1963/67 Corvette Speedometer Tips

The importance of installing steel worms vs plastic when rebuilding


Because of the way the speedometer was designed with the trip odometer and the total odometer across from each other instead of over the top of each other, there is a lot more torque required to turn them causing them to quickly strip out the 2nd and 3rd plastic worms that are used in many of the GM speedometers.

Therefore, when rebuilding for th3 63/67 year speedometers, it is imperative that steel 2nd and 3rd worms are used. Also, when replacing the 2nd worm on the ‘63/7 speedometers with steel, the magnet 1st worm has to be replaced too because it is worn and will cause it to cease and snap the cable.

Brian grace

Have 63 vette speedometer / odometer # are not lined up speedometer jumps around have already replaced cable and the gear in trans do you think problem is in the speedometer ??

patrick@dandmrestoration.com

I would suggest calling us at 1-800-722-0854 and ask to speak to one of our techs who could help you troubleshoot this.

John Anderson

I have a 67 corvette that the odometer and the trip meter are not working.

Wondering if I purchased the needed parts from you, if I could replace them myself? Don’t know if this is a DIY type repair or if I would be better off send the cluster in to be repaired

patrick@dandmrestoration.com

I would suggest calling us at 1-800-722-0854 and ask to speak to one of our techs who can help you.