Speedo Gear

[dcurtis]

Alright, a few years ago i upgraded to 3:73 rear gears with an aod, I installed a mighty mite c4 last year, will the same speedo driven gear work in this transmission or will it be a different count, I had the white gear, unsure on the count off my head but it was pretty close with the aod, I called dynamic and the rep literally said I don’t know, crawl under there and count the teeth inside transmission, do they use different counts ? I may just order the kit that has all counts in it and trial and error it, don’t feel like crawling under there and counting, car is low and hard to see in there lol

 

[Mustang5L5]

They can have either a 7 or 8 tooth drive gear. Unfortunately the rep is right, going to need to shine a light in and take a peek.

I don't know your tire size but you can plug in your specs for both a 7 tooth and 8 tooth drive gear and order the two gears (or one if you already have one of the recommended gears) and try them both.

https://lmr.com/products/Mustang-Speedometer-Gear-Calculator