Brought Home The Dream: '69 RS Z/28

[cruiserofland]

Pulled the speedo cable today to try to figure out why the speedo and odometer don’t move. Turns out they move just fine with a drill spinning counter-clockwise on the trans end of the cable. The teeth on the driven gear in the bullet insert seem to be intact, so I am wondering if there is a problem with the drive gear inside the tail housing? Looks like the factory-style plastic gear, and maybe a purple color? The yellow driven gear just barely fits through the bore in the transmission so it seems that it can’t be a bigger diameter, so I don’t understand why the teeth aren’t engaging unless there’s a problem with that internal purple drive gear. Hmmmm....

[MarcDant]

Hi cruiser your speedo gear and clip on the main shaft seems like it was installed upside down ,that purple gear should be in line with the hole in the boss. The steel clip that secures the purple gear is offset roughly 3/16. Nice clean z28.

[rlw68]

Originally Posted by MarcDant

Hi cruiser your speedo gear and clip on the main shaft seems like it was installed upside down ,that purple gear should be in line with the hole in the boss. The steel clip that secures the purple gear is offset roughly 3/16. Nice clean z28.

Maybe the clip broke and the gear slipped on the shaft? That would be likely if the speedo was working before. Either way the tail housing needs to come off.