Numbers and letters on TT rearend

[Mark Gregush]

Not up to date on TT rear ends, only have worked on one. Do these letters and numbers have any importance? It is on this TT, about 1923. Was an assembled TT, so There were liberties taken. Not sure what the transmission is from but looks to be turned around. I have not seen it in person just have been asked to help ID some things. Not mine, am asking for a friend. It might be for sale at some point. Oh before you ask if it runs, no it does not and has been stored inside with head off for many years.

[Wayne Sheldon]

I am not sure if it is forwards or backwards? But it is an early to mid 1920s Chevrolet transmission. I have one just like it buried in my junk pile. A lot of them were adapted to model T use because the square input and output shafts were easily adaptable to a model T. Also the output end had a bell to connect to Chevrolet's torque tube, and was close enough in size to connect to a T.
I have even seen a few of these, with an extra Chevrolet bell jury-rigged to the former front of the transmission. Simple couplers can be made to fit the transmission either direction.
The flanges cast onto the sides of the casing are the first obvious identifier. Those were how the transmission mounted in the Chevrolet, but also help make adapting a mount into a T easier. The second identifier is the steel band around the shift tower. It originally held the hand brake, and may have been cut off as was the one on my similar transmission.

I saw one many years ago that had been nicely altered with the second bell, altered output shaft to fit into the T's planetary, and low and reverse gears removed along with the shifting fork and the direct and second caged to not lose the shift lever. The whole thing was very nicely done (back in the era!) to be used backwards as one really tall overdrive! I have always wanted to do that with a TT seven to one rear end as a tall overdrive. But never got to it.

[RajoRacer]

Started out as a 1924 - '25 C-Cab. I'll take a look at my worm drive rear and check for those numbers - most likely factory numbers.

[Mark Gregush]

The story is it was use in the wood for a logging operation. I was thinking the transmission was turned around because the bend in the lever looks factory, don't know if you can reverse the lever or top on them. Also, the end facing the T transmission, does not look like it could be bolted up the Chevrolet bell housing. They might have been going for real low speeds and extra pulling power. Chevrolet is what I was thinking too.