So after deliberating I have found a good deal to replace my busted 70 in my 93 5spd extended cab. It's a 93 or 92 dually extended cab with an automatic. I know it's a Dana 70 as well, so this should work for me, correct? This site has been great for me already, thanks to everyone who has and/or will help!

-Jesse

 

So your current truck with the busted D70R is a single wheel? If so then the dually rear will fit...but the wheel spacing will be different from the front. I believe the DRW axles are a tad wider then the SRW axles.

 

That's fine I think, as long as it's not like 3 inches on both sides lol

-Jesse

 

And yes, single wheel on mine

-Jesse

 

I haven't measured the Dodge D70s, so don't quote me on this.... but there's a good chance that the housing itself is the same, but the hubs are different - meaning that you can put the SRW hubs on the dually housing to get your track width back to stock.

Measure the distance between the brackets that the brake backing plates bolt to on both your housing, and the donor housing. If they measure the same, your SRW hubs and brake parts should bolt right up to the dually housing.


-Hans

 

Didn't dually axles have 5/8" studs and nuts ?

You will have to switch over the hubs is this is so... otherwise you'll have a difficult time finding rims.

 

I have slapped SRW rims on 1st gen dually rears before...

 

I just had him measure axle tubes and I did as well. To the back plate the dually tubes are 2 1/4" wider on both sides... Not sure if I'm to concerned with it, or if it
Will even be noticeable with my 37" mtrs? I have also heard of the bolt size being different... in which case I'll pound them out and put my size bolts in I think
-Jesse

 

What that means is you'll be able to swap your SRW hubs and brakes onto the dually housing to get the right studs, but you'll have to use the axle shafts from the dually housing, and your rear track width is going to wind up 4 1/2" wider than you have now.

It will work, but you have to decide if having your rear tires stick out an extra 2 1/4" on each side is a big deal or not.

- Hans

 

here is a few differences.

axel length



hub



inside bearing



spring perches are in the same place and everything like that, but from wheel to wheel the dually rear is quite a bit wider, I was thinking 7 inches total, I could be off on that though.

 

Why does it have to be so hard to just source the axle I need? I suppose I could use spacers on the front... but I don't want to. Anyone have one of these in Wisconsin ? Any idea where else to look? I would just repair mine but I can't find a case spreader...

-Jesse

 

Looking at FarmBoy's second pic, it looks like the you might not even be able to swap the hubs without having the shafts cut down and re-splined.

Looking at your older post, it looks like the reason you're trying to replace the rear axle is that your spider gears took a crap... right?

If all that's messed up are your spider gears, why don't you just stick new spiders in the carrier and be done with it? That's a ton less work and much cheaper than swapping in a whole new rear axle.


-Hans

 

I have had my rear apart and switched carriers and never used a case spreader. I am pretty sure if all you need is spider gears you don't even need to pull the carrier.

 

How could you replace those gears without removing the carrier? How did you pull it out without a spreader? How did you get it back in...?
-Jesse

 

You can pull the carrier out with a ratchet strap attached to the bumper or hitch. The spiders can be changed on a power lock rear diff only by removing the carrier. An open diff spiders can be changed in place.

Putting it back in can be done with a rubber mallet most of the time, from what I've read.

or you can spend the dough and order a spreader on ebay. I think he might still have a few of them. You can then rent it out to your friends, or make a nice BBQ grate out of it with a few bits of extra steel lying around...