what makes the D80 superior to the D70?? Are the FF hubs/bearings the same?? Axle O.D. & spline count differ??
Goin out for dinner & hoping to have an answer for buddied sellin a D80 for when I get home.
guy 1 has '93 D70 (1.5" 35spline)
guy 2 has '95 D80 (no freakin idea)
Gears and locker options are not a deciding factor.
I leave this decision to 'the pro's'.
Thanx.

I can't tell you much from a stats point of view because I havn't opened up one. But I can tell you it is a lot bigger than d-70. I believe they have disks too, well at least the one your looking at.
Only thing I'd put it in would be a tow rig for overkill or something with 48's

the D80 is HUGE. with 38s you'll have the ground clearance of a d60 with 33s. It is definitely not a good choice for a rock crawler. If you ever were to need that strength you should just go to rockwells. definitely go with the 70. One thing to consider, i believe both of those have the new funky metric bolt pattern.

-Steve

Funky metric bolt pattern started in '99, and both are drum brake.
Nobody has mentioned D80 spline count or shaft size. Tried searchin and only confermed what I already knew about the D70.
Could it be bigger than 1.5" 35spline, or just WAY more heavy duty housing??

Sorry, pm alpo23 he should know he is the ford guru for sure.

Originally posted by bent70
Sorry, pm alpo23 he should know he is the ford guru for sure.

Oh fawking great:rolleyes: , Unfortunately I don't know everything, wish I did,but no.:flipoff2:
I do have a spicer book that covers the years in question for the D70 and D80 he is asking about but it does not show the spline count or axle shaft lengths like the earlier one. I would have posted to this earlier if I did actually have something worthwhile to say in answer Rogue Bronco's question.
The only usefull info is the D-80 was only in the F-450 Cab&Chassis DRW for the year listed by RB. gears are either 4:63 or 5:13.
The D70 was E-350 only, various models there in. 3:54 or 4:10.



That is all :p



Eric

I'm wondering if the '93 axle is actually a Sterling 10.25 axle, not a D70.

I got the D70
it's outa a '93 Van dually E-350 (congrats Aplo)
still not sure what D80 stats are, other than big & heavy.
Very curious as to what the axle size/splines are in the '95 D80.
It's 100Bucks Canadian (so like 50Bucks to most of ya) with 4.10 gear set, complete with drums.
Contemplating buying it just to be THE ONLY PERSON HERE TO KNOW THAT ANSWER!! :flipoff2:

I know little....what I do know I will post.
Dodge uses the Dana 80 "Hybrid" that to my understanding is basicaly a Dana 80 with Dana 70 axle tube and wheelbearings and such. Traction aiding diffs for this axle are available Also of note in the Dodge application they are 1.5" 35 spline shafts. Ford&GM also used the Dana 80 They use a carrier split of: 3.73 and down, 4.11 and up. And run a rather beefy 11.5" ring gear. They show a 37 spline pinion as well as both a 35/37 spline axle shaft...application charts show the 37 spline shafts to be 1.60 dia.
I know it's very little info but maybe it will help.

NoRM

[QUOTE]Originally posted by P|n-BaLL
[B]I know little....what I do know I will post.
Dodge uses the Dana 80 "Hybrid" that to my understanding is basicaly a Dana 80 with Dana 70 axle tube and wheelbearings and such. Traction aiding diffs for this axle are available Also of note in the Dodge application they are 1.5" 35 spline shafts. Ford&GM also used the Dana 80 They use a carrier split of: 3.73 and down, 4.11 and up. And run a rather beefy 11.5" ring gear. They show a 37 spline pinion as well as both a 35/37 spline axle shaft...application charts show the 37 spline shafts to be 1.60 dia.
I know it's very little info but maybe it will help.

Thats real close pinball, but the dana80 hase a 11 1/4'' ring gear,the dana 60 and 70 uses 29 spline 1.25 dia. on the pinion. The new '99 up ;ford F450 and the old superduty '90 to '97 and the 3500hd chevy have the 37 spline, all others are 35 spline. steve Differential eng. inc.

Thanks for the correction Steve.......dunno why but I apparently brain farted the ring gear size... The part I was confused with...I am VERY familiar with the Dana 70/60 pinion Diam but whats the spline count and size on the Dana 80 pinion? I personally have never had a Dana 80 apart yet...been in those 135's though...derr is some beef;-)

P.S> Ya build Some nice looking diffs......I been following the 6x6 stuff quite closely as I like the axle tech. What I need is sum of dem Moog/9inch combos for my trail rig....... but alas I am too poor and well...me and 9 inchers are a bad combo....lol

NoRM

Originally posted by P|n-BaLL
I am VERY familiar with the Dana 70/60 pinion Diam but whats the spline count and size on the Dana 80 pinion? I personally have never had a Dana 80 apart yet...been in those 135's though...derr is some beef;-)
NoRM What is the clearance on the Dana 135? Better than a Dana 70?

1999 on
Dana 80 35 spline only
1.50"
atleast the dually 1.5" 35spline.
ARB has an airlocker for to. You can check it out here:
www.arb.com.au/USA_ALAC/ARB_ford_air_locker.htm



Charlo

Originally posted by P|n-BaLL
Thanks for the correction Steve.......dunno why but I apparently brain farted the ring gear size... The part I was confused with...I am VERY familiar with the Dana 70/60 pinion Diam but whats the spline count and size on the Dana 80 pinion? I personally have never had a Dana 80 apart yet...been in those 135's though...derr is some beef;-)

P.S> Ya build Some nice looking diffs......I been following the 6x6 stuff quite closely as I like the axle tech. What I need is sum of dem Moog/9inch combos for my trail rig....... but alas I am too poor and well...me and 9 inchers are a bad combo....lol

NoRM Hey pinball, on that dana 80 pinion it is 37 spline, the same 37 spline on the axles.On those 9'' axles- they can be built to take anything, but it cost a lot of $$$$$$$$$$ to do that. steve differential eng. inc.

Anyone know if the Ford 9" 35spline detriot is the same as the D70 35spline axles??

Originally posted by Rogue Bronco
Anyone know if the Ford 9" 35spline detriot is the same as the D70 35spline axles?? It sure is,35 spline 1.500 o.d. with a 30* pressure angle,I use dana 70 axles in the 9" dt. locker's often. steve differential eng. inc.

Most all D80 will be 10 lug. They will also have a bull gear that connects the axle to the hub. Well at least that is the way the one I have is. It's from a Chevy UCB. Also has disc brakes. Other then that that's all I can tell you about them.

was any of the Dana 70 or 80 a front axle, or were they only rearends?

A buddy has a Dodge D70 front. Closed knuckle, drum brake.
I don't know of any others.

Originally posted by MWellner
was any of the Dana 70 or 80 a front axle, or were they only rearends? Hey MWellner, on those dana 70 fronts, early '60's on up to '78 was the old ball and scoket but around '78, there is a dana 70 open kunckle used in 4x4 fork lifts.The dana 70 front disc brake 10 lug has been used in the ford superduty 1988 to 1997 and chevy 3500HD by tulsa truck and monroe eng. The only dana 80 fronts that have been made use dana 60 components,this a bad idea.Dana engineers warns those not to do this.I have been working on the dana 80 front for two years, and will soon finish the prototype, pics to come soon. steve differential eng. inc.

Thanks for the info

I just came up on a 2k1 D70. It's open, has 4.10's and discs. The downside is that its set up for a dually and has the funky metric bolt pattern. Is it possible to convert it to SRW and the standard 8 x 6.5 bolt pattern? I was thinking about using the hubs off a D70 drum brake setup and some standard 8 lug rotors? Any info is greatly appreciated!:eek:

Hey J-roc, on that rear dually is it a F350?If it is, that is a dana80 with the 170MM bolt patteren.It can be changed to std. 8 lug with hubs from a E350 superduty van, 1997 up. steve differential eng. inc.

I dont think its a D80 cuz it has a 70 stamped on the webbing. I've seen the pumpkins on the D80's and those things are a freak of nature :D As for the hubs, don't ya mean 97 and down? I thought they changed to metric from 98 on up??? Also, are the E350's equipped with drums or discs?

No , on the E350 superduty van it stayed std. 8 lug right up till now. Need the B.O.M. off the tag, it is the second line. steve

Originally posted by J-Roc
I dont think its a D80 cuz it has a 70 stamped on the webbing. I've seen the pumpkins on the D80's and those things are a freak of nature :D As for the hubs, don't ya mean 97 and down? I thought they changed to metric from 98 on up??? Also, are the E350's equipped with drums or discs?

The cover is also diffrent on the 80. Looks like the 60/70 except that it is bigger and streched out taller

OHHH! Man, that's weird. Do I need the hubs off a D70 with discs or will hubs off a drum setup work? Thanks Steve! :cool:

Originally posted by J-Roc
OHHH! Man, that's weird. Do I need the hubs off a D70 with discs or will hubs off a drum setup work? Thanks Steve! :cool: I need that bill of material# I can look it up and tell you exactly what it is. We can get it fixed.

There are actually alot of numbers on the diff. There is a white sticker with a barcode near the pinion. It says~

PN: 6605-1
8N01NA-COOBS

The tag on the diff cover says:

4.10 (upsidedown triangle)1C24NA
606605 1

There are some numbers written upside down on the pass. side tube.

BW31TG251 1A664 1NA

I don't know if that'll help any...:confused:

Originally posted by steve gerstner
I need that bill of material# I can look it up and tell you exactly what it is. We can get it fixed.

Crap :eek: , I just checked out the BOM on dana.com. It's a D70 DRW out of an e350. Hmmm, so that would make it standard 8 lug already. What will it take to convert her to SRW? :rolleyes: Are the DRW and SRW spindles the same? If so, I can just get new rotors and hubs??? :) Or or the hubs dependant on whether it came from discs or drums? :(

I've got a D70 out of an E-350 as well. Wondering what stud bolts I gotta use to convert to disk. I've got disks that are gunna mount to the back of the hub, but need lug bolts with a longer knurled surface.

I took a closer look at the D70 DRW that I have and it looks like it won't be as easy to convert it to SRW. It looks as if the axles may be a tad longer than the SRW because of the hub design. So if I tried going to SRW, it looks as if I'll have to chage the spindles,hub,rotor, and axles~ which isnt too hard, but may be expensive to gather all those parts :confused: Maybe I'll just run the dually look for a while on my 82/93 hybrid Bronc' project and see if I like it or not. :D This truck will be a mud runner/bogger, so I dont know if the dually setup is the way to go? :eek:

whats wrong with 14 bolt

Originally posted by Jeepmangled87
whats wrong with 14 bolt

Nuthin'! I was going to use that, but I got the D70 for free. :D

There is some info on Dana 80 axles in this catalogue. It includes exploded views, bill of material numbers, part numbers. All sorts of stuff for other Dana axles too.:D

http://www2.dana.com/pdf/X510-2CVSP.PDF

Originally posted by J-Roc

I got the D70 for free. :D

http://zillamonster.netfirms.com/truckshow/DSCF0010.JPG

(Bronkzilla) heh? :p

Thanks Raf! Well guys, as you can see, this thing is freakin' wide! In order to convert it to SRW, it looks like I'll have to change spindles, hubs, axles, and find rotors that'll be compatible with the SRW hubs~and still fit in between the brake pads... :confused: :(

Originally posted by J-Roc
looks like I'll have to change spindles, hubs, axles, and find rotors ..............
The spindles are part of the housing, and the axles are the same (I believe). The 'back spacing' ont the hubs are different.
ie. the hub sticks out more on the SWR (if i remember right)

Originally posted by Rogue Bronco

The spindles are part of the housing, and the axles are the same (I believe). The 'back spacing' ont the hubs are different.
ie. the hub sticks out more on the SWR (if i remember right)


Hmmm, anyone know if the spindles are the same? If it's as simple as just changing the hubs, I'll be as happy as a Bronc' in mud :D ; knowing my luck it won't be :rolleyes:

D70 dually, single & van spindles should all be the same.
D70 dually & single housings are the same, van housings are wider.
Not sure about the D60/70, but the dually hubs for a 14B FF make the WMS's about 5" wider than SRW hubs for a 14B. I would think that Dana axles/hubs would be similar.
Anyone know if D60 & D70 spindles are the same??

Hmm, I just pulled the axles off the 2k1 D70 and I counted the splines at 32. The dually/disc brake axle shafts are approx. 4-5 inches longer than the earlier, 35 spline, SRW/drum shafts. Was there a carrier break on the D70's? Are all the spider gears interchangeable?

Originally posted by J-Roc
Was there a carrier break on the D70's?
3.73 & down
4.10 & up

Thanks Rogue! Do you know if the spiders are all interchangeable?

Not sure if they are all interchangable, but I would guess yes. The side gears would differ with spline counts, but other than that, if the tooth counts are the same it should all work out.
Actually they should be the same cause I was talkin to a guy that said he swapped the side gears to the 35spline, and then got the 35spline axles for it.
Altho this is second hand info, I'm not sure myself.

Thanks for the 411 Rogue! :beer: :)