I want to find out some info of my axle gearing. The door sticker is gone.

There is a metal tag on my rear axle that reads

V125C
55 10 2 8E17

 

You're missing a couple numbers, they're probably under the bolt holding the tag. If I were to guess the missing axle ratio number is 3 meaning you have a 3.55 open diff.

 

3.55 in a 1 ton 4x4 with a big block? Was that an option or has my axle been swapped? I was expecting something closer to 4.10s.

 

I got 3 55 is my f250 with an idi so its possible. I was kinda expecting bigger gears in mine as well.

 

I've got 3:55's C6 and a 460 in my 250. It does fine. Heck, I took a trip on the interstate today and I got 11MPG running 70+ all the way!

 

standard gears were 3.55 and 4.10. you could get either. 3.55 was ordered for highway running, 4.10 was ordered for towing.

 

You could just jack the rear axle up and spin the rear tire and count how many roations the axle has.

 

My brother's 91 F250 460 E4OD has 3.55 Open diff gears. It kinda saddened me but hey just means you can put whatever gears you need/want in their with a great locker and have an excuse for it.
Trav

 

This now brings up another question if anyone has any input. I tow a travel trailer that weights 7200lbs dry and about 7500-7700 lbs with water and gear.

Can I using the same axle change my gearing to like a 4.3 set-up? Is their like a kit you can buy online for all the correct parts
so that I can swap out the gearing? Is it super expensive for parts?

EDIT- Just thinking now, its a 4wd does this mean I'd have to change the front as well?

EDIT- Yes I'd have to change both & wow that's pricey. 1100$ and I'm not sure if I could do the gear lash adjustment or not.
https://www.nitro-gear.com/Ford-Supe...-10-select.htm

 

You COULD change it in the rear just absolutely under no circumstances ever allow it to engage the front driveshaft. Or blow some **** up i domt know what you’re into

easy.