Why 4.1 axle?
I tow an 8000 pound trailer with a GMC 2500 with 6.0l engine, 4 speed transmission, and 4.1 axle ratio. I rarely need 3rd gear on the highway; only on steep hills. For my next truck, why not get si...
Forum Discussion
time2roll wrote:
OK skip to 16:10 and the F150 is in 5th gear out of 10 going down the highway. I think I hear it go to 6th very shortly. Just saying it would bug me to use less than 8 out of 10 gears when towing. 4.10+ is what gets you there.
TFLT comparing F150
The whole point of having 10 speeds is so you can use "less than 10" when towing heavy, and save the others for economical cruising.
A loaded semi may climb a grade in 9th or 10th, does that mean it's using less than 18 gears? Many modern semis use 2.xx rear ends for the exact same reason.
In the old days of 3 or 4 spd automatics, you have no choice but to choose 4.10/4.56s for towing, or 3.55 for cruising, and compromise every other situation. An 8 speed or 10 speed with 3.55s have a lower 1st overall gear ratio than a 4 speed 4L80/48RE/4R100 with 4.56.
