I'll keep it simple with a 5.3l and 4l65E....maybe an 80E, maybe. It's just for back and forth to work and I don't need it to pull a trailer.