Angry Johnny

I still have the equipment list sticker for my truck that states Spicer 70 axle, 3.5 ratio and limited slip differential.

It does not say HD or U on the sticker. Does anyone know how to tell exactly what this is and what the axle spline count is, 32 or 35? I don't want to pull an axle just to find out if I don't have to.

Oh yeah, it's 2WD.

dodgenstein

The rule of thumb is if bolts retain the axle shafts, 32 splines, if there are studs, lockwashers and nuts, 35 spline.

oliver foster

dodgenstein is correct, that is the commonly what you will find, but I have seen variations. The older axles seem to be 35 spline with the studs and lock washers, then Dodge seemed to phase in a lighter duty 32 spline axle shaft.
If it was me and I needed to make sure I was getting it right, like ordering a locker for it or the like, I would pull an axle shaft.

edwinsmith

Do you count the peaks or the valleys?

Angry Johnny

Thanks guys.

mknittle

Both I have a 70 spline.

oliver foster

Mark, you with the old non intercooled motor, I would guess you have 35 splines...or 70.

AJ I would guess would have 32 splines with his '92.

But you know what happens when you guess.

mknittle

Yeah, mine are 35 spline.

edwinsmith

I was jokingly referring to fence-post error but there isn't any of course.

oliver foster

Just to showcase that the bolt on and the stud style axle shafts come in both splines counts. My '91.0 Poncho has 35 splines with one bolt on axle shaft and one stud style axle shaft. I am guessing one was replaced during its life, rather than it being built that way from the factory. Or they literally ran out of stud style axle shafts while building my truck.

MrFusion

Also, don't believe everything you read on the build sheet. Mine listed a Cummins motor AND an NP208 transfer case. I don't think that an NP208 was ever available behind a Cummins and I definitely have a 205.

There a about a million different configurations of Dana 70. The rule of thumb is good but i'd pull an axle and count to be sure.

Alec

So, one of the 35 spline shafts has no provision for the conical alignment washers? I've not seen one, but (thankfully) there's a lot I've never seen . . .

oliver foster

Correct. If it was just a question of locating the correct mounting hardware, I would have done that. I found the mismatch axle shafts styles when the axle was getting refreshed for the trip to Carlisle two years ago.

Angry Johnny

I was asking because I'm looking around for parts to rebuild the LSD. Making sure what is available. I really need to take it apart before I order any parts though. I drained some gear oil out and added two bottles of friction modifier to it yesterday and it has quieted down a lot so just going to hold out until I get the Accent together and tagged so I have something else to drive.