Which speedo gear w/ AOD/3.73s

[Chris6050]

My dad is going to be putting in 3.73s in his 90 GT AOD. Which speedo gear should he use? He was going to order one from 5.0 resto but for the 90-93 AOD's, they only list up to 3.55s Thanks.

-Chris

 

[jtstang89]

I believe its the 18-tooth speedo gear...someone will correct me if I'm wrong. Good luck!

 

[myroc]

23 tooth gear is what your looking for.

 

[jtstang89]

23 tooth gear is what your looking for.

sorry about the previous post by myself...I knew that 4.10s required the 23 tooth gear, and I just assumed that 3.73s would need a step down...

 

[TRWXXA]

My dad is going to be putting in 3.73s in his 90 GT AOD. Which speedo gear should he use? He was going to order one from 5.0 resto but for the 90-93 AOD's, they only list up to 3.55s Thanks.

-Chris

The 5.0 Resto catalog is wrong. Not sure why.

If you have stock sized tires and an AOD (8-tooth drive gear), you need a 23 tooth speedo gear. Your speedo won't be right on, but it'll be close. If you had 26.7" tall tires, it'd be just about perfect.