what axle

[spencermumma]

looking to run 4.10s and a locker or a spool but wondering which axles i have for front and rear both have a 1990 dodge with th e slipomatic wondering what i can do since i think i have a dana 71 since i have 3.o7s anything i can do?
thanks spencer

[Mark Nixon]

The 3.07 housing is unique for those gears.
From what I know, you'd be experimenting by putting 4.10s into the rear housing.
The front axle is a Dana 61 and I believe they were available with deeper gears, since some earlier Ford 4WD trucks came with Dana 61 rear axles and had different gear ratios.

Mark.

[spencermumma]

so basically it would be easier to just get a dana 70 correct?
spencer

[Mark Nixon]

Or 80.

Mark.

[spencermumma]

So what years will fit?

[Mark Nixon]

'94 up on the Dana 80 will "work".
It's a bit more of a hassle to install and it is somewhat wider overall than the axle you have under it now.

Any Dana 70 from 1989 through 1993 is a direct bolt in, so long as you stick with the single wheel, like you already have.

Mark.

[spencermumma]

You wouldn't know or have anything in the years range would ya?
Spencer

[Mark Nixon]

I don't have any personally, but I can check with 1 fellow I know and see if he still has the 3.55 one he had a week ago.

Mark.

[spencermumma]

any way i could run a 3.55 gear in my axle or am i stuck with the 3.07s?
spencer

[spencermumma]

Bump

[Philip]

any way i could run a 3.55 gear in my axle or am i stuck with the 3.07s?
spencer

I only know of one person that has installed another ratio in a 71 axle. He spent time on a lathe getting a carrier modded to work.

3:54 axles are easy to find. Post a wanted to trade add. There are always people looking for the 3:07's.