Diff ratios

[Bspice03]

I have a 03 5.9 with the nv5600 and it supposedly has 3:73 gears but it is at around 2400rmp doing 120kmh(75mph) which seems high. I was recommended 3:55 gearing but I don’t want to spend the money for it not to work right. Just wondering if anyone has insight on this.

 

[tron67j]

Perhaps this will help. http://www.csgnetwork.com/multirpmcalc.html

 

[rzr6-4]

Are you sure its actually going into 6th? With my oversized tires I rarely make it to OD.

 

[Bspice03]

Are you sure its actually going into 6th? With my oversized tires I rarely make it to OD.

The shifter is going into 6th so I’d say it is