Urgent! Need help with gear ratio

@AModelCat

 

Depends on the weight. If your gonna be around the 80-90k mark you should be fine.

 

In that case depends how steep the hills are!
Seriously if the hills are large you may have some struggles. Someone should chime in with a more technical answer but you’ll probably be looking to re gear it.

 

Honestly it’s gonna be very difficult climbing those hills. I’m talking a 15-20mph climb if it doesn’t overheat or the trans decide to miss a gear etc.
That transmission is max rated at 110k GCW and the axles are 80k max GCW.

Unless this is your only choice I believe I’d get a different truck or scale back the weight.

 

Just send it you'll be fine. The rear gear only matters in high gear.
On the hills you might be a gear or two lower in the transmission and keep the right foot off the floor and it won't overheat.
In the good old days we used to haul 140,000 lbs all over the place with 187 hp and a tri-plex, then upgraded to a 237 with a 5 speed main with an overdrive.
Then went with a Louisville with a 335 and a 9513 trans but ya 4.33-1 rear. at 140,000 lbs.
Sorry for the reminiscing,
But ya if I needed more in your case I'd bump up the torque first.
The driver is the most important part of this equation, just don't drive it like it's a company truck.