[GAccomando]

I believe I have a M-20 in my 67' Still decoding, but I need the new plastic gears inside that control the speedo cable. Both are so worn the speedo is jumping. Can someone recommed a good site for parts, and the proper name for the part?

Thanks as usual. G

[Everett#2390]

Here's a start: I received a manual from Jody's Transmission
Circle gear for the shaft, pencil gear for the speedo.

[norcal_68]

There is the Speedo drive gear that is on the shaft and then there is the speedometer driven gear which you can pull out and sits in the bullet/housing which is attached to the cable.

Here is a good resource: http://chevelleengineer.home.comcast...eer/speedo.htm

The speedometer driven gear comes in different sizes depending on rear end etc. You can get that from local Chevy dealer, I got one in a day.

Originally Posted by GAccomando

I believe I have a M-20 in my 67' Still decoding, but I need the new plastic gears inside that control the speedo cable. Both are so worn the speedo is jumping. Can someone recommed a good site for parts, and the proper name for the part?

Thanks as usual. G

[norcal_68]

Here is the gear that sits on the shaft:
http://www.thegearbox.org/catalog/it...82/3547889.htm

Here is the driven gear that sits in the housing that connects to speedo cable.
http://www.thegearbox.org/catalog/it...82/3697857.htm

[JodysTransmissions]

Make sure use the correct speedo driven gear with the correct OD corresponding speedo drive gear for longevity.