Does anyone know the towing capacity of a 1990 Dodge Ram 2500 4Wd with a 360 and auto transmission w/overdrive? I had 2 owners manuals but I lost BOTH!

That's tough. The Dana rear ends for Dodge's in the late 80's and
90's were so many options.

Your best bet, might be to have a dealer run your vin, and see what
comes up.

Not sure on the capacity, but i can tell you that it will pull a 79 blazer out of a mud hole thats buryed to the door handles

lol...i bet that was a fun time in the blazer

If my memory serves me correctly, the 3/4 ton with the 3.54 rear end I think could do a max CVWR of 11500lbs. The owners manual has a section in it that you can follow to find the max CVWR rating of the truck. Remember to subtract your curb weight from this to get your actual maximum trailer towing capacity.