Super duty 10 speed gear ratios
Very similar to the 1/2 ton ratios. They are probably all excellent but my personal preference is that they would have left reverse as a higher speed. I think it was 1:-3.4 in the 6 speed Super Dut...
Forum Discussion
Huntindog wrote:4x4ord wrote:It is even worse than you state. In 2015, all of the big three limited TQ in at least 1st gear to protect the rear end. A 3.31 is stronger than a 4.30. GM has publicly stated that full power is now available in every gear.
An interesting point when looking at the 10 speed in a new F350 vs the 6 speed in a 2015 model is this:
The max rear wheel torque at 1600 engine rpm in low gear (disregarding parasitic losses) in 2020 with 3.31 final gears is:
1050 x 4.615 x 3.31 or 16,039 lb ft.
In 2015 the max torque of the f450 with 4.30 final drive in low gear was:
860 x 3.97 x 4.30 or 14,681 lb ft.
I haven't heard about the others yet.
That thing about diff gear would apply to the 4.615 and 3.97 tranny gears, with the 3.97 being stronger that the 4.615?
