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-   -   T-45 Tail Shaft Swap (https://www.allfordmustangs.com/forums/4-6l-tech/140694-t-45-tail-shaft-swap.html)

Sxynerd 05-14-2009 11:44 AM

What's the update on on you Haury?

dr0pt0pGT 05-22-2009 03:49 PM

Excellent write up. im a little confused though. in your original post you say to swap the tailshaft. Are you refering to the actual tailshaft/output shaft or the tailshaft housing? So to recap... if Im putting a tremec t-45 (99-04) into a 97 GT then i would need to remove the tailshaft housings on both trans, swap the metal ring off the tremec for the plastic ring off the borg warner t-45 (96-98), and then put the borg warner (96-98 non-cobra) tailshaft housing on the tremec (99-04)? End result would be tremec trans with the plastic ring from borg warner and tailshaft housing from borg warner. Am I on the right path or am I way off?

Popeye54k 05-23-2009 04:05 AM

Quote:

Originally Posted by dr0pt0pGT (Post 1549569)
Excellent write up. im a little confused though. in your original post you say to swap the tailshaft. Are you refering to the actual tailshaft/output shaft or the tailshaft housing? So to recap... if Im putting a tremec t-45 (99-04) into a 97 GT then i would need to remove the tailshaft housings on both trans, swap the metal ring off the tremec for the plastic ring off the borg warner t-45 (96-98), and then put the borg warner (96-98 non-cobra) tailshaft housing on the tremec (99-04)? End result would be tremec trans with the plastic ring from borg warner and tailshaft housing from borg warner. Am I on the right path or am I way off?

By tailshaft, I'm referring to the tailshaft housing. Other then that, seems like you're on the right path...

dr0pt0pGT 06-02-2009 07:28 PM

Ok so if I was to use a t-45 out of a 97 cobra, which has different crossmember mounting hole locations, I would put my tailshaft housing on it and that would fix both problems. Or do you know of other differences between the cobra and GT t-45s?

Popeye54k 06-03-2009 01:31 PM

Quote:

Originally Posted by dr0pt0pGT (Post 1566562)
Ok so if I was to use a t-45 out of a 97 cobra, which has different crossmember mounting hole locations, I would put my tailshaft housing on it and that would fix both problems. Or do you know of other differences between the cobra and GT t-45s?

The only differences I know of the Cobra and GTs (96-98) are the tail shaft housing--due to different hole locations.

If you put on that 97 cobra tranny with your tail shaft housing, that will fix the issue of the hole locations (you'll not need that crossmember of the cobra).

I'm not 100% sure of the reluctor ring though. It may have the plastic ring. To find out, you could tell by the sensor it has on and by the way it is mounted. If its straight on the side, it has the metal reluctor ring. If its on the side slightly in a angle, then it has a plastic ring.

ocoinnigh 09-25-2009 05:17 PM

i have been getting conflicting fixes for my car. i have the exact opposite issue with my 98. i just got the car that was originally an automatic that was converted to 5-speed using a tranny out of an 03 gt.

cincy speed shop claims for $375 they can tune the car which has mass tranny codes with no working odometer or speedometer.

is there an easier fix other than swapping my tranny for to correct year and flashing the ecu? any thoughts?

poison96 06-15-2010 03:58 AM

I know this is a old post but found it and had a question if i can get a few answers.... thanks

Its a 96 Cobra....

I got my trans rebuilt at a shop and i guess they or where ever they got the trans from doesn't work with my speedo sensor/gear b/c it doesn't go in n if it does with ** force a bit ** ends up getting chewed up plus MPH doesn't work still n throws a code...

So the shop was thinking of ordering i guess the speed sensor with the magnetic at the end but is the connector the same as the one with the speedsensor with the gear at the end ?

or well i just have to have them change out the whole rear shaft back to the speedo gear type ?

sorry if i confused any of you..

Popeye54k 06-15-2010 05:10 AM

First of all, congrats on using the *search* button. You'd be surprise how many and I mean many people don't know how to use it.

There are two types of vehicle speed sensors:

1) a mechanical VSS for 96-98 and a
2) magnetic speed sensor for 99-04

The mechanic speed sensor (sort of looks like a long shaft with teeth on the end. Well, those teeth spin with the inner plastic that's in the tail shaft. The magnetic speed sensor picks up magnetic pulse from a metal reluctor ring in the tail shaft. IN NO WAY will those two sensor be interchangeable. Meaning, using the mechanic speed speed to the reluctor ring or visa versa.

Since your car falls in the category of a 96-98, you must use the mechanical speed sensor.

Now, from my understanding, the cobra and GT do not have the same tail shaft housing. I think it has something to do with the location of the cross member bolts--not sure.

Bottom line, stick to the mechanic speed sensor and you'll be fine. Oh yeah, to answer your question both type of sensors use the same plug. Good luck:bigthumbsup

hotshot 06-15-2010 04:17 PM

this thread looks like it deserves a sticky :bigthumbsup

poison96 06-16-2010 04:10 AM

Thanks helped out specially your pictures you had posted of full details..... so i ended up at the shop again they had a magnetic sensor which didn't even get close to fitting.... I tried looking through the speed sensor hole n didn't see the plastic gear on the shaft....... So tomorrow i'm just gonna leave it there n he said he is going to send it back out to have the guy put in the right shaft this time around...... also he is going to order a new speedo gear since it got chewed up from them forcing it in......
Quote:

Originally Posted by Popeye54k (Post 2107425)
First of all, congrats on using the *search* button. You'd be surprise how many and I mean many people don't know how to use it.

There are two types of vehicle speed sensors:

1) a mechanical VSS for 96-98 and a
2) magnetic speed sensor for 99-04

The mechanic speed sensor (sort of looks like a long shaft with teeth on the end. Well, those teeth spin with the inner plastic that's in the tail shaft. The magnetic speed sensor picks up magnetic pulse from a metal reluctor ring in the tail shaft. IN NO WAY will those two sensor be interchangeable. Meaning, using the mechanic speed speed to the reluctor ring or visa versa.

Since your car falls in the category of a 96-98, you must use the mechanical speed sensor.

Now, from my understanding, the cobra and GT do not have the same tail shaft housing. I think it has something to do with the location of the cross member bolts--not sure.

Bottom line, stick to the mechanic speed sensor and you'll be fine. Oh yeah, to answer your question both type of sensors use the same plug. Good luck:bigthumbsup


cobra_6725 03-17-2012 11:39 AM

So I can't remove the speedo gear. So I took it to a tranny shop and they said the plastic one will break trying to remove it. I got the clips out already. Any input on how you guys got the plastic one off?

cobra_6725 03-17-2012 12:51 PM

Okay guys so the tranny shop said if I keep the reluctor ring in and use the magnetic speed sensor then my speedometer will work. Basically just swap the tail housing, so that the new 2000gt tranny mounts into my 98 cobra. What do you guys think? It has the same plug, but he said it will be off by a couple of mph. I can fix that by just recalibrating the computer. Any thoughts? Will it work?

sillyrabbit0420 03-18-2012 03:59 PM

Quote:

Originally Posted by hotshot (Post 2107889)
this thread looks like it deserves a sticky :bigthumbsup

Well good thing you never actually did it, clown!

Quote:

Originally Posted by cobra_6725 (Post 2968978)
Okay guys so the tranny shop said if I keep the reluctor ring in and use the magnetic speed sensor then my speedometer will work. Basically just swap the tail housing, so that the new 2000gt tranny mounts into my 98 cobra. What do you guys think? It has the same plug, but he said it will be off by a couple of mph. I can fix that by just recalibrating the computer. Any thoughts? Will it work?

The dudes who wrote this and posted here are long gone. As is much of the tech knowledge once available on AFM.
Having your speedo off by a little bit isn't that big of a deal.
I don't know what you mean by recalibrating your computer to fix the speedo. I know you can do that on the 99+ cars, but I thought the 98 and older needed a speedo gear.

Popeye54k 03-18-2012 06:25 PM

Quote:

Originally Posted by cobra_6725 (Post 2968891)
So I can't remove the speedo gear. So I took it to a tranny shop and they said the plastic one will break trying to remove it. I got the clips out already. Any input on how you guys got the plastic one off?

I don't remember using much pressure removing the plastic ring off. Every time I took one off (about 3 of them at least) I never broke one! If I remember correctly, once I got all c-clips out of the way, I removed the rings with just my hands with minimal force.

Quote:

Originally Posted by cobra_6725 (Post 2968978)
Okay guys so the tranny shop said if I keep the reluctor ring in and use the magnetic speed sensor then my speedometer will work. Basically just swap the tail housing, so that the new 2000gt tranny mounts into my 98 cobra. What do you guys think? It has the same plug, but he said it will be off by a couple of mph. I can fix that by just recalibrating the computer. Any thoughts? Will it work?

NO! That will not work. Because of the magnetic pulse vs gear, the computer does not recognize the difference. I've heard (only heard but not sure) that you'll need a special device called something dallas (I don't remember the name). But if you have all the parts, just do it right from the start. Again, it might work, but it will NOT be plug-and-play if you decide to keep the metal reluctor ring.

Actually, now that I think about it...the metal reluctor ring will ONLY work with the 2000 tail shaft. And the Plastic gear will only work with your 1998 tail shalf. Both sensors have the same plug but are DIFFERENT SIZES! And If I remember correctly, the 98 and 00 are externally different also due to the cross member bolts location. Bottom line, you'd want to put the plastic gear, speed sensor, and tail shaft from your 98 to the 2000 so it can work for your 98. No other way around it! Don't mean to sound like a D**k, I'm just not feeding you BS.

Quote:

Originally Posted by sillyrabbit0420 (Post 2970339)
Well good thing you never actually did it, clown!



The dudes who wrote this and posted here are long gone. As is much of the tech knowledge once available on AFM.
Having your speedo off by a little bit isn't that big of a deal.
I don't know what you mean by recalibrating your computer to fix the speedo. I know you can do that on the 99+ cars, but I thought the 98 and older needed a speedo gear.

I might be gone, but check in once in a while. I still have love for Mustangs, although, I'm going the ricer path with my new Nissan 240sx...lol.

cobra_6725 was able to get a hold of me via PM which is linked to my email. I have no problems helping others If I have the knowledge for that specific topic.

nyuk98gt 03-18-2012 10:11 PM

cobra_6725:

Dallas Mustang offers an extended range SpeedCal that should allow you to run a mag pick-up sensor to power your 'electro-mechanical' speedo/odo. The VSS generates an alternating current signal that is different in frequency to the mag sensor. (I am no electrical whiz as you can tell but I'm "generally correct" about the signals, lol). I enjoyed your VB codes, too!!

Popeye54k: Thank you for posting the how-to and for the follow-up posts. You've helped out a lot of Mustangers! (And I'm OK with your driving a Civic as a DD :D :D but you've gotta get another 'Stang!).


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