What type of 1957 transmission?
The u-joint yoke that fits into the torque-tube does not have the speedometer gear on it.
The 3-speed and 4-speed yokes are different.
I should clarify things. Its an SM420. The yoke that bolts to the tranny shaft is what I have and it does have the speedo gear. The yoke I need is the slip yoke that slides on the propeller shaft inside the torque tube. I am thinking that yoke may be the same between the 3 and 4 speed and possibly similar year cars. As far as I know but could be wrong there is no difference in the axle in a 3 speed and 4 speed 3100. If the axles are the same that rear slip yoke should be the same as well. It might be a stretch to think a car yoke may fit but I think its possible.
