going with 373s...how to get speedo working right!!
- Thread starter 96darkhorse
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Killer95Stang
New Member
well.. to get it closest you can, you will need a 23 tooth speedo gear. Only some performance shops sell it, or you can buy it from a Chrysler dealer... From my understanding it came out of a Jeep CJ-7 with a T-5. Although, the gear wears down over time, and may fail after a while, since the mesh of the oversized gear isn't perfect. The one in my car lasted over 5 years....
96darkhorse said:
Instead of a gear, you could look into a SpeedCal ... http://www.dallasmustang.com/?p=9910
Killer95Stang
New Member
With the 23 tooth gear, its like 2-3 mph off... not a big deal for a 5 minutes work, and $15. The speedcal is $70.00 (with shipping), and takes a little longer to install...
BlueOvalStangGT
Active Member
is there any way to get it exact by switching the gear thats in the tranny? not sure what its called
Rootus
Officially Addicted
Ideally you should switch both the drive gear (in tranny) and driven gear (outside tranny). But you still won't be exact. I got mine close, and then I set the speedo to read accurately at 60 mph.BlueOvalStangGT said:
Speedcal is probably the best option, but it's also the most expensive.
Dave
Killer95Stang
New Member
The perfect (for perfect mph) driver/driven gear ratio with 3.73's and 25.7" tire would be 0.342... With the stock 8 tooth internal gear, and 23 external gear you get a ratio of 0.348.. The closest ratio while switching internal gears to a 7 or 6 tooth would net you a 0.350 ratio, which means the 23 tooth is the best and closest... Just run the 23tooth and check it every few years for wear...
There are a lot of inaccuracies here...
Changing the speedo gear takes 30 seconds, why is it a waste of time
? And to get the speedo to read correctly, you need to change the trans gear, which costs 5 and some change from Ford. Using a GPS as a guide, my speedo is about 1 MPH off, after 50 MPH. I wouldn't drive around with the speedometer being off because it racks up unnecessary miles.
Joe
Changing the speedo gear takes 30 seconds, why is it a waste of time
? And to get the speedo to read correctly, you need to change the trans gear, which costs 5 and some change from Ford. Using a GPS as a guide, my speedo is about 1 MPH off, after 50 MPH. I wouldn't drive around with the speedometer being off because it racks up unnecessary miles. Joe
baseman said:
Do you have a speed cal? I was just looking at the website and it says 94-2000 one place and then says for 96-2000 in another, just wondering if it was compatible with our computer, i mean if u have one then it obviously is, but like those power-programmers that superchips and hypertech sell, they don't work on our 94-95's. Thanks for the info
baseman said:
I just got 3.73's for christmas and ill be installing them in march, i have a 5spd, and if this speed cal works for the 94-95 mustangs, ill probably get it. anyone have it that can vouch for its worth? From the website:
SPEED-CAL,94-2003,5-SPD,94-98 AUTOMATICS
Fits Model Years: 1996 thru 2000
so i wonder which it is???
Black Stampede
Founding Member
I have the dallas mustangs speedcal and have nothing but good things to say about it. It is dead on and works great.
VIPERn94Five-0
Founding Member
VIPERn94Five-0 said:
As far as I can tell, it does. Since it is adjusting the signal that goes to the gauge cluster.
DirtyD916
Active Member
Rootus
Officially Addicted
You are correct, the EEC does not control the speedo on a 94/95. It is, however, an electronic speedo, so you can use a speedcal on it.TheUser said:
Dave
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