Early and late 5spd comparison

ricardoa1

Registered User
If you have driven both an early and newer 5spd with stock rear ends which one would you prefer.

I blew the syncros on my third gear when I went to the track. And while they have the trans apart I am debating what gears to use.
I am thinking of using 1st and 2nd from the early trans and kepping my stock 3,4,5.

gear ratios for the early trans are
1st 3.75
2nd 2.32
3rd 1.43
4th 1.00
5th .75
the newer trans
1st 3.42
2nd 2.16
3rd 1.34
4th 1.00
5th .75

I plan to run 3.07 but just want to see if i can benefit from using the early 1st and 2nd gear.
also can someone calculate at what speed the car will be at in each gear when at 5500Rpms.
 
Last edited:
i prefer the 94/95 trans but i am runnning a 3.55 gear tho. the earlier trans seems fine up to and including 3.27s. with 3.07s, i would probably stay with the early trans.
 
Here's my gearing chart for the 94-95 tranny and 3.08's:

RPM, Gear Ratios, Axle Ratio, Final Ratio, Tire Diameter, MPH


5600 3.42 3.08 10.53 25.21 40
5600 2.16 3.08 6.65 25.21 63
5600 1.34 3.08 4.13 25.21 102
5600 1.00 3.08 3.08 25.21 136
5600 0.75 3.08 2.31 25.21 182
 
DLF said:
Here's my gearing chart for the 94-95 tranny and 3.08's:

RPM, Gear Ratios, Axle Ratio, Final Ratio, Tire Diameter, MPH


5600 3.42 3.08 10.53 25.21 40
5600 2.16 3.08 6.65 25.21 63
5600 1.34 3.08 4.13 25.21 102
5600 1.00 3.08 3.08 25.21 136
5600 0.75 3.08 2.31 25.21 182

This is very helpful. Is there a way of calcualting the early trans? or are these numbers from your dataloging?

I went tru the parts catalog at the Ford dealer I work at. And everything internally was the same part number for both trans except the 1,2,3 gears. Syncros are the same, all the shafts are the same, bearings and rings are the same so on and so on.
So I am assuming that all I need to do is change the gears
to make it work.
 
Same chart, early tranny:

RPM, Gear Ratios, Axle Ratio, Final Ratio, Tire Diameter, MPH


5600 3.75 3.08 11.55 25.21 36
5600 2.32 3.08 7.15 25.21 59
5600 1.43 3.08 4.40 25.21 95
5600 1.00 3.08 3.08 25.21 136
5600 0.75 3.08 2.31 25.21 182
 
Personally, I think the later tranny has better gear spacing, and I'd leave it alone if I were you.

89-93

3.75
2.32 38.1%
1.43 38.4%
1.00 30.1%
0.75 25.0%

94-95

3.42
2.16 36.8%
1.34 38.0%
1.00 25.4%
0.75 25.0%
 
I have to clear up this thread, so I dont give the wrong info.
You do have to change the countershaft. Unfurtunately the countershaft is one piece and carries the 1st 2nd 3rd 4th counter gears.
so my plan did not work.

To make it work I would need 1,2,3 gears and the counter shaft, But that essentially would make it an early style trans.
 
This thread has the early and late model ratios for the tranny reversed. Also there is no 4th gear counter shaft gear as 4th is direct drive through the tranny from the Input cluster and shaft to the output shaft. The countershaft is not engaged as the output shaft is splined to the input shaft and cluster via the 3rd and 4th Syncro Assembly.

I would also like to know where you got a parts breakdown for comparison between the early and late model trannies. Last time I checked I was told the 94-95 version was sold as a unit with no internal parts shown for order.
 
It all comes down to what you want to do.

The 3 fastest and most powerful SC 5 speeds use 3.55 gears.

Gary
 
95 Helms Manual ..page 07-03-47 shows 1st gear as 3.75
94 Helms Manual...page 07-03-47 shows 1st gear as 3.75
93 Helms Manual...page 07-03-43 shows 1st gear as 3.75
92 Helms Manual ..page 07-03-45 shows 1st gear as 3.75
91 Helms Manual...page 16-20-39 shows 1st gear as 3.75
90 Helms Manual ..page 16-20-38 shows 1st gear as 3.75
89 Helms Manual ..page 16-20-37 shows 1st gear as 3.75


So I guess they are all the same huh?
 
Duffy Floyd said:
This thread has the early and late model ratios for the tranny reversed.
I went with the info found on this site.

Duffy Floyd [/i][B]Also there is no 4th gear counter shaft gear as 4th is direct drive through the tranny from the Input cluster and shaft to the output shaft. The countershaft is not engaged as the output shaft is splined to the input shaft and cluster via the 3rd and 4th Syncro Assembly. [/B][/QUOTE] You are correct i overlooked that [QUOTE][i]Originally posted by Duffy Floyd said:
I would also like to know where you got a parts breakdown for comparison between the early and late model trannies. Last time I checked I was told the 94-95 version was sold as a unit with no internal parts shown for order.

There is an exploded view of parts that breaks down the parts in the 94-95, when looking at some specific items it shows up as the same part number as the early trans. Some of the big components like gears do not give you a link to part numbers but a reference to order the whole transmisson, which is no longer availabe. And that how I came to that conclusion.
 
Duffy Floyd said:
95 Helms Manual ..page 07-03-47 shows 1st gear as 3.75
94 Helms Manual...page 07-03-47 shows 1st gear as 3.75
93 Helms Manual...page 07-03-43 shows 1st gear as 3.75
92 Helms Manual ..page 07-03-45 shows 1st gear as 3.75
91 Helms Manual...page 16-20-39 shows 1st gear as 3.75
90 Helms Manual ..page 16-20-38 shows 1st gear as 3.75
89 Helms Manual ..page 16-20-37 shows 1st gear as 3.75


So I guess they are all the same huh?

Well, you're right about the manuals (I just checked my 95), and I'm wrong.

But, the gear ratios I posted are correct, I've had both a 1990 and a 1995 5 speed, and you can check the spec PDF's.
 
Yeah I have some of those data sheets as well and they are filled with errors if you look through them closely.
 
Here are the gear counts I got from Ed Nicholson so you may be right Doug and Ricardo....I need to do some calculations after analyzing the power flow through the tranny. I don't see the Input Cluster Gear count though so I may have to go back to Ed and tap the well again.

"Hey Duffy

had a chance to look at the gear listings ...

94 - 95 :

1st gear 37 teeth
2nd gear 35
3rd gear 29
countershaft 37-32-24-16

89 - 93 :

1st gear 38 teeth
2nd gear 36
3rd gear 30
countershaft 37-31-23-15"
 
Here is what I was able to get from ford
Only the second gear is available from ford all the other gears and countershaft does not give a part number and refers you to whole trans.

94 - 95 :

2nd gear 35 teeth


89 - 93 :

1st gear 38 teeth
2nd gear 36
3rd gear 30
countershaft 37-31-23-15

So what does this tell us??????
 
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