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post #1 of 13 (permalink) Old 10-02-2003, 05:52 PM Thread Starter
 
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rear axle

I have looked everywhere and I find what kind of rear axle I have. Is it limited slip, posi,..... The car I have is a 91 t-bird 5.0.
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post #2 of 13 (permalink) Old 10-02-2003, 11:01 PM
 
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Either use the seach to find the door jam letters or numbers to identify what came with your car or jack up the rear end and write the info on the tag down and call ford with it - they'll tell you. you can tell if you have trac-lok or open rear end by spinning on of the wheels while the rear end is jacked up - if both turn the same direction your axle is trac-lok, if the other wheel spins the opposite direction you are turning then the axle is open and the wheel with less resistance will spin.
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post #3 of 13 (permalink) Old 10-12-2003, 07:02 PM
 
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It ain't "POSI" unless you have a chevy differential in your Ford housing! Fords have a Traction-Lok (Trac-Lok) differential. Both are clutch type limited slip differentials though.

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post #4 of 13 (permalink) Old 10-12-2003, 08:10 PM
 
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Look on the doorjamb and you will find your axle specs. Go to this link, http://tccoa.com/articles/gears/gears.html and match up your code. For instance, my 92 5.0 Bird has 3.08 gears and a "Z" code meaning I have a Trac-Loc. If your code falls under the conventional column it means your car is a one-legger, not Trac-Loc.
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post #5 of 13 (permalink) Old 01-07-2004, 03:51 PM
 
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What's really weird is that my door code is a Y, yet when I've gone to light 'em up, I've left dual black marks. I'm fairly sure of it cause I've looked back to check them. Plus on every other vehicle I've had, I've gotten wheel hop as it switches back and forth. This one doesn't seem to do that. How is that possible? I'm rather confused now.
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post #6 of 13 (permalink) Old 01-07-2004, 04:55 PM
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even without a t-lok u can still leave 2 black marks.. it just depends on how much traction that other wheel has... if u can... jack up the back of the car and put the car in neutral and spin the wheels, if the wheels spin the same way then u have a t-lok, if they spin opposite ways, then obviously u dont,

hope this helps u figure it out
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post #7 of 13 (permalink) Old 01-07-2004, 05:15 PM
 
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I'll definitely try that next time I get a chance. Don't have a way to really jack it up right now, but if I can get it to a shop to do something else, I'll give em a spin while it's up.
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post #8 of 13 (permalink) Old 01-07-2004, 06:19 PM
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I wouldn't. If you do have posi or the one wheel that is on the ground catches traction.........
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post #9 of 13 (permalink) Old 01-07-2004, 06:21 PM
 
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That's why I said that I would do it next time I have it in the shop and the whole thing is off the ground on the lift.
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post #10 of 13 (permalink) Old 01-07-2004, 09:03 PM
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put a jack under the differential and lift the whole back of the car at once, or like u said, just use a lift
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post #11 of 13 (permalink) Old 01-08-2004, 06:09 AM
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So with both wheels off the ground they will both have an equal amount of traction and will both spin..... and you still won't know if you have track lock or not.
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post #12 of 13 (permalink) Old 01-08-2004, 08:47 AM
 
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Ah, but if they spin the same way I do. If they spin DIFFERENT ways, I don't (or it's busted).
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post #13 of 13 (permalink) Old 01-08-2004, 11:45 AM
 
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Quote:
Originally posted by Avatar28
Ah, but if they spin the same way I do. If they spin DIFFERENT ways, I don't (or it's busted).
When my Trac-Loc was used up, the drivers side wheel would rotate the passenger side wheel, but the passenger side wheel would NOT rotate the drivers side wheel. Anything other than the desired indication is BAD!!!!

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