The Hudson / Terraplane transmissions were basically unchanged from 1932 through 1940. A column shift was offered in 1939 (I think the "112" still had a floor shift that year), and all Hudsons had column shifts in 1940.

In 1939-40 the circa-1932 transmission received a new cast iron cover which had levers with linkages to the column shifter. The levers were connected to shift forks within the cover, which engaged the gears in the same fashion as the old floor shift lever had in 1932-38.

A completely new transmission was introduced in 1941.

The 39-40 trans. can be fitted to the 36-38 H=T if you have the shift stick and cover from the earlier car.

33-35 T.have a different u-joint yoke,not sure if the spline count is the same. Might have to modify the drive shaft end
at the trans.

Very similar to the 1939 Chevrolet, which had the old top loader transmission with a new cover like the one you describe.

I hope the Hudson top shifter worked better than the Chevrolet. Some people changed 1939 Chevrolet to floor shift because the top shifter was so temperamental.

Come to think of it, all Chevrolet passenger car shifters from 1939 to 1948 could take the fun out of life. Been there, done that.

I learn something every time I come here.

Somewhere I picked up that the 1932-up transmission design was not quite perfected in 1934 "finally got it right in 1938" or words to that effect.

Now I know that perfection in design is not limited to 1938 only, and that the 1939-40 transmissions are also eligible to substitute for 1934.

You can interchange any complete transmission '32-'37, by changing the rear flange. '38-40 transmissions have a finer spline, hence the rear flange will not transplant. Be very careful with all transmissions between '32 and '37 because there are fundamental differences in the shaft lengths, offsets of the shift sleeves, gear widths, circlip grooves, etc. The one thing that will interchange between all models '32-'40 is the input shaft.
Geoff

I read in one of your posts that the 1933 transmissions were not very good - if I remember correctly, Hudson Motor Car Company advised swapping them out for a certain later model.

1933 is uncomfortably close to 1934, which is where I am.

It sounds like too much to hope for, but ----- is there an easy or not impossible way to identify the bad transmissions and/or the good ones ?

Bob, These transmissions have the case part number stamped on the "flater" side. Location varies but all of my "sample" cases had these stamped
numbers .

1933 Terraplane= 42100

1934 H + T = 44158

1935 H = T = 42790
35 and earlier have "flat" u joint flange

1936 /early 37 + 150138

1937 H + T = 154549

1938-39 = 155519

There seems to be some variation in the last digit between parts book #
and the one actually stamped on the case.
If you use the 1st three digits for your ID will be fine.

There you are! The numbers speak for themselves. The '32 and '33 transmissions were different in that they did not disengage the reverse idler, leading to more inertia in the countershaft assembly. Also they had plain thrust washer for end play between the front and rear shafts, and plain bushings instead of rollers. I doubt very much that anyone would have transplanted a '33 box into a '34! It is true, Hudson did not get it entirely right until the 1938 version, which was used for 3 years, and then they went to the single lever synchro-mesh in 1941.
Geoff

I never cease to be amazed at the knowledge that is available to be tapped for the asking on this forum.

I had a doctor like that once. He just knew, and you could find out by asking him, or just waiting for him to tell. He's retired now, moved to West Texas and (I understand) works two days a week.