So I had all these great plans a couple of months before easter to swap the 12 valve cummins into the hummer, have it all set up to pull my range rover out to moab, blah blah... and it was going so well, right up until the rover crapped an IP and the hummer developed a massive oil leak from the cam inspection cover 2 days before we were leaving... so I decided to fix the rover and leave the hummer, see if the old dually was up too pulling my (really heavy) rover out there. The ride out there went well - I had to drop to 2nd gear pulling about 30 up the passes, but my temperatures were staying ok and I think I probably made up more time in the flats with my long gears than I would have if the truck was geared to pull the hills in 3rd with the 4 speed. The motor does have 360k in this thing, so I'm not complaining. The lovely utah state patrol black flagged the dually almost immediately after I got there - wrote me a warning for the lack of fender flares, mudflaps, front bumper, front license plate, etc... basically said if they saw the truck in town again before I was leaving they would throw the book at me. 
I hate how **** they've become out there for that weekend. So I left it at camp for the duration of the stay, loaded out on sunday and got some entertainment on the ride home... I was pullin strong through vail pass, but the top of eisenhower had a good 6" of slushy snow towards the top and I lost it about a mile from the summit, slid my way to the side of the road and had to kill the truck to deal with the 4x4. I don't have a good ebrake in there and I haven't reinstalled the 4wd shifter since the body lift, So I had to choc the tires and crawl under the thing to try to get 4x4 in... in a blizzard... no fun. Naturally, the truck was hot enough when I shut it down that the sudden lack of coolant flow caused it to overheat, so now I had 4 gallons of perfectly good coolant on the ground too. took about 20 minutes to get water back in it and get it in 4hi, which still didn't work, and then into 4lo to creep to the summit. The other side of the tunnel wasn't nearly as bad, so I went back to 2x4 and proceeded to spend another hour on top of that hill cause some other accident had the downside down to 1 lane. But I made it there and back safely... which is all that the tow rig's supposed to do 
When the truck was working hard, I was running about 2600 rpms just above the L on the stock temp gauge, pushing 11psi solid and between 1100 and 1200* on the pyro. the only thing that was odd was on the backside of the passes when I was engine braking in third, the stock oil pressure gauge would bottom out and it would take a couple miles of pulling again to come back to normal - anyone else had this one? And I burnt/ lost a gallon of oil each way 
If I had known the dually was going, I would have thrown the zf and the dps pump sittin around here in and rotated the tires and fixed the shift linkage and so on... but it did a great job, considering the situation. And the rover did great too... Here are some pics of the aftermath -
I hate how **** they've become out there for that weekend. So I left it at camp for the duration of the stay, loaded out on sunday and got some entertainment on the ride home... I was pullin strong through vail pass, but the top of eisenhower had a good 6" of slushy snow towards the top and I lost it about a mile from the summit, slid my way to the side of the road and had to kill the truck to deal with the 4x4. I don't have a good ebrake in there and I haven't reinstalled the 4wd shifter since the body lift, So I had to choc the tires and crawl under the thing to try to get 4x4 in... in a blizzard... no fun. Naturally, the truck was hot enough when I shut it down that the sudden lack of coolant flow caused it to overheat, so now I had 4 gallons of perfectly good coolant on the ground too. took about 20 minutes to get water back in it and get it in 4hi, which still didn't work, and then into 4lo to creep to the summit. The other side of the tunnel wasn't nearly as bad, so I went back to 2x4 and proceeded to spend another hour on top of that hill cause some other accident had the downside down to 1 lane. But I made it there and back safely... which is all that the tow rig's supposed to do When the truck was working hard, I was running about 2600 rpms just above the L on the stock temp gauge, pushing 11psi solid and between 1100 and 1200* on the pyro. the only thing that was odd was on the backside of the passes when I was engine braking in third, the stock oil pressure gauge would bottom out and it would take a couple miles of pulling again to come back to normal - anyone else had this one? And I burnt/ lost a gallon of oil each way If I had known the dually was going, I would have thrown the zf and the dps pump sittin around here in and rotated the tires and fixed the shift linkage and so on... but it did a great job, considering the situation. And the rover did great too... Here are some pics of the aftermath -
lol
