C4

[oldgasser]

I have a C4 transmission in my 57 Ranchero & the speedometer needle started to fluctuate and more so at lower speeds anyway I removed the speedo gear ( plastic) from the transmission & noticed the teeth were worn does anyone know of a supplier for the speedometer gear?
Thank you for your time.
Oldgasser.

[John Palmer]

Drive gear worn a little?  Or completely worn off?

If they are slightly worn it's normal, and the usual fix for a bouncing speedo needle was to pull the cable loose at the speedo end and grease the inner cable.  The thickest wheel bearing grease works just fine on a speedo cable.

Also the drive gears came in different colors which denoted different tooth counts for different ring and pinion ratios.

[lalessi1]

I think these guys might be able to help...

http://www.manta.com/c/mx2g5tr/american-hot-rod-solutions

[57chero]

Go to Dallas Mustang parts and put speedometer gear in the search box, they have a good selection most of the early mustangs used the C4 trans.

[thomasso]

Wheel bearing grease may be fine in California.  If you live anywhere where the temperature gets below 60 you'll be sorry. Lubriplate assy. lube works well in colder climates.