ok i got this car a couple years ago it has a th200 metric tranny in it and has cross-fire injection. i drove the car and at WOT the 1st to 2nd shift kicks the car sideways filling the street with smoke and putting a huge grin on my face. anyway, i pulled the diff. cover and counted the teeth on the gears and it came out to be a 3:73 gear set. i know this isn't stock.and as i said it ALWAYS spins both tires. it doesn't have any clutch packs in it though. it just has some funky paw/hook thingy. anyone ever seen this?????

 

you must be the guy i've always head about. you know the one with a cross fire car with enough power to get out of it's own way.

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ICON Motorsports

1st & 3rd

 

HA!HA! YOU FUNNY MAN!!!!!!! LOL

 

hey that posi you have is STOCK, at least in some cars. That paw/hook thingy is a piece that senses different wheel speeds and engages the opposite axle when needed....They are not noted for their reliability!!
My 84 Z has one that is on the verge of self destruction.

 

thank-you for the information. mine always worked ok,but i think it had just been rebuilt when they put in the new gears.

 

Sounds like a locker?

 

yeah it locks alright! halfway into a turn, causing the passengers to soil their pants!

 

My 84 L69 5 speed came with a 3:73 posi from the factory. Of course I grenaded it and it's replacement before stepping up to a Ford 9".

 

Sounds to me like somebody beat you to the guts of that diff...

The "posi" you describe is an Eaton Gov-Lock which never acme stock in a F car, only S-10s; and 3.73 didn't come in the cross-fire cars either, only HO cars.

I'd bet that somebody came up with the HO car rear and the Eaton S-10 carrier in the boneyard and put them in the car and that's how that combo of parts got there.

That "locker" is extremely fragile; they're known for failing with 2.8s in the trucks. I'd treat it gently if I was you.

Also, you might find it worthwhile to count the splines on the axles while you have it apart; there are both 26-spline and 28-spline those, and it might be real handy to know which one you have someday, like when those little tiny teeth things shred and you're looking for another carrier.

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"So many Mustangs, so little time..."
ICON Motorsports

 

sorry, i forgot to mention that some poor schmuck out there now has an 86 iroc-z with that rear in it. a tree fell on the 83 t/a. i bought the iroc-z with a bad rear and took the rear out of the t/a. feel sorry for the guy, now that i know what a crappy rear it is.