Tom, the numbers stated above are for all tongue weights.
Pinky, my 1066 Turbo still runs like a top and hasn't been rebuilt since 1980. It has over 100,000 hours on it. My 4020 JD has about the same. Both are good tractors.
The JD and the Genusis Tractors had a 460 diesel in them. It was actually a 460 punched to a 466 cu in in the mid 90's.
Just hauled from MN to CO, then to NM and over to TX and back up to MN again and had no problems whatsoever. 75 to 85mph the entire way and was hauling 24k.
For the person that made the comment on the frames. GM was actually rated the lowest between Dodge, Ford and GM for the 2500 to 3500 trucks.
The company that did the testing was MTS they created the wonderful suspension machines you see advertised in commercials for different vehicles.
They test equipment to it's failure point and provide the results to the companies that request the results.
I do not have the actual numbers due to the fact I am not going to pay for the numbers, but I do know the rankings thanks to my father in law who works for the company and it went from lowest to highest GM, Dodge, Ford. If we can get $5k gathered for each vehicle (2500 is considered 1 vehicle and 3500 another) together on the site I can get all the numbers from the engines, trannys, axles, and frames, suspension for all the vehicles.
My gooseneck is capable of 30k and I have pulled up to 28k with it and the frame is not twisted. My boss's 04 D'max 2500 did twist the frame hauling the same load. The GM dealer in Greeley, CO spent 2 months getting it fixed.
Now when you are done calling names and willing to do some actual work with your truck come look me up. I use this truck on a daily basis. Had it for less then 2 months and it has 12k on it without a problem. Talk on GM boys talk on.....