TCCoA Forums banner

1 - 20 of 58 Posts

·
Registered
Joined
·
974 Posts
Discussion Starter #1
The time has come for my rear end gear ratio change to 3.73's. I have already acquired the frpp 3.73's but i need a traction lock carrier. I called my local ford dealer today only to find out that the loaded traction lock differentials are no longer available for the 96 tbird 8.8 The traction lock is only available in seperate parts.

What i am wondering is can i order a traction lock designed for an IRS cobra? 99 for example. I assume that the newer cars probably still have the traction lock carriers loaded still available...

My next choice would obviously be to get a used one from a junkyard. However, what cars had the traction locks? I understand that some of the manual trans SC's had traction lock 8.8s but how do i know just by looking at the carrier?

Any other ideas would be appreciated. Thanks everyone.
 

·
Registered
Joined
·
1,100 Posts
the tags are usually on the top right hand side of the pumpkin until a certain year. When I found mine the tag read 3 08 L.....the L stands for locking. Obviously you know what the # 08 stands for. But I just pushed my thumb on it for like 10 seconds then looked at my thumb and read it backwards....I did a bit of searching and came to find out that my winter beater at the time had a traction lock in it....How bright of me! But anyways it was a 81 crown vic. All I had to do was replace the clutch pack which I believe ran me about 80 bucks. I payed someone else to install everything, all that shimming crap takes some experience.

Im not sure what all Ford cars had the 8.8 that would also have a traction lock, but crown vics are a good starting point and they are abundant.
 

·
Registered
Joined
·
202 Posts
I am also intrested in this I orderd a trac loc 3 weeks ago and im still waiting im going to get a refond so i also would like to know what other cars I can steel one from. or wear I can get order one?
 

·
Registered
Joined
·
974 Posts
Discussion Starter #4
the tags are usually on the top right hand side of the pumpkin until a certain year. When I found mine the tag read 3 08 L.....the L stands for locking. Obviously you know what the # 08 stands for. But I just pushed my thumb on it for like 10 seconds then looked at my thumb and read it backwards....I did a bit of searching and came to find out that my winter beater at the time had a traction lock in it....How bright of me! But anyways it was a 81 crown vic. All I had to do was replace the clutch pack which I believe ran me about 80 bucks. I payed someone else to install everything, all that shimming crap takes some experience.

Im not sure what all Ford cars had the 8.8 that would also have a traction lock, but crown vics are a good starting point and they are abundant.
Hmm... Okay do you happen to know how i would know if it really is a traction lock if the carrier is uninstalled? Our ford yard that we get our parts from pulls the parts for us and the last thing i need is to take the carrier to the differential shop only to find out its open.

Do the crown vics have an IRS? I thought that the traction locks for these cars needed to be from an IRS car or am i mistaken? Thanks again.
 

·
Registered
Joined
·
974 Posts
Discussion Starter #5
Also... i understand that the mustang traction locks CAN be made to work. I understand that the side gears are different, and the mustang side gears can be machined to work with the tbird components. My question is are the side gears interchangeable? I.E. can i get the new LOADED t lock carrier meant for... say a 2001 mustang GT 8.8 rear end then buy the side gears meant for a t-lock tbird 8.8 rear end and have the shop install the tbird side gears to the mustang carrier?

The reason i ask is because i assume that a carrier meant for a 2001 mustang GT is most likely still available from ford. Also because my ford parts guy said the tlock components are available for the tbird carrier (i'm guessing for the use of rebuilds) therefore i could probably get the proper tbird side gears. Thanks again everyone.
 

·
Registered
Joined
·
1,100 Posts
Well as far as telling wether a uninstalled carrier is a traction lock or not, I have not the slightest clue, I will ask a few people that know everything about the ford 9'' and see if they know. Otherwise I would ask the people at the Ford yard, maybe the guy with the grayest hair, atleast were I am from those guys know that stuff in and out, just from talking to them is where I gain knowledge.

Crown Vics do not have IRS, and just because we have IRS, we dont need the T-Loc out of an IRS car, the T-Loc assembly comes out of the pumpkin, essentially the pumpkins are the same on all 8.8 rear ends, its the setup of the suspension outside of the pumpkin which makes a car IRS.
 

·
Registered
Joined
·
1,100 Posts
Ohh and as for the 01 mustang bit, if the 8.8 is the same, I don't see why JUST the T-LOC wouldnt work, however I have limited expereince with any newer cars rear end, I have dealt with a 81 and 92 crown vic, and a 93 T bird.....And several ford 9''...So before you make a decision on that I would talk to someone who knows about the newer rear ends.

As far as getting one from a yard, I would still find one from a VIC just cause someone may charge more for one out of a mustang than a 4 door boat, ya know? There is a huge demand on stang parts, and a small market from vic parts, although it is essentially the same part.
 

·
Registered
Joined
·
674 Posts
Crown Vics do not have IRS, and just because we have IRS, we dont need the T-Loc out of an IRS car, the T-Loc assembly comes out of the pumpkin, essentially the pumpkins are the same on all 8.8 rear ends, its the setup of the suspension outside of the pumpkin which makes a car IRS.
You are not correct sir. (no offense intended whatsoever) The side gears in the differential carrier are different between live axle cars and IRS cars. The Live Axle cars have c-clips that hold them into the carrier. The IRS cars have a circlip. You can get IRS axles into a Live axle carrier, but chances are you will never get them out again because of the slight difference in the machining of the gears. A few have had success using the Live Axle carrier and taking the circlips off of the IRS axles... or you can get them machined. Best thing to do is find a MN12 or FN10 that has t-lock and use that. I'm not 100 percent sure on the IRS cobra carrier, but i think they had 31 spline axles where the mn12 uses 28 spline...
 

·
Registered
Joined
·
202 Posts
yes the cobra carrier is 31 spline but tha cobra hubs are 28 spline so you could use the cobra half shafts if thay are the same length.
 

·
Registered
Joined
·
974 Posts
Discussion Starter #11
Hmm interesting. I could have sworn that the 99 cobras had IRS obviously AND 28 splines? I thought only the later models had 31 spline. I know for sure the supercharged terminators had the 31. Anyone clarify?

Still nobody knows if you can just swap sidegears? Meaning getting a 01 mustang carrier and having the differential shop swap to the tbird side gears? Thanks everyone.
 

·
Registered
Joined
·
974 Posts
Discussion Starter #12

·
Registered
Joined
·
1,522 Posts
Hmm interesting. I could have sworn that the 99 cobras had IRS obviously AND 28 splines? I thought only the later models had 31 spline. I know for sure the supercharged terminators had the 31. Anyone clarify?

Still nobody knows if you can just swap sidegears? Meaning getting a 01 mustang carrier and having the differential shop swap to the tbird side gears? Thanks everyone.

Yes the 99-01 Cobra are 28 spline same as ours.

Use a standard Mustang tracloc and remove the clips from your axles since the outer hub will never let the axles leave the housing anyway.
 

·
Registered
Joined
·
874 Posts
That particular model is listed for a 7.5". However, our parts vendor for tccoa mentioned that there is in fact a ford racing unit available. I haven't heard back from him yet as far as more information. Hopefully tomorrow.
it's for an 8.8 it's a miss print
 

·
Registered
Joined
·
4,407 Posts
yes the cobra carrier is 31 spline but tha cobra hubs are 28 spline so you could use the cobra half shafts if thay are the same length.
I think the Cobra Shafts are alittle short.But I am not too sure.


As long as the Diff tag is still on the housing to should have no problem with identifying a Trak-Lok.Just look for a 3L08, or 3L27.


Or if you can look at a door jam of a Bird or Cougar.

Under the "AX" on the door jam sticker:

Conventional Lock Rear Axle Ratio
G H 2.26
B C 2.47
8 M 2.73
7 - 3.07
Y Z 3.08
4 D 3.42
F R 3.45
5(W5) E(XE) 3.27
6 W 3.73
2 K 3.55
A - 3.63
J - 3.85
Fact is Thunderbirds and Cougars are everwhere.You should be able to find somthing.


Good luck.
 

·
Registered
Joined
·
7,062 Posts
Still haven't told me who is in the avatar.

I think the Cobra Shafts are alittle short.But I am not too sure.


As long as the Diff tag is still on the housing to should have no problem with identifying a Trak-Lok.Just look for a 3L08, or 3L27.


Or if you can look at a door jam of a Bird or Cougar.



Fact is Thunderbirds and Cougars are everwhere.You should be able to find somthing.


Good luck.

I got mine out of a standard 3.8 car with 4 wheel disc. Figured it would be less beat on. E Code. The above chart is a bit hard to read without the lines in the table.
http://www.tccoa.com/articles/gears/gears.html

Oh and I have a nice one, 3.08 freshly painted for sale. :zwall:
 

·
Registered
Joined
·
4,407 Posts

·
Registered
Joined
·
7,062 Posts
I'll kill you!
Let's take this outside to the members area!!!!!


J/K.


But honestly. These are a dime a dozen around here.
 

·
Registered
Joined
·
1,100 Posts
You are not correct sir. (no offense intended whatsoever) The side gears in the differential carrier are different between live axle cars and IRS cars. The Live Axle cars have c-clips that hold them into the carrier. The IRS cars have a circlip. You can get IRS axles into a Live axle carrier, but chances are you will never get them out again because of the slight difference in the machining of the gears. A few have had success using the Live Axle carrier and taking the circlips off of the IRS axles... or you can get them machined. Best thing to do is find a MN12 or FN10 that has t-lock and use that. I'm not 100 percent sure on the IRS cobra carrier, but i think they had 31 spline axles where the mn12 uses 28 spline...
no offense taken. If you are just talking about the the center section I don't know what is different, i Know exactly what the c- clips are, ciclip I dunno....Like i said i paid someone to put it in my car, but I know for a fact taht my t-lock worked out of my crown vic, all I did was replace the clutch pack, and i was good to go.
 
1 - 20 of 58 Posts
Top