Most common use was under 3/4 ton pickups with 8 hole wheels, probably came out around 67 or so I would guess. I am not sure when Chrysler started using them but a few 67 Ford F-100s had the Dana 60 with the 5 on 5 1/2 patteren.
It came out in 57. Most were under 3/4 ton pickups as mentioned.International used some in 1/2 ton pickups with a 5 1/2" bolt pattern. The ones in the 1/2 ton Fords were 44s, also a good rear, with posi, but not as strong.Mopar used them in some Hemi and 440 cars in the late 60's Early ones have a different axle spline count than later ones, it changed in the early 60's
Ford did use the 44 too but as I said some 67s ( I think V8 4 speed ) came with 60s. You can see pictures of some on FORDificationd that my good friend Keith owns.
<font color="green">I've also been told that some older Volvo's ahd Danas in them. Anyone have some facts on that? RASHY </font>
Volvo used 44's in the 50's and 60's The later ones are still Danas, but model 40 or something like that. Same basic rear as an 8.8 ford rear.
Would the ones in Jeeps be the larger 5" pattern? The CJ5 I had had 44's front and rear with a large bolt pattern. Jay
Later Jeeps had a 4 1/2" bolt pattern. Most of them are Dana model 36 anyway. Scout used a 44 with 5 1/2" pattern, about 57" overall width.
The 2wd postal Jeeps used a 44 too I think. IMO 44s are wimpy, I wouldn't even consider trying to pump more than a couple hundred horse through one.