Obsol3te

For those of you who are always asking what speedometer gear you need for your new rear end gears.
Here's a list of the following gears and speedo gear colors Compliments of Roundman

1983-89 manual 5 spd speedo gears
3.27-19 tooth-pink
3.55-20 tooth-black
3.73-21 tooth-red
4.10-23 tooth-white

1990-1993 manual 5 speed speedo gears
3.08-20 tooth-black
3.27-21 tooth-red
3.55-23 tooth-white

1984-1989 automatic AOD speedo gear
3.27-19 tooth
3.55-20 tooth
3.73-21 tooth
4.10-23 tooth

1990-1993 automatic AOD speedo gear
2.73-19 tooth
3.08-20 tooth
3.27-21 tooth
3.55-23 tooth

Casper98GT

Thanks Kyle, they have one for all years on steeda.com. lol

Obsol3te

Yeah, but people always ask so I thought this would be easier.

NegadivOne

yeah this will definately help out a lot of people. not everyone knows what websites to go to to find out.

furrelkt

Hey Guys i had this saved since i been thinking of the same questions in my research..

http://steeda.com/store/-catalog/speedometer.htm


Keri

Stinger

Hey how about 3.73 for a 5 speed /1991?LOL

Fishhawk

Unfortunatly theses number aren't always that accurate. I installed 3.55 gears on my 85 GT with 5-speed and 225/60R15 tires. All the web sites called for the 20 tooth gear for my car. On the highway I felt I was moving slower then my speedometer was telling me. I had a local cop hit me with his radar and my suspisions were corret. I was on average, 5 MPH slower. I put in a 21 tooth and now my speedo it accurate.

Demon_Mustang

Ok, I am about to swap my AOD for a Cobra-Spec T-5 transmission off a 1993 Cobra. That means I have the stock auto rear-end of 3.27:1 diff i think, but the transmission is the Cobra-Spec T-5, not the standard AOD/3.27 combination. What would I need to buy for that?

Thanks.

BlueDemon

Thank-you for posting that Obsol3te, I just recently purchased 3.55 gears for my 88 LX 5.0. and called several local Ford dealers about what speedo gear I would need to put in. They couldn't tell me because they said their books didn't go back that far. That was a great idea that you posted that!! By the way do you or anyone else know what gears were standard in that year? Does it matter that it was a patrol car at one time? Thankyou ahead of time for any help you can give me!!!

import slayer

I found this site that might help too:

http://www.buicks.net/shop/speedo.html