Comparing axle ratios
Well I put this off for too darn long and am now looking at 2017's. Today I drove an F250XLT Supercab, with the 6.2 gas engine and 3:73 axle ratio. I also drove a GMC SLE 2500HD double cab with the 6....
Forum Discussion
GMH wrote:
I currently tow with an '06 2500HD with the 6.0 and 4:10 gears. It has a 4l80 4 speed auto I believe. I tow in 3rd most of the time and it will kick down to 2nd on fairly steep hills. That is why I am wondering if the 3:73 gears are too tall? They would certainly help mileage on the flatland, and I don't plan on doing a lot of traveling in the mountains...but plans change when you have beautiful vistas in front of you.
Don't fall for the belief that there's a big difference mpg wise between 3.73 and 4.10/4.30. It's less than 0.5 mpg.
