So it looks like you have a Dana 44.
1953 onward XK120 folks…when you can…please have a look at your differential…from the back…looking …I am soooo curious if any car has this: cast raised US PAT 2018188, on the leftside lower flange next to pumpkin case (easy to see), and above that, on the upper flange, (harder to see) facing rear is US PAT 1968618., and…a small cast raised circle with letter “A: within followed by cast raised “44” on lower right rear face. Interested if…an original factory install , maybe Leys ran out of dif…
Now we have better confirmation.
The Salisbury axle originated with Charles Salisbury of Jamestown New York
in 1901. Clarence W Spicer, inventor of the Hardy-Spicer u-joint, partnered
with George Dana and acquired Salisbury in 1919.
When last I checked we are still looking for a Dana equivalent of the 2HA for those of us that have them.
Now that I look at these patent drawings more carefully, I see that they are not hypoid axles, they are an earlier version called spiral bevel, where the axis of the pinion gear intersects the axis of the crown gear.
