Changing from 3.73 to 4.10 gears
Hello all, After towing our new Reflection 320MKS from Eastern Iowa to Estes Park Colorado and back, I need more power for the hills. I have a 2015 F-250 with the 6.2 Liter engine. I have 3.73 years...
Forum Discussion
4x4ord wrote:goducks10 wrote:
I very rarely see 2nd with my 6.4, 4.10 gears towing 9300 lbs in the mtns of Oregon. Only on the steepest curvy sections. Most of the time I'm cruisin in 4th with some 5th and some 3rd mixed in. Freeway is all 5th till I hit some hilly areas.
If you have 32" tires you will be running 3650 rpm in 3rd gear at 60 mph. The 6.4 Hemi makes about 290 HP at that rpm. You should be able to tow your trailer up a 6% grade at 60 mph in 3rd gear. Anything over 6% and your in 2nd ... I would say your truck/trailer combo is a pretty good match.
You're pretty much spot on as I use 3rd for those steeper sections.
33.2" tires OEM
1.41 3rd
4.10 final
60 mph
3510 rpms
