Meatpuppet
Junior Member
Hello everyone.
I have a 2003 2500 Cummins with power upgrades with a nv5600 6-speed, AAM 11.5 373 gears. I use it to pull a 5th wheel RV. The 1st gear I use for maybe 3sec and 6th gear revs a bit high cruising down the highway, feels like I could use another gear. I think the best way to improve the truck is to change the ratio to 342. What is the best option moving forward change the ring/pinion or can I swap out a used diff from a newer ram with a 342 already in there?
Thanks
I have a 2003 2500 Cummins with power upgrades with a nv5600 6-speed, AAM 11.5 373 gears. I use it to pull a 5th wheel RV. The 1st gear I use for maybe 3sec and 6th gear revs a bit high cruising down the highway, feels like I could use another gear. I think the best way to improve the truck is to change the ratio to 342. What is the best option moving forward change the ring/pinion or can I swap out a used diff from a newer ram with a 342 already in there?
Thanks