Gear Break In Period

[93tealstang]

White will work, but expect your speedo to become bouncy again in the future when the teeth on it bust off. I've read about guys' who simply keep putting white gears in instead of changing the driven gear. 20 bucks every year or so to keep your speedo correct and steady.....

 

[SteedaGT9150]

White will work, but expect your speedo to become bouncy again in the future when the teeth on it bust off. I've read about guys' who simply keep putting white gears in instead of changing the driven gear. 20 bucks every year or so to keep your speedo correct and steady.....

so what exactly do i have to do then? pardon me for my ignorance, but the pbr;s have kicked in and well you know....

 

[wannabefastfox]

I have a '91 as well and i'm about to put gears in. According to 50resto, you need two gears: a 7 tooth and a 21 tooth. They have the complete kit on their website for $24.99. That will be your best bet.

 

[skunk21]

when I did mine I called ford racing and my buddy at the dealer to double check, they told me red 21 tooth. Mine speedo has been fine and according to those radar stands they put up in the side of the road my speed is correct.

The ford part # is C40Z-17271-A. 50 resto uses the 17271 # out of the ford part # and thier chart shows it for 3:73's and 3:27's.

 

[bentley429]

2 heat cycles hammer down.

 

[SteedaGT9150]

so it looks like red now?

 

[87MustangGT5.0]

If you get red then your gonna have to change that gear in the tailshaft.

 

[skunk21]

here is a chart from ford racing,

http://www.fordracingparts.com/download/charts/142.pdf


83-89 oem t-5 is 7 tooth drive gear

90-95 oem t-5 is an 8 tooth drive gear

&


pre- 1993 t-5 aftermarket are 7 tooth driven.

Take a look at the example on the bottom of the page, the phone # is also listed so you can give them a call if needed, they canb help you out also.

 

[SteedaGT9150]

so next question... how easy is it to change the speedo gear?

 

[Beasty306GT]

I just did mine.....its easy

INstalled

Its on the drivers side ull see it...

 

[SteedaGT9150]

thanks man, pics make everything easier, deffinitely something i can do on my own.

 

[Mustang5L5]

Which gear is easy.

Look inside your trans. If the gear inside on the shaft is yellow, you have a 7-tooth drive gear and need a red 21-tooth speedo gear.

If the gear on the shaft is green, it's an 8-tooth drive gear and you'll need the white 23-tooth for 3.73's.

Up to mid 89 was the 7-tooth and later was 8-tooth

 

[SteedaGT9150]

well i ordered a red, so thats whats going in