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phil, Chevy Mechanic
Category: Chevy
Satisfied Customers: 269
Experience:  20 years experience
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Change the speedometer drive gear on a chevy trubo 350 transmission?

Customer Question

How do change the speedometer drive gear on a chevy trubo 350 transmission?
Submitted: 8 years ago.
Category: Chevy
Expert:  phil replied 8 years ago.



Follow the speedometer cable to the transmission and locate the speedometer gear housing it is attached to which looke like this



there should also be a housing retainer which looks like this



Remove the houseing and the gear will be inside which looks like this



The color of the gear tells you the number of teeth and allows you to calculate the ratio. If you need ratio calibration help please just let me know