4.10 rear in new Ford F350
A lot of leftovers have the 4.10 rear any one know if there would be a big difference in MPG towing or would it be negligible..?
Forum Discussion
Grit dog wrote:
And now we have the tall gears will out pull the low gears guys checking in.
Regardless of gas/diesel, number of trans gears, apples to apples, lower gears put more power to the ground.
I spose one could cherry pick one particular situation where the trans gears and torque curve of a particular vehicle might favor taller gears, but that will be a very select case.
Or all the mechanical engineers and theory are wrong......
Wonder why trucks with deeper gears generally are rated to tow more??
Back when trucks had 3 and 4 speed tranny's gear ratio really mattered. Now with 6-10 transmission we can look at final gear ratio based on the tranny gear in use.
Example the RAM with 3.42/Aisin in 5th has almost an identical final gear ratio was 4.10 truck in 6th gear.
The 4.10 truck in 6th is work against a .63 OD ratio while the 3.42 truck is in 5th working against a .77 OD ratio.
4.1 x 0.63=2.583
3.42 x 0.77=2.6334
Now add in the shorter tires on the dually with 4.10 and it is a wash. What you think you gain with the lower diff gears in negated by the steeper OD ratio. Think final gear ratio!
