Ford sales brochure and me buying a 94 when they were new, and looking at all possible combinations available (including new STX) and me calling Ford for confirmation that the brochure was correct. Unless a guy bought the 3.0/auto or 2.3/stick in 4x4, then you could have 4.10's with the 7.5" carriers. Me still has that sales brochure in a box around here.

On edit: Might wanna check #87, it's showing 7.5" open 4.10.

 

to change the gears over to the 4.10s will i need any special tools or are there any tricks to doing it? i have never changed gears in differentials so any kind of input would be helpful

 

Axle tag reads 4L10, you may have been around when these trucks were made (so was i, but i was little and had other priorities.) This could have been an executive truck for all i know. Its an 8.8 rear end and its got 4.10s.

You might want to have someone who has done it before help you. doing axle gears isn't easy. off the top of my head i can't think of anything you'll need special tool wise.

 

Which transmission do you have? You didn't mention the year Explorer you got it out of, but I'm guessing it's an M50D-R1. There are a couple of different first, second, and third gear ratios that you might have, , and if it's from and Explorer, it's got the numerically lower gears.

1st.....2nd.....3rd....4th.....5th
3.40...2.05...1.31...1.00...0.79
3.72...2.20...1.50...1.00...0.79


To guys that have never heard of regearing transmissions, it's not uncommon in cars. Most transmissions on the market have different variations based on the vehicles they're used in. People have researched them to customize their gear ratios to improve performance. Usually in a car, people are trying to get closer ratios, to keep the engine in the power band most of the time.

 

hell throw in straight cut gears. Love that whine

 

well i already got the gears and want to put them in but i havent gotten a set of 33's yet and i need good gas mileage because i do a lot of driving so i think ill wait to put the gears in for a while until i get the tires. last weekend i picked up a 89' F250 Extended Cab 4x4 with a 351 C6 in it so i now have something to haul stuff.

 

The transmission that I pulled out of the explorer i think is an M5OD. on the side of the transmission it said something like FZ something something but i dont think that those numbers mean anything. the explorer is a 1993 4x4.

 

You most likely have this set in your tranny, then:

1st.....2nd.....3rd....4th.....5th
3.40...2.05...1.31...1.00...0.79

 

okay. i already have the gears so probably going to go with changing the rearend.