Rear end ID needed

[SGT FURY]

Got this homemade horse walker in that I wax going to scrap.
It has a manual trans hooked to a electric motor with a rearend to turn wheel
Has 3.73 stamp on rearend
Kinda looks like 8/34?
Dropout style rearend.
Can anybody ID rearend or trans?

 

[67valiant 100]

Probably a Ford 8in or 9in if I had to guess. Lotta Fords used the 3.73 ratio.

 

[446acuda]

Rearend looks like '49-'56 mopar car. Trans looks a lot like a b body A903 or A745 3 speed

 

[fury fan]

Has what appears to be a square drain plug on it, if that's what it is, that rules out 1965-newer cars (unless someone added it).
Has no pinion snubber, so that's a clue perhaps for whether it's 64-older or a Dodge truck.

The semi-shpere sticking out the back is really rounded, so I would guess it's not 8 or 9" Ford, I thought those were flatter and more ovalled.

It would be interesting to know how this thing was kept lubed. Filled up past the gears with gear lube, or was it heavily greased? Runs at very low rpm so lube requirements are quite different than when used in a vehicle.

 

[66 Monaco 500 365]

Not a ford, 8" or 9", the pinion isn't bolted in to the front of the diff.
Can you get a shot of the casting numbers on the diff?
My $.02