How much weight towed with a 98.5-01 Cummins dually?

[Bob Mulry]

Originally Posted by Rod Greene

I would be worried about the NV4500 5sp trans when pulling heavy. I grenaded 2 of them in my 97. I went to a NV5600 6sp and never a problem since.

I also blew up 2 NV4500 transmissions in my 1999 24 valve CTD and I hated the gear split going down from 4th to 3rd and trying to get back into 4th gear. You couldn't get enough RPM in 3rd gear to get into 4th gear without loosing all of your boost.

I was looking at buying a US Gear Aux Trans, but I found a place on line that had a full conversion kit to swap out the NV4500 for a 6 speed NV5600 with the big input shaft. Best thing I ever did because they made it an easy swap with flywheel, pressure plate, disc, fluid, trans mount adapter and an extender for the speedo sender on the trans..

By the way all of the parts came in MOPAR boxes including the trans fluid.

I tow about 13,000 pounds with a 3.55 rear gear. Even up and through the Eisenhower Tunnel at 11,200 feet