View Full Version : Diff question..

08-30-2009, 10:15 PM
Is it possible to run a 4x4 with a 3/4 ton D60 diff in the rear and a 1/2 ton in the front? Is it possible to have the gearing close enough? Reason asking i just got a truck with this setup...wondering if its possible or if i should swap to either a 1/2 ton running gear totally again or go all out on the 3/4 ton setup lol and how hard is that?

08-30-2009, 10:17 PM
gears gotta match if yer gonna put it in 4by

08-30-2009, 10:23 PM
Im thinkin they do or are close because they put them into it like that and the 4by aint broke...So must work? lol but i guess i'll find out if it binds!

08-30-2009, 10:26 PM
open up yer diffs and count splines and do the math.

FU Toolbag
08-31-2009, 05:11 PM
open up yer diffs and count splines and do the math.

spline count? I prefer to count teeth.

your gonna run different bolt patterns for your rims.

08-31-2009, 05:56 PM
yaya, teeth lol

m j
08-31-2009, 06:54 PM
chances are they are the same.
ford didnt really offer gearing based on 1/2 or 3/4 ton
if it is 70s truck they pretty much only offered 3.55 or 4.10 across the board

08-31-2009, 09:57 PM
Ya it is currently getting run with a 3/4 ton rear diff and 2 different sized rims...>So would be interested in trading for a working 1/2 ton diff i Will be looking at the metal tab to see gear ratio tomorrow tho it is a torquey mother of a D60...

08-31-2009, 10:52 PM
My friends got a 65, started as a 2wd 1/2 ton, then became a 1/2 ton 4x4, then 3/4 ton 4x4, then 1 ton dually, all the diffs matched gearing.

Wouldnt be too much harder to swap the front to a 3/4 ton diff, then yur a bit heavier duty if ya wanna lift it and run bigger meats.

08-31-2009, 11:29 PM
How hard is that with Shackles up front and the leaves???