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Unread 10-16-2013, 08:58 PM   #1
sammy12oz
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Is this an 8.25 rear end?

I purchased a rear end tonight. I was told it was a 97+ 8.25.
After getting it home I check the tags. One is stamped 35 and the other 2546.
I'm assuming this is in fact a Dana 35 with that tag.
The Axle tube is 3", I read in a thread here that the 35 are 2 3/4" while the 8.25 are 3".
I'm not sure and was hoping someone here could help me out.
I paid 100 for it.
Thanks

20131016_203948.jpg  
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Unread 10-16-2013, 09:03 PM   #2
sjones26573
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That's an 8.25

EDIT:
For your future reference:
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Unread 10-16-2013, 09:20 PM   #3
sammy12oz
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Thanks for the quick response. That puts a smile on my face. It turns out that my 2000 already has the 8.25 rear. Maybe I'll take it apart and get a better understanding of how these things work. I also got the drive shaft with it so at lease I have a spare now.
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Unread 10-17-2013, 06:23 AM   #4
cruiser54
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Originally Posted by sammy12oz View Post
Thanks for the quick response. That puts a smile on my face. It turns out that my 2000 already has the 8.25 rear. Maybe I'll take it apart and get a better understanding of how these things work. I also got the drive shaft with it so at lease I have a spare now.


http://www.howstuffworks.com/differential.htm
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Unread 10-17-2013, 07:20 PM   #5
miceanic
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Sounds like you might want to read up some on axles. You did not realize you had the same axle already so I have to assume you did not check to make sure it was the same gear ratio. More than likely it is 3.55 but some XJ's also came with 3.05, 3.55, 3.73 and 4.10, it is important that both front and rear match or your transfer case will grenade itself. You could also use one of the shafts out of that axle as a spare. I believe they are the same length, I would double check as I have a Dana 35 still.
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Unread 10-17-2013, 09:13 PM   #6
um7267
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the housing is flat on the bottom of the c8.25 that is the easiest way to id them
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Unread 10-19-2013, 01:27 PM   #7
stephenfarris
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Originally Posted by um7267 View Post
the housing is flat on the bottom of the c8.25 that is the easiest way to id them
And that rubber stock fill plug are two dead give-a-ways
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Unread 10-19-2013, 01:34 PM   #8
CJ7-Tim
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Originally Posted by stephenfarris View Post
And that rubber stock fill plug ....
Later Dana 35's also use the exact same plastic diff cover plug.


The best way to identify an axle housing, is by the shape of the housing itself and the size/shape of the diff cover. See picture above.
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Unread 10-19-2013, 09:22 PM   #9
sammy12oz
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Quote:
Originally Posted by miceanic View Post
Sounds like you might want to read up some on axles. You did not realize you had the same axle already so I have to assume you did not check to make sure it was the same gear ratio. More than likely it is 3.55 but some XJ's also came with 3.05, 3.55, 3.73 and 4.10, it is important that both front and rear match or your transfer case will grenade itself. You could also use one of the shafts out of that axle as a spare. I believe they are the same length, I would double check as I have a Dana 35 still.
Agreed, I mistakenly assumed the piece of metal stamped with "35" meant it was a dana 35.
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Unread 10-20-2013, 03:19 PM   #10
um7267
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Quote:
Originally Posted by CJ7-Tim View Post
Later Dana 35's also use the exact same plastic diff cover plug.


The best way to identify an axle housing, is by the shape of the housing itself and the size/shape of the diff cover. See picture above.
unless the plug is the original it will say C8.25 or DANA35
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