Pre 68 Dave.....your post solved my issue because you listed all the parts that would be inline to secure the drive gear in place and that all is held tightly together with that bolt. I had presumed that the drive gear was supposed to press on to the main shaft and could not figure out why it just slid on...........a special thanks to you...

1953 chevy 1/2 ton with 3 speed 318 on floor and 1955 235 engine