I am trying to assist another gentleman get his '37 1/2 ton back on the road. The transmission that was pulled out of the truck has casting number 590874 on it. A 3 speed car transmission in a truck?

I took one of my spare 4 speeds to the shop working on his truck and they are claiming that they can't get the transmission into the truck. Something about the input shaft being different.

Is there anyone more familiar with the car running gear that can help us sort out what we need to do to put a 4 speed back into this truck?

Does anyone have a 3 speed they are looking to part with?

Thanks for the help,

~Justin

1937 Chevy 1/2-ton
"Wylburr Clyde"
In the Stovebolt Gallery
More pictures on Google

My Grandfather bought it new and Dad drove it through highschool. The 3rd & 4th generations put it back on the road on 8/8/2015!