One of those people lol...towing with a 12 valver cummins

[spotknot]

The 47re is all the transmission you need too pull 10,000 lbs. but you have too keep it COOL under all towing conditions. use syn.oil an a big cooler, an you will have no problems keeping your temp below 200 even with a few engine up grades. By the way in my expericine you have the best cummins made.

[Dunner]

12 Valve.

[Larry]

We had a 12 valve, althouh 5 speed, put towed east coast to west coast more than once, adequate power. If the trans is slipping you aren't putting all your power to the ground. oerend seems to be the choice of many with good luck, don't skimp tryin to save a few bucks, it will only cost in the lond run.

[Joe O'Melia]

DTT DTT Performance Diesel Transmission and Power Accessories has one of the best/bullet proof fixes for the dodge transmission. If you are going to drop the trans to replace the torque converter you also need to upgrade the internals.

You could take a trip to DTT in Abbotsford BC and get it done

[Mekanic]

NO Car company automatic trans will last more than 100K doing what you aren doing with the truck. No matter who builds it, even with special parts.
I'd go and convert it to a stick shift. and not just any stick shift.
Some thing like a 6 speed Eaton FS-5106A Trans. no it won't bolt in exactly the same as your auto trans. they are 24 inches long or so and weigh over 300 pounds.
FS=Full Syncho. FSO= same except overdive top gear these also give you the chane for a Hevy duty clutch.

I have a 94 Ford F-700 with a 190 HP 12V 5.9L cummins and that very 6 speed trans.
My truck has a 24 foot box and tows a trailer with a Jeep on it. Total weight
18-19K gross 10.5 MPG on flat ground 10.0MPG in the mountains. this thing is as aero as a shoebox. I got this MPG at 65mph on flat ground.

[tow4you]

Make sure if you have it rebuilt you have them put a shift kit in. That will solve all your problems