1952-59 Ford Need to Find Out transmission drive gear tooth count for my AOD Transmission

Hi Everyone,


I purchased an AOD Transmission from PATC, almost 10 years ago, I purchased.


https://transmissioncenter.net/shop...-3-dominator-junior-dominator-junior-extreme/


This is the one that I purchased it is a Level 2 Transmission. I am currently building a 1956 Ford Fairlane Victoria 2 DR Hardtop.


I am trying to find out which " speedometer driven gear " to use, and in order to find it.


I need to find out what is the " transmission drive gear tooth count " of my AOD. I could not find it, if any of you has that information could you please help me.

 

What is the gear ratio of your rear axle?

 

Hi it is 3.89:1

 

I got this info below - don't know if it helps. One from a Ford truck site, another from a Mustang site

 

Thank you very much

 

There are several calculators out there for determining which color gear you need. Try this one:
https://www.tciauto.com/speedometer-gear-calculator#FORD

 

I thought PATC had an online calculator, if they still have the CHAT option you might ask them for help. They did list the gears.

 

Yes, they have one as well.
https://transmissioncenter.net/shop/speedometer-gear-calculator/