This program calculates number of teeth required for the DRIVEN Gear
in 63-67 Corvette Manual Transmissions & most likely other years
(See Information at bottom of page)
Double click on "field" then fill in your values. Then click when finished.
We are working with the following input variables:
Adding teeth on the DRIVEN gear will reduce the speedometer reading (cable runs slower). A one-tooth change results in about a 5% change in the reading. Likewise Subtracting teeth on the DRIVEN gear will increase speedometer readings by 5%.
Using LARGE driven gear with LARGE drive gear will result in driven gear being chewed up.
Using Small driven gear with SMALL drive gear will result in either gears not meshing or erratic speedometer readings.NOTE: If you have SMALL drive gear (1.76) and need to use SMALL gears or LARGE drive gear (1.84) and need to use LARGE gears you either need to pull transmission and replace drive gear or use a ratio adaptor box in-between the transmission and speedometer cable.
© 2007 gbjanssen