Picked up a load of firewood this morning. Normal egts at 62-65mph on the flats is around 600-625. Withe the empty trailer it was 700. With the loaded trailer it was around 725. I have one place where I have to stop and turn left up a grade and there is a sign at the top that is about 75 ft more than 1/4 mile from the turn. By shifting from 1st to second, tc lock, 3rd unlocked, 3rd locked, I was able to reach 60mph at the sign and hold a steady 900deg on the pyrometer the whole time. All in all it doesn't tow that bad.
The only difference between the way the truck was set up today for towing and the way it ran 10.91 at Sac is I added 10 psi more air to the tires this morning.