Forum Discussion

Explorer

Nov 07, 2016

rear axle gear ratio

Getting ready to move up to a 3500. I've shopped the available trucks, and have a good idea of what I want. The two I have narrowed down to are a '14 and a '15 Ram 3500. Identical with the exception of the rear axle ratio. One has the 3:73s and the other has 4:10s. I'll be towing a 5th wheel in the 18-20K range fully loaded,and by the spec sheets, both will do the job. I'll be running empty a lot, which way would you go?

Tow Vehicles

deltabravo
Nomad
Nov 08, 2016
4:10s
Cummins12V98
Explorer III
Nov 08, 2016
3.42's with an Aisin would be PERFECT for that weight.

So with your two options I would go with the 4.10's, you are turning around 1700rpm in 6th @ 60. same with 3.42's in 5th. That rpm is great for towing.

I have owned both, with the 4,10's you have a lot of room to move up in weight if you want.

People say 3.73's are a good "compromise" I don't compromise!!!
johntank
Explorer
Nov 08, 2016
For a trailer in the 18 to 20K range I would go with the 4:10's over the 3:73's.

JMHO
Grit_dog
Navigator
Nov 08, 2016
3.73s.
Kevin_Todd
Explorer
Nov 08, 2016
Yep...both are DRW
Chuck_thehammer
Explorer
Nov 08, 2016
second vote for 4:10. worth it.

You can Thank Us later.
donn0128
Explorer II
Nov 07, 2016
I assume both are duallies?
Get the 4.10 rear end. You wont regret it.