Dana 70 or Dana 60 Id [Archive] - FSB Forums

: Dana 70 or Dana 60 Id


lightnin
08-08-2005, 11:19 PM
I found a rear axle underneath a 73-77 F250. I don't know how to tell the difference between the two. I don't want to pull it out until I know for sure. I can't get to the axle for the numbers off of it and the tag in the door jam is painted over. Are the D70's that much like the D60's. I have a pic somewhere or I can get a pic. Any help would be appreciated on how to identify it.

MikE2
08-08-2005, 11:26 PM
Its a D60

lightnin
08-08-2005, 11:28 PM
That is what I was wondering. It looked pretty beefy.

Steve83
08-09-2005, 01:25 AM
Click my sig & look thru the Diagrams album.

Shadofax
08-09-2005, 03:40 PM
I found a rear axle underneath a 73-77 F250. I don't know how to tell the difference between the two. I don't want to pull it out until I know for sure. I can't get to the axle for the numbers off of it and the tag in the door jam is painted over. Are the D70's that much like the D60's. I have a pic somewhere or I can get a pic. Any help would be appreciated on how to identify it.

Mikes right. Don't recall seeing any BOM's for D70's with a 3/4 ton truck. But, real easy to tell to confirm....your D60 (mine is from a 77.5 F250 2wd), will have a "60" stamped right on the right side of the pumpkin, toward the bottom, looking at it from the rear.

It might look beefy, until you take a gander at a D70.

MikE2
08-09-2005, 04:44 PM
Yeah they have the numbet right on it. Other ways to tell is, for one, just by looking at it, but if you arent to famillar with what they look like that wont work for you. Another way is the D60 has 3.25" tubes and the D70 has 3.5" tubes (the D70HD has 4" tubes)

lightnin
08-09-2005, 04:47 PM
Thanks for the help guys. Either way a D60 or a D70 is still more durable than the 8.8. I am going to crack it open and see what setup it has in it.

Shadofax
08-09-2005, 05:54 PM
Yeah they have the numbet right on it. Other ways to tell is, for one, just by looking at it, but if you arent to famillar with what they look like that wont work for you. Another way is the D60 has 3.25" tubes and the D70 has 3.5" tubes (the D70HD has 4" tubes)

I love my 60...but actually the tubes are 3.125 :cry if you put a caliper on them. Not sure if all 60's used the same tubing or not. This is slightly less dia. than my 8.8 was (3.25), however (and this is big), it's full float of course, and uses what appears to be 3/8" (.375 wall though this was hard for me to tell, I did the best I could to measure wall thickness after taking out the breather. does not look like it's quite .5", I'm guess 3/8) thick axle tubes vs. the 8.8 .188 wall tubing and 6 plug welds per side vs. the 8.8's 3 (the main culprit with 8.8's spinning tubes). So the housing is very sturdy, just not massive. Whereas the D70 is just outright sturdy, and massive.

lightnin
08-10-2005, 01:05 PM
Is that the same size u-bolt as the 8.8? I can't remember if they are 3.25 or 3.125. I just bought new ones and haven't tightened them down yet.

Shadofax
08-10-2005, 01:26 PM
Is that the same size u-bolt as the 8.8? I can't remember if they are 3.25 or 3.125. I just bought new ones and haven't tightened them down yet.

8.8 is 3.25 60 is 3.125, though I'm not sure if the spring shop actually uses a different bender machine for these. But my stock ubolts were only 1/2" I think, whereas you really should use 9/16 min.

lightnin
08-11-2005, 12:18 PM
Thanks Juice.

lightnin
08-23-2005, 09:09 PM
Well Well Well. I thought it looked bigger than my D60. I pulled the tag and it says 3 54 and the BOM# matches a D70 Rear out of an 1985 F-350

605247 FORD 70 REAR 1985 F-350 CHASSIS - 70U

I can't afford to buy new gears for it. How much is it worth? Would anyone on here be interested in it.

badass1tonf100
08-23-2005, 09:22 PM
lightin where did you get the info to read the bom for the d 70 ???

Larston
08-23-2005, 09:38 PM
Guess I'll post this again so you know for sure what a 70U looks like:

http://www.supermotors.org/getfile/181161/fullsize/D70U-4.jpg

http://www.supermotors.org/getfile/181156/fullsize/D70U-1.jpg

MikE2
08-23-2005, 09:46 PM
I think the D70U is an ugly axle. Sterlings look good, and 14 bolts have a coverplate thats too big. Thats why I have a Sterling axle

Steve83
08-23-2005, 09:54 PM
lightin where did you get the info to read the bom for the d 70 ???http://www2.dana.com/Expert/wc.dll?DSD~demenu~DEMENUA~

lightnin
08-23-2005, 10:11 PM
Here (http://www.onandoffroad4wheeldrive.com/dana_axle_ident.htm)

Here is where I got it from.

the link steve posted says 70R

lightnin
08-23-2005, 10:27 PM
I knew I should have took the camera.

Shadofax
08-23-2005, 10:43 PM
I knew I should have took the camera.


You really should have. Want to see this axle. It's pretty hard to mistake a 60 for a 70 once you have seen them. The 70 is surely bigger, bigger tubes, and less ribbing. See Larston's 70 pic, 1 smallish rib (though thick)? D60 has 2 longer ribs each side. Sorry mike but that is a nice axle in every aspect....smooth as a baby's bottom as it glides over rocks (Larston, did you do any grinding on the bottom?), strong as a rock. The 60 is similar, just not as smooth (and surely not as strong), but still way better than the "rock catcher" (coined by KL? or?) and the potato trench digger (BigNorm called the 14B something like that)...in smoothness underneath, not strength.

BTW, doesn't it have a little "70" stamp on it lower right corner next to the diff, looking from the rear? I believe all 60's do.

Even better to ID is to call up six states...they can contact Dana directly, and have several massive ID books. thats how I confirmed both my axles.

lightnin
08-23-2005, 10:49 PM
I couldn't make out what was on the bottom right of the chunk. Looked like the Spicer Diamond emblem. I have to crawl under to see it. I haven't crawled under from the front to see if it is smooth.

Shadofax
08-23-2005, 10:57 PM
I couldn't make out what was on the bottom right of the chunk. Looked like the Spicer Diamond emblem. I have to crawl under to see it. I haven't crawled under from the front to see if it is smooth.

Here's a pic of my 60, since I need to correct myself...larston's shot was from passenger side. D60 has 1 rib passenger side as well, 2 ribs drivers side, but it surely is not as smooth, and has 3.125" dia. tubes.

http://www.supermotors.org/getfile/195705/fullsize/106_0668.JPG

Rear shot out of truck during buildup (notice the little white line up top...getting ready to drill the hole for the sensor mount):

http://www.supermotors.org/getfile/182215/fullsize/106_0604.JPG

lightnin
08-23-2005, 11:05 PM
Yeah. I have a D60 in the shop that has 4.10s in it. This one looks to have thicker tubes. I am going to take a pic of it tommorrow.

lightnin
08-23-2005, 11:14 PM
Is there any way to tell by the tag if it has a locker. I know LSD have a L in the gear ratio like 3L54. Would lockers be the same? This tag has a space in it. 3 54. but on the bottom right of the tag says LS.

Shadofax
08-23-2005, 11:26 PM
Is there any way to tell by the tag if it has a locker. I know LSD have a L in the gear ratio like 3L54. Would lockers be the same? This tag has a space in it. 3 54. but on the bottom right of the tag says LS.

I know of no factory equipped lockers on older axles. LSD or open

lightnin
08-23-2005, 11:27 PM
Thats what I thought. Would it be best to sell my D60 and put this axle in? Is it that much tougher?

Steve83
08-23-2005, 11:39 PM
Note the caption of the middle axle here:

http://www.supermotors.org/getfile/173615/thumbnail/DanaAxles60-70-80.jpg (http://www.supermotors.org/vehicles/registry/showmedia.php?id=173615&original=1)

That's off the Ford CD. That tells me that you can't ID them visually. Here's another that suggests they're indistinguishable:

http://www.supermotors.org/getfile/72351/thumbnail/D60&70%20SF.jpg (http://www.supermotors.org/vehicles/registry/showmedia.php?id=72351&original=1)

Larston
08-24-2005, 09:32 AM
I think the D70U is an ugly axle. Sterlings look good, and 14 bolts have a coverplate thats too big. Thats why I have a Sterling axle

The true measure of a good axle :rofl:

Larston
08-24-2005, 09:42 AM
See Larston's 70 pic, 1 smallish rib (though thick)? D60 has 2 longer ribs each side. Sorry mike but that is a nice axle in every aspect....smooth as a baby's bottom as it glides over rocks (Larston, did you do any grinding on the bottom?), strong as a rock. The 60 is similar, just not as smooth (and surely not as strong), but still way better than the "rock catcher" (coined by KL? or?) and the potato trench digger (BigNorm called the 14B something like that)...in smoothness underneath, not strength.


No grinding, that's how they come from the factory and why I recommend them so highly. The 70U is the light duty version, but when you see the guts you realize the 60 isn't even in the same league. Fromt the rear, the 70U looks just like a 60 except that the rear flange is bigger than the cover by about a half inch all the way around. The 70U has about the same clearance as the 60, or better, due to the smooth bottom.

D60 to D70 comparison shots. In each of these pics the bigger parts are the D70 stuff.

Carriers
http://www.supermotors.org/getfile/168100/fullsize/119-1962_IMG.JPG

Spider and side gears
http://www.supermotors.org/getfile/168097/fullsize/119-1956_IMG.JPG

Spider gear shaft
http://www.supermotors.org/getfile/168099/fullsize/119-1958_IMG.JPG

Drivers side of D70U
http://www.supermotors.org/getfile/181159/fullsize/D70U-3.jpg

Dana diff comparisons just because I have it handy
http://www.supermotors.org/getfile/168094/fullsize/Differentials.jpg

The D70HD looks almost identical to a 60 from all angles except it's much more massive.

Shadofax
08-24-2005, 12:20 PM
Thats what I thought. Would it be best to sell my D60 and put this axle in? Is it that much tougher?

It's certainly stronger. Main plus in my book that Larston did not show a pic of is D60 30 spline shaft vs. what I think would be D70 35 spline.

issues to consider before deciding:
Are you in the same boat I was needing sensor? Does spicer make a D70 toner, would it be 120 tooth. (I'm thinking they do, but not sure here)

What is the width of the D70 vs your D60?

I would agree with Larston on smooth bottom, but my 60 is within 1/4" clearance of an 8.8. This mainly due to pretty smooth bottom as well, little bit of grinding, and not that much bigger ring gear at 9.75" vs. a 70 which is 10.5"? So I would think you would need to take off some considerable steel to be back down to D60 clearance. But it sure is smooth under there, and that counts for a lot. My 8.8 used to catch rocks at the lip, and I had even done some grinding to it.

What are you matching it with in the front? Part of the reason I went 60 is that it also matches well for use of an 8 lug 44....you can only go so big with that frontend...why bother with a massive rear axle? I am probably at my end already with 37's. If you're going 60 up front, I say 70 rear is better choice.

If you're going tires bigger than 38's, I say D70.

Spring perch width?
length of pinion snout...have to shorten driveshaft?

just some thoughts.

lightnin
08-24-2005, 12:27 PM
Thanks Juice.

Don't need a Tone Ring.
Haven't determined width yet. It is in a 75 truck that has SRW and it lines up with the front width.
I am going D44 8 lug outters. Eventually going to a D60.
My drive shafts are already going to have to be altered. Mainly cause of the 205 swap.

Do the 75+ trucks have a wider frame then the 80's? I wouldn't think so cause of 9" swaps but I don't know for sure.

Main reason is it is cheap, Beefy and a D70.

Thanks for the help Juice.

Shadofax
08-24-2005, 01:00 PM
Thanks Juice.

Don't need a Tone Ring.
Haven't determined width yet. It is in a 75 truck that has SRW and it lines up with the front width.
I am going D44 8 lug outters. Eventually going to a D60.
My drive shafts are already going to have to be altered. Mainly cause of the 205 swap.

Do the 75+ trucks have a wider frame then the 80's? I wouldn't think so cause of 9" swaps but I don't know for sure.

Main reason is it is cheap, Beefy and a D70.

Thanks for the help Juice.

I would just compare the width to the 60 you have. but from the sounds of it, the 70 is probably the better deal for you.

MikE2
08-24-2005, 03:01 PM
Good pics there Larston

lightnin
08-25-2005, 10:02 PM
Here she is.

http://www.supermotors.org/getfile/238176/fullsize/100_1598.JPG

http://www.supermotors.org/getfile/238181/fullsize/100_1603.JPG

http://www.supermotors.org/getfile/238180/fullsize/100_1600.JPG

Here is the Dana Diamond where the 60 is on a D60

http://www.supermotors.org/getfile/238178/fullsize/100_1602.JPG

Shadofax
08-26-2005, 12:54 PM
Have you popped the cover yet?

lightnin
08-26-2005, 12:55 PM
Not yet. May I ask why? Are you just wondering or should I be looking for something else?

lightnin
09-22-2005, 09:12 PM
Finally got around to popping the cover. It is 3.54 gears but it has a two piece carrier. I believe it is a power-lock. Does anyone have a pic of one? It doesn't look like the carrier in the pics above. Going by the tag it should be open but since this was pulled out of a diff. truck and swapped in, they could have swapped in a diff. carrier.

lightnin
09-22-2005, 09:17 PM
Here's a picture of the carrier that I found on Ebay. It looks just like it.
Ebay (http://cgi.ebay.com/ebaymotors/New-Dana-70-powerlok_W0QQcmdZViewItemQQcategoryZ33731QQitemZ80 01983031QQrdZ1QQsspagenameZWDVW)

From the looks of it, I'm going to go ahead and keep this axle.
Thanks for the help yous guys. :twotu: