which speedo gear do i need - Northern California Ford Owners

This is topic which speedo gear do i need in forum Tech Talk at Northern California Ford Owners .

To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=018740

Posted by v-town50 (Member # 4920) on :

was lookin on 50 resto and they didnt show which one i needed to put 373s in a 90 gt with a AOD. showed 89 but no 90

Posted by jaejae (Member # 7958) on :

since its a aod why not put 4.10's in?

Posted by v-town50 (Member # 4920) on :

its still my daily driver and i commute to richmond everyday so i didnt want to get to carried away

Posted by josesiphone (Member # 8693) on :

i have 4:10 in my vert w/ aod and it's fine because of the gearing is so tall. I go on the freeway at 65 mph at 2400 rpm. AS for the speedo question, you need to know what transmission you have or if you have swapped one from another know what year it came from because it will matter with the speedo tooth gear because they are different and i can tell you which one you need. Steeda has some great descriptions on speedo tooth gears. That's how I learned the differences between them. They are fairly cheap too.

Posted by *Als50* (Member # 6003) on :

Texas mustangs should have it. [Big Grin]

Posted by v-town50 (Member # 4920) on :

well its the stock tranny but ive had it rebuiilt if that makes any difference but il check out texas mustang

Posted by whitelx91 (Member # 8317) on :

i know the 3.73 and 4.10 speedo gears are the same i believe its a 23 tooth gear and as far as the year of the trans goes i dont think it matters cause the speedo cables are the same. Not sure.

SuistangS

Posted by mastercudaz (Member # 7486) on :

The speedo gear is supposed to be the purple one

375-D0OZ-17271-B at Steeda I believe.

As for speed on the freeway, you can use this calculator to check your RPMs

http://www.csgnetwork.com/multirpmcalc.html

Fueled by Ford Mustang Owners
on CaliforniaFords.com