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Old 05-20-2003, 12:07 AM   #1 (permalink)
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what rear dif do I have?

Here's the deal. bought a 65 3/4 ton f250. I thought it had a rear d60, but today I was cleaning and painting I noticed that it has "80" on the top left side "pinion facing me." I have a d44, d30, and d35 that all have their size written in this very same spot.

I know it seems like a no brainier, but would a 3/4 be sporting a d80?

It has 10 bolts and the diff cover measures 12 and 1/8" from top to bottom.
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Old 05-20-2003, 12:23 AM   #2 (permalink)
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It's a 60 with a sloppy 6

This is what a 80 looks like:
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Old 05-20-2003, 12:39 AM   #3 (permalink)
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oh well. It's ok. A 60 is plenty strong enough for my 36" TSL's.
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Old 05-20-2003, 02:24 PM   #4 (permalink)
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Dana 60

Dana 50 through 80 have the same size case, i.e. 12 1/8" wide and 10 bolts. I agree with the others, if it says "80" on the diff that is what you have.
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Old 05-20-2003, 03:57 PM   #5 (permalink)
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my axle does not have that "gear" looking peace behind the ring.
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Old 05-20-2003, 03:59 PM   #6 (permalink)
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Quote:
Originally posted by nathon001
my axle does not have that "gear" looking peace behind the ring.
Your donor didn't have ABS.

Last edited by Oxjockey; 05-20-2003 at 04:30 PM.
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Old 05-20-2003, 04:12 PM   #7 (permalink)
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Re: Dana 60

Quote:
Originally posted by aussielocker
Dana 50 through 80 have the same size case, i.e. 12 1/8" wide and 10 bolts. I agree with the others, if it says "80" on the diff that is what you have.
Not quite. The 50-70 are the same, but the 80 has a taller case, and the bolt pattern looks more like the letter 'D' still 10 bolts, though. You'll also notice that an 80 would be a heavy mother, and I seriosuly doubt you could even pick one end of it up. 60's and 70's you can.

Okay, I thought I had a picture of the housing, but I can't find it.
~John
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Old 05-20-2003, 04:37 PM   #8 (permalink)
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you don't mean the lockright in the carrier do you ??? and If I am being dumb and understand what he is asking what is the notched deal behind the ring gear??
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Old 05-20-2003, 04:42 PM   #9 (permalink)
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It's ABS related. It was answered already a couple posts up.
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Old 05-20-2003, 08:32 PM   #10 (permalink)
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Quote:
Originally posted by TNToy
It's ABS related. It was answered already a couple posts up.

To be more specific, it's an exiter for a sensor that runs the rear abs. Same thing is used in the 10.25 rears.


Also, notice the diffence in shape between that rear and a d60. The 80 cover is taller.
~John
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