How to choose the right axle ratios for your truck
Now I know why my 2015 GMC 2500 HD 4x4 has the 410 rear gearing http://www.gmc.com/gmc-life/how-to/choosing-the-right-axle-ratios-for-your-truck.html
Forum Discussion
Ivylog wrote:
Well :S With that small a 5er I'd use a 3.73 with your diesel engine and the 4.10 if it was a gas.
The 6.0 is a gas engine, and in the current GM HD's, you get the 4:10 with the gasser and 3:73 with the Duramax, no other choices. I had a 2013 6.O with 3:73 which was the last year those were availible I believe, and can tell the difference off the line with my 2015 with the 4:10
