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I have a 1940 110 differential at my shop but it's tilted - that is, the surface where it attaches to the axle housing aims upward in relation to the input. None of my other 1940 110s had this tilt and as I recall my 1941 120A did not either. Does anyone know why the difference?

It seems that with the tilt, the body could be lower so was it a late model-year change? One of mine was indeed a late model but not sure if it's where this differential came from. It was pulled from the car back in the 1960s before it was even quite an antique but that doesn't mean that it hadn't been changed at some point so was that style used on a different year perhaps?

The axle housing was, of course, tilted to match so the driveshaft was still inline but lower at the rear.

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Don, that's an "Angleset" differential, the design dates back to the late 1920s, long before the "110" was introduced. I wasn't aware that style of differential was still in production in 1940.

I pulled it out of the car myself, which was 1940 110 Sedan but it could have been changed at some point with an earlier one. Next time I'm at my shop, and if I can get at it, I'll check to see if there are any dates or casting numbers that might help.

Don, that picture really helps. I see what you are saying now and can visualize how the drive shaft would hook up to it. Not what I had perceived from your verbal description, (my fault) All I was saying when broaching the U-joint-angle issue was that in any flexible drive-link, where either the initial points of connection are not on the same plane, or through torque flexing, that angle changes, the 'at rest' chord line should be as fair as possible to alleviate undue torque and 'knuckling' wear on the universal joints. Chris

I had always seen these in the Packard section of my Motors manual but never seen one for real. My book covers 1935-49 cars. Not sure which years used it though. They show 2 made like this one for the 110 and 120 and the other for the senior Packard.

The last year for the angle set differential in the junior cars was 1937, so the complete unit must have been changed in your 1940 110

Thank you to all! The help is appreciated.