After38Years

1966 L79 Muncie 4 spd

My speedometer has a problem which is either in the cable, the speedometer itself or both. The speedometer was off and erratic, and now the cable is making a racket. I'm not going to be able to work on the car until warmer weather, so I'd like to disconnect the cable at the transmission, remove the driven gear and plug the hole. I'll use my GPS or the tach to determine speed.

Can anyone recommend a method of doing this? Is there a handy aftermarket part for this use?

Thanks

Frankie the Fink

I'd try lubing the cable first.

If you are hell bent on disabling the speed then maybe take off the cable and pull the core out and reattach the empty housing at the tranny ? Once you take things apart later on, if the cable is worth keeping, you can snake the core back in off the car and lube it...

rongold

The problem with that, is that the cable comes out from the top end, not the bottom.

Frankie the Fink

maybe that won't work then. I didn't remember.

rccarson

You can remove the drive gear and reinstall the cable to seal the hole.

After38Years

Thanks for the help guys! So as I understand it, I can remove the gear, then re-attach the speedo cable and the cable core will not slide down and get into the transmission housing.....

rccarson

You might want to pull on the cable to assure that the cable is still intact. It should not pull out if it is intact. If it does pull out you can remove it and re-attach housing to transmission.

Plasticman

Just don't drop the gear in the trans...........

Plasticman

After38Years

Bad thought

It's too cold to crawl around on the garage floor today, so I won't be able to mess anything up for now...

vettsplit 63

I had the transmission out of my 63 like 3 times fixing leaks, and a condition where it 'scratched' going into 2nd. After replacing second gear, all the synchros, new slider hubs, new seals, and running the correct amount of fluid in the trans, I still had a noise at the speedo/cable head. Turns out I had secured it in a bind at the steering column on the outside. I readjusted it and now everything is quiet, and no 'jumping' on the speedo. Just a thought.

plaidside

If you just remove the gear there is a chance for a leak.
The gear housing has a seal at the end which the plastic gear goes through and prevents gear oil from leaking out and possibly up the cable and then onto your leg.
You can remove the gear and housing and then use a Dorman 7/8 expandable plug.
http://www.dormanproducts.com/p-1589...origin=keyword
Joe

sfbrown51

Turn your heat up!!!!