A buddy of mine dropped off a rear diff for my truck tonight. It was to close to dark to really tell anything about it other than I took the 16.5 split bud of the pass. side and some sort of dually wheel off the driver and found that the drums came off without pulling the axle. I stuck the drum back in place and put a dually wheel off of my truck on it and it wouldn't go all the way against the drum. Atleast it seemed that way, I tried both sides and it was the same on both. I was just wondering if this is an old Dodge rear diff., or if it something else. It is not what it was supposed to be ('90 D70) but seems to be in very nice shape. I think it is a Dana, like I said it was to dark to make out any type of marking on the diff. Does anybody have any knowledge of the rears?

 

Sounds like maybe a GM Corporate 14 bolt semi float. That's the only non full float axle I can think of that would be in a dually application. Dodge used Dana forever and it was either a 60 or a 70, both full float, I think. A 14b semi-float prolly won't last long behind a bombed CTD, or a heavily loaded one. Can't say for sure why the rims won't fit...maybe it'll become clear in the light.

 

My guess is that your trying to install "coined" dually wheels on a diff that's not made for it. If the diff hub surface is flat it will only take the GM style flat dually wheels that take the torque plate. Either way if it's non-floater I'd move it on to someone else and keep looking for the right one.

 

If you're lucky, he left you a Dana80 from a newer Dodge. Same thing with the coined vs non-coined wheels, though.

 

I don't think it's a semi-floater, I think it just doesn't have our stupid inboard drums.

 

That's what it seems like. It is definately not a Corporate 14 bolt, thought it could have been last night but with what little daylight I was left with today it has the Dana stamp on the diff cover. There seems to be numbers stamped on the cover as well but I need to scrape the tranny fluid residue off (what ever it came out of had a nasty trans leak). Tomorrow I will clean it up and get the #'s off of it, maybe the guru Wanna will be able to tell from that. Thanks for the help guys.

 

Well I got some #'s off of it. On the diff cover it is stamped DANA and underneath that is stamped 132 6, then underneath that is REV. D, and under that is what appears to be a date that reads 11-13-78. On the back/top/passenger side of the case on the outer webbing is casted 40236 or 40286 (I'm almost positive it is the 40236 though). On the lower driver side webbing is casted 073A. On the front driver side of the case, on the axle tube part of the case, is casted what appears to be 70-10S0 or it could be a 5 and not a S. Hope somebody can understand this. I do have pics that I need to get up.

40236
DANA
38453
132 6
REV. D
11-13-78
073A


And if you are looking at the front of the differential, to the right side of the yoke is the 70-1S0 or 70-150.

 

Well I can't get the pics up for some reason. So hopefully someone and clear up with the #'s. Thanks guys.

 

Anybody have any info? Is this just an old D70 that the drums don't take an hour to pull? If so, then why is there a slight ridge that prevents the wheel from going tight against the drum? I'd like to order brakes, hardware, and cables but don't know what to order them for. Any help?

 

So I still can't seem to find anything. I have talked to junk yard guys, mechanics, 4X guys, Dodge/Ford/and Chevy guys and nothing. The only thing that one of my junk yard friends said (after taking a look a the diff) is that he thinks there should be plates that go between the wheel and drum. That would explain for the gap. I don't remember what he called them but they are what is on my Chevy with the a 14 bolt, plate that goes over the lug studs and has the alignment pin on it. The D70 C&C in my other truck has the pin on the drum and this rear does not have this pin. So what does anyone think of this, and where will I get these plates if this is the case.

 

No help on locating the plates you are talking about, but a couple of good pictures would go a long way in figuring out exactly what you have.

 

Here are some pics.
In the second pic you can see the lip right before the drum the is stopping the wheel from tightening to the drum.

 

In the third pic. To the right of the center section there should be some numbers on the axle tube by that brake line clip. The first numbers should be the build date. Then to the right will be another set of numbers. That is the BOM number. That is the one we need.

 

No #'s on the axle tubes that I have found yet. Maybe another hour worth of wire wheeling will tell more, but all the #'s I have found were on the diff cover or the actual center section. I'll see what I can find.

 

By the shape of the hub, meaning the fluted sections removed (approx 5-6 of them), I would say that looks like a 90's Ford model. Could be earlier.The Dodge Danas had symmetrical fluting and the Fords started wide and became narrower as they pointed to the drum. Middle pic shows this well.