My 59 SM420 transmission is missing the speedo drive gear and Carter has some. I know the axle ratio but how do I determine the number of teeth on the speedo drive? They say they need that info to matchup to the bucket of used ones. Its 3:90 diff.


~ Rasman
1971 Chevy C10
"Old Yeller"
Saga: "'Old Yeller' ... More than a Pristine 1971 Chevy"
1959 Chevy 1/2-Ton
In the Legacy Gallery