Towing with a 3.73 F250 6.2L, will a 4.30 axle help ??

06Fargo wrote:
:h

4.3 x 400lbs-ft at 3000 rpm at the prop shaft = 1720lbs-ft to the center of the drive wheels...

3.73 x 400lbs-ft at 3000 rpm at the prop shaft = 1492lbs-ft to the center of the drive wheels...

I think the 1720 one pulls harder on a trailer hitch

wrong, you are not going the same mph in your example. IF you are going the same speed then your transmission in the 4.30 is in a higher gear. thus the overall gearing is the same.

Rework your example at 40 mph, then get back to us ;)