Can anyone tell me what speedo gear I need?? I am not sure on my tranny gear wether it is 7 ot 8 tooth. It is a T5Z FMS 5 speed. I have 285/40/17 tires on the rear and 3:27 gears. My speedo is way off, I can be on a 70 MPH road and when the speedo reads 70 I am passing other cars like they are sitting still.
What speedo gear?
- Thread starter 1993SSP
- Start date
skunk21
Active Member
The T5Z and pretty much all after market T5's have a 7 tooth drive gear and you need a pink speedo gear (19 teeth).
http://www.fordracingparts.com/download/charts/129.pdf
83-95 Speedometer Driven Gear & Clip Kit, 19 Tooth. Manual Transmission at LRS - Same Day Shipping!
http://www.fordracingparts.com/download/charts/129.pdf
83-95 Speedometer Driven Gear & Clip Kit, 19 Tooth. Manual Transmission at LRS - Same Day Shipping!
Thanks, I'll have to order one, I need a new throttle cable and clutch cable, the price on the throttle cable is insane!! $99.00, I about fell outta my chair!
I did the math with the conversion calculator and came up with 17.76, my 285/40 tire shows 776 revs per mile, I am guessing I should round up and go with a 18 tooth
I did the math with the conversion calculator and came up with 17.76, my 285/40 tire shows 776 revs per mile, I am guessing I should round up and go with a 18 tooth
I can save ya $15-$20 on that. I have a pink 19T gear sitting on my desk. You can have it for free just PM me your address and I will throw it in an envelope on Monday with a few stamps and send it to ya. 
Forgot what it came out of, pretty sure it was my 92. Its in perfect shape though with no wear.
Forgot what it came out of, pretty sure it was my 92. Its in perfect shape though with no wear.
Check this out: Calculators
It showes 17.7 teeth. So a 17 tooth will read just a hair (1-2MPH) faster then you are going and a 19 tooth will be a few MPH under reading.
Ill just send ya both and you can try it out. What I did was use a portable GPS to confirm my speed. Barring that just have a friend in a new unmolested car get to 60MPH and tell you when they are at that speed so you can see how close you are.
I better send it from the post office to make sure I put enough postage on it.
It showes 17.7 teeth. So a 17 tooth will read just a hair (1-2MPH) faster then you are going and a 19 tooth will be a few MPH under reading.
Ill just send ya both and you can try it out. What I did was use a portable GPS to confirm my speed. Barring that just have a friend in a new unmolested car get to 60MPH and tell you when they are at that speed so you can see how close you are.
I better send it from the post office to make sure I put enough postage on it.
From what I could dig up my tires have 800 revs per mile. I came up with 18.31, The 19 tooth will have me close enough, definitely be a whole lot better than 10 or 12 mph off.
I will do that with the GPS to confirm it. Once I get the gear installed.
I will do that with the GPS to confirm it. Once I get the gear installed.
Chrome_Rust
Member
In these times "Pay it forward" is all some of us can do. It's good to see people helping others out!
thumbs up guys!!
oh.... btw...
In my car since I did the SN95 dash, I used the cluster from a 95GT. Since I am using the stock VSS for the speedo, will it be off if i get the correct driven gear for my T5? (i am going to run 255/40/17's and 3.73's and the current trans is a 4cyl T5, says I need a 21 tooth gear) thanks!
thumbs up guys!!
oh.... btw...
In my car since I did the SN95 dash, I used the cluster from a 95GT. Since I am using the stock VSS for the speedo, will it be off if i get the correct driven gear for my T5? (i am going to run 255/40/17's and 3.73's and the current trans is a 4cyl T5, says I need a 21 tooth gear) thanks!
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