I am getting my 4.30 gears installed this week in my 1996 Cobra. It has the T-45. Using Late Model Restorations calculating tool it says I can use a white 23 tooth gear. However, I am worried it won't be accurate enough. I don't know if it will be, never swapped speedo gears. Does anyone have any input on this matter? Thanks.
Speed Cal or 23 tooth
- Thread starter Witzy0070
- Start date
CC'S95GT
Post Whore
I'm not sure about the t45. but on the t5 the 23 tooth gear is only good up to a 3:55. After that you still need a speed cal.
But that really depends on what's on the trans too. Because the speedo drive gear inside the trans can be changed too. But the tail of the trans needs to be removed to do it.
But that really depends on what's on the trans too. Because the speedo drive gear inside the trans can be changed too. But the tail of the trans needs to be removed to do it.
lutter94
Well-Known Member
Ford Racing Speed Cal is awesome.
blackdemon007
Active Member
This ^
I also have the 23 tooth, with 4:10 gears and its still off 10 mph at 60.
I also have the 23 tooth, with 4:10 gears and its still off 10 mph at 60.
CC'S95GT
Post Whore
If your getting a speed cal, why even mess with the 23 tooth gear you know isn't going to work?
lutter94
Well-Known Member
^ this
rz5.0
Legend
It's going to be off.. and the 23 gets chewed up..
rz5.0
Legend
If it was a t5 it be a different story. .
1. Because I can.
2. Because 15 dollars is hardly much money.
3. It takes 5 minutes to install.
4. Because I don't know for a fact it won't work.
rz5.0
Legend
The 23 is also recommended for 410 so...
There is no recommendation for 4.30 gears, the difference between the 4.10 and 4.30s is so minute.
Bottom line, I am going to try the 23 tooth and use a GPS to find the dissimilarities. If I have to use the Speed Cal then I will buy it. I enjoy testing real world function on my own. It's part of why I have a "hot rod".
lutter94
Well-Known Member
5%. I guess its personal preference if thats acceptable or not. I wouldn't like it.
94yellow50
Member
I have a speed cal on my 94 with 4.10s. Had it with the auto and now the t5. Surprisingly I never adjusted it from when it was auto 3.73 to now t5 and 4.10 and it only reads 3mph fast.
