[68stangbeast]

Need the help asap, got a AOD and I'm putting 3.73 in my rear end, do I replace my speedo with a 21 Tooth Purple or a 23 Tooth White speedometer?

 

[spdjnky_42]

23 tooth auto gear.

 

[FoxChassis]

Your combo, assuming your tires are same height as original, calls for a 24T gear. A 23T gear is as close as you're going to get.

Hope that 23T gear does not get chewed up and circulate plastic bits throughout your transmission.

 

[68stangbeast]

Where is the best place too get a 23 tooth auto speedometer?

 

[Guest]

Where is the best place too get a 23 tooth auto speedometer?

Speedometer Recalibration Gears - '79-'98 Ford Mustang

 

[68stangbeast]

392-STE-17271-J
Automatic 8-Tooth 3.73 Ratio / Black 23 Speedo Gear

This is the one im looking for right?

 

[Guest]

392-STE-17271-J
Automatic 8-Tooth 3.73 Ratio / Black 23 Speedo Gear

This is the one im looking for right?

Yepper.............

 

[spdjnky_42]

+1......If you ever have your trans rebuilt swap to a 7 tooth drive gear, the 23 tooth speedo gear will not last long......................