: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
...all other factors (truck, engine, trans, trailer, tires...) being equal.
I can't math out why, I am not edge a macated as an engineer, but the closer to the drive wheels you make the final reduction, the more "pulling power" a wheeled machine has. Big pulling machines like airplane tractors, ag tractors, log skidders, wheel loaders, heavy haul prime mover trucks even have planetary reduction gears at their wheel hubs.
Wouldn't more gears in the transmission be a far simpler and less expensive solution?
Do NASCAR teams put more ratios (speeds) in the transmission for a short track or "gear down" the rear axle ratio going from super speedway to short track/road course?
This whole thread is interesting, but all the OP really needs is a dually anyway. :D
