Tested my '50 3100 today. I'm running the Patricks 3:55 conversion and ran the truck about 25 mi at 60 mph. As soon as I pulled into the garage I crawled underneath to check everything out. I noticed that the rear differential cover was warm to the touch. Not hot, just warm. Fluid is full. I'm more concerned about the tube. The bell housing on the upper torque tube was quite warm. Now it wasn't hot, I could keep my hand on the tube/bell. But it was noticably warmer than the surrounding area and a bit warmer than the transmission. Is this normal? I could only find 1 previous post on this and was not sure what the final conclusion was. Does anone else notice this on a torque tube set up?
