Hello everyone...
I have an '03 Envoy XL that I've started using as a tow vehicle, after buying it / putting it back in shape the past couple of years (including a built 4L60e). Truck came from the factory with the 5.3L, and it runs great, especially after I turned down the torque mgmt while getting rid of the fan codes for the electro-viscous fan clutch that I converted over to a thermal. Looks great for its age, too - no rust to speak of, thanks to the big-@ssed running boards GM equipped it with.
Discovered after I crossed the Divide and headed for Glacier NP a few weeks ago that I might need a little more 'oomph', as I found myself in the 40mph 'blinker club' when climbing long / steep grades. My residence is in IL--we don't have 'hills', much less 'mountains'.
Now, I know I could get a 2500 w/ a Dmax, and be set for the rest of my life...but I just wrote a PIF check for the trailer - and maintenance on a diesel does scare me a bit, being so different than gassers. But I know it would be a torque monster.
Drove a 2500 w/ a 6.0L yesterday, and it was in rougher shape than I'd like. The motor was the best thing about the truck.
Since GM actually put LS2 motors into the Trailblazer SS back in the day, I know that putting a 6.0L into the Voy should be fairly painless (relatively speaking).
Found a 6.0L from a 2000 Silverado that I can rebuild (it was running, but the owner removed the motor from the truck, took it down to the short block, and decided he wanted to do something else. So it's going to need a good honing on the cylinders, as well as a new crank, as the early ones had a longer crank ('long tail') that would only fit a 4L80 (or a TH400) - and if I can avoid swapping out my newer beefed-up 4L60, I will.
Planning on building some extra TQ/HP into the motor. I don't want / need to 'go fast'...I just want to get 'up the hill'. So I've been researching along the lines of what's needed for extra TQ / longevity, vs. 'extra HP'
The dedicated forum I normally hang out on for the GMT360 platform is great for that platform, but hardly any user base for the GMT900-up trucks. So I figured I'd join here, and see what I could find out applicable to my project.
Hopefully I can find some build threads / advice - although it looks from first glance that most of the 'motor' action concerns the diesel owners. I respect the heck outta y'all - but I'm gonna stay w/ gasoline for the time being. I may regret that, later.
As for me - lifelong IL resident, mid-fifties, currently live at the northern edge of the state. Came 'back' to GM, as it were, with the Envoy. Until a year ago, I worked in IT. Now I'm...let's call it semi-retired. Eventually, I'll head back to work, but for now, I plan on visiting the parts of US / Canada that I haven't seen yet.
I have an '03 Envoy XL that I've started using as a tow vehicle, after buying it / putting it back in shape the past couple of years (including a built 4L60e). Truck came from the factory with the 5.3L, and it runs great, especially after I turned down the torque mgmt while getting rid of the fan codes for the electro-viscous fan clutch that I converted over to a thermal. Looks great for its age, too - no rust to speak of, thanks to the big-@ssed running boards GM equipped it with.
Discovered after I crossed the Divide and headed for Glacier NP a few weeks ago that I might need a little more 'oomph', as I found myself in the 40mph 'blinker club' when climbing long / steep grades. My residence is in IL--we don't have 'hills', much less 'mountains'.
Now, I know I could get a 2500 w/ a Dmax, and be set for the rest of my life...but I just wrote a PIF check for the trailer - and maintenance on a diesel does scare me a bit, being so different than gassers. But I know it would be a torque monster.
Drove a 2500 w/ a 6.0L yesterday, and it was in rougher shape than I'd like. The motor was the best thing about the truck.
Since GM actually put LS2 motors into the Trailblazer SS back in the day, I know that putting a 6.0L into the Voy should be fairly painless (relatively speaking).
Found a 6.0L from a 2000 Silverado that I can rebuild (it was running, but the owner removed the motor from the truck, took it down to the short block, and decided he wanted to do something else. So it's going to need a good honing on the cylinders, as well as a new crank, as the early ones had a longer crank ('long tail') that would only fit a 4L80 (or a TH400) - and if I can avoid swapping out my newer beefed-up 4L60, I will.
Planning on building some extra TQ/HP into the motor. I don't want / need to 'go fast'...I just want to get 'up the hill'. So I've been researching along the lines of what's needed for extra TQ / longevity, vs. 'extra HP'
The dedicated forum I normally hang out on for the GMT360 platform is great for that platform, but hardly any user base for the GMT900-up trucks. So I figured I'd join here, and see what I could find out applicable to my project.
Hopefully I can find some build threads / advice - although it looks from first glance that most of the 'motor' action concerns the diesel owners. I respect the heck outta y'all - but I'm gonna stay w/ gasoline for the time being. I may regret that, later.
As for me - lifelong IL resident, mid-fifties, currently live at the northern edge of the state. Came 'back' to GM, as it were, with the Envoy. Until a year ago, I worked in IT. Now I'm...let's call it semi-retired. Eventually, I'll head back to work, but for now, I plan on visiting the parts of US / Canada that I haven't seen yet.