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Good eye cbrown. The two differentials shown in this thread are completely different.
That last set of images is definitely an open differential with much weathering on the ring gear flange end. The first image in this thread showed an obvious (seems to me anyway) Dana brand limited-slip differential with more oil and a clean flange end. They're two different beasts it seems.
So what's the story on both sets of pics Schneiders? Both from your rig? One front and one back? Or were you just showing a differential that you were shown by someone else?
Oops. The photo I posted was the front end Dana 44 made in 1977 4.09. It's mounted on the 1971 F250 4X4 Frame that I am going to use for a four wheel drive coversion. The 1977 is being used for the disk brakes. My apologies. Definitely not limited slip. That's a good catch. Interesting about the weathering on the ring gear flange end.
I haven't picked up the chassis yet from the seller, so I'm just working off the photos I was sent.
Here is the right photo for the rear end...
Trying to determing what type of limited slip without being able to see the rest of the numbers. Made in 1971, same year as the frame and the transfer case. It looks like it has the same setup your called the clutch pack as the first photo in this thread, the well oiled one. I'll see if I can get some more photos of the other markings and post them. Or take some after I get it up here. Then I can look things up in the catalog.
Do you think the weathering on the front differential ring gear flange end will be an issue cleaning up?
Here the setup showing both the front and rear differentials, and the disk brakes on each...
Frame 1971 F250 High Boy with 4 Bolt Steering Box Modification
Rear End 1971 Dana 60 Limited Slip w/GM Chevy Disk Brakes
Front End 1977 1/2 Dana 44 Open Knuckle High Pinion w/Factory Ford Disk Brakes
Transfer Case Dana 24 1971
Thanks for the info on the 70s to 80s GM Front Calipers being used on the rear.
I was wondering about the parking brake issue. I read that I could use the caliper from an Eldorado and use the existing mechanical emergency brakes pedal and cables. I'd like to keep the same setup in the cab and cables and not covert to another type of system. Will need to figure that out as I get further along. I'd like to do the disk brakes, but I'd rather go back the the drum brakes if the emergency cable is not going to work.
Would the limited slip in this case still be either a Powr-Lok or Trac-Lok? Or it is just one of these? And what is the difference between the two of these, or a locker?
Interesting about the weathering on the ring gear flange end.
Do you think the weathering on the front differential ring gear flange end will be an issue cleaning up?
Nope. Not an issue unless it extends throughout. The edge flange is not any kind of a mating surface or anything like that.
Originally Posted by SchneidersFords
Trying to determine what type of limited slip without being able to see the rest of the numbers.
Is it more of a curiosity at this point, or are you thinking of rebuilding it and need to know what you have to get parts?
I'm actually surprised someone didn't know off the top of their heads just from the first view, but I'm sure you'll find out at some point.
For a definition of what a LS is, and the difference between a Power-Lok and a Trac-Lok, read pages iv and v in the front of the catalog. For the 71-72 BOM applications, read pages 94 and 95.
This was more of a curiosity to figure out what I have and confirm it is limited slip. Looks like it is and I have a better idea how it works now. Thank you.
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