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The front diff I believe is a Dana 44. It has "42513" on the housing and the tag says:
45-11
4.09
The rear diff, I do not have a guess. It has "853" on the top and 42853 towards the rear cover. The tag says:
4.09 FLUA PA
605487-10 LS
The door tag has the code "C5" which I believe is the 4.10 limited slip.
As you can see, the vehicle is stripped down for a major rebuild. I would like to figure out what components it has so I can get any needed parts, as well as identify any potentially weak components as I rebuild this for performance. The E4OD will get a complete performance rebuild, as will the 351. The transfer case is a Borg Warner 1356, which if I understand correctly, should be plenty durable.
The rear diff is a full float, and I would assume that they didn't change it out so it should be a Sterling 10.25, the front I would be more inclined to believe is a 60, since that's what went in the F-350s. Hard to tell from the picture though. You could measure the u-joints in the knuckle, if it's a 60 they should be about 4.40" from outside of cap to outside of cap, if its a 44 they will be about 3.30".
Ok, I found "44 BA526 8" stamped in the front axle tube, so that appears to be a Dana 44. On the front webbing of the rear diff I found "60-150" cast, so it looks like it is a Dana 60 for the rear.
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