The Stovebolt Site Forums The Shop Area Driveline Speedometer gear stripped

Doug , Are you able to see into the speedo drive mount hole to count the teeth in the transmission/further check condition? In doing a little research this morning, the only 1954 Chevy trucks that I could find in the Master Parts Book that shows a 4 tooth drive gear matched to a 13 tooth driven gear (what's in your pic) were 3/4 Tons and 1 Tons with either a 4.57 or 5.14 rear axle ratio. Very possible someone stuck an incorrect 13 tooth gear in the transmission, or it could have been from a 3/4 ton originally???

As mentioned above, your gear set should be a 4 tooth drive gear matched to a 12 tooth driven gear same as "Crummy".

Getting to the drive gear requires disconnecting your torque tube and u-joint to get to the transmission output shaft u-joint yoke, unbolting that and pulling from the output shaft. Then pressing off the drive gear from the yoke before reversing the process to put it all back together. That is assuming you have the correct replacement gear set in hand.

If your drive gear on the yoke is still good, you should be able to make use of the driven gear mentioned by "Crummy" above to restore your speedometer function.