Speedometer Correction After 3:73 Gears

[particleman03]

I just installed 3:73 gears in my 96 GT. Seems the Speedo is about 15-20 MPH off at speeds of 55-75. Any quick, cheap fixes known would be greatly appreciated.

 

[timeless2]

Search this forum before posting.

 

[Kilgore Trout]

Hmm, I think for the 96 he has a mechanical speedo so he will need to change the gear that drives it? I think...

But yeah, a quick forum search should reveal a wealth of info on this topic.

 

[particleman03]

Mechanical Speedo, YES

It is a Mechanical Speedo. Not Digital. Where is the Gear? to correct this?

 

[four.six]

just get a tuner and be done with it.

 

[timeless2]

Hmm, I think for the 96 he has a mechanical speedo so he will need to change the gear that drives it? I think...

You might be right. Best to check at the Ford Parts Counter.

 

[timeless2]

Found the site where you can get a gear for it. Clicky.

 

[Kilgore Trout]

just get a tuner and be done with it.

Once again, it is a 96...

 

[03ghoststang]

it should be the drive gears at the tranny that should be changed for those years i don't think that a tuner would do it

 

[LI98GTStang]

A more accurate way to correct the speedo can be done with a speedcal. Don't believe a chip can correct on '96-98 model years.

http://www.brothersperformance.com/shop/mustang/brospeedcal.html

 

[forpit2000gt]

replace the gear. should take 5 minutes.

 

[particleman03]

Fantastic, Feedback, Thanks All

Fantastic, Feedback, Thanks All

 

[forpit2000gt]

BTW, my local Ford dealership is where I'v picked them up. If not in stock , usually a day. Check yours.

 

[squares98]

kinda late but 23t speedo gear or a speedo calibrator are your only options

 

[nex2nutin]

It is a Mechanical Speedo. Not Digital. Where is the Gear? to correct this?

You can order the correct speedo gear from steeda or ford racing its about $20 for the gear and i believe it's located on the side of the tranny. Its a lot cheaper than a tuner.

 

[o0akoni0o]

i thought that anything higher than 3.73's couldn't be fixed, or is that with 4.10's? oh and wouldn't he have to change a gear in the tranny as well?

 

[forpit2000gt]

You can order the correct speedo gear from steeda or ford racing its about $20 for the gear and i believe it's located on the side of the tranny. Its a lot cheaper than a tuner.

5.0resto has them for 7.95.
3.73 is 21 tooth gear

 

[squares98]

23t for 96-98 t-45

 

[o0akoni0o]

so wouldn't he need to change out the drive gear as well?

 

[Pughman]

i got the gear in mine ... been there for like 6 months now ... its still 5 mph off ..i dont think there is a 100% fix for this ..