how do i tell if i have posi

thanks paul

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1987 Trans AM
305 LG4 5.0L
700R4
137,000km or 91,333miles
Black on gold trim
t- tops
K&N filter charger (ricers secret weapon)
Flowmaster 80 series 3 chamber catback
(NOW SHE SOUNDS POWERFUL!!!!!!!)

Sony X-plod deck
prestige 6 x 9s

 

Jack up the rear and spin a tire, if the other side tire turns the same direction, then you have posi. If it turns the other direction you have an open dif. Or you could do it the easy way and just light them up and check to see if you leave one or two burn-out marks on the pavement. good luck!!!

 

do it the easy way. Go power brake the car and if there are two lines of rubber on the road, its posi, if theres only one, its not


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86 Z28 red,
originally LG4,
new 350,
non comp Qjet,
T-5 five speed with new clutch,
stock 3.23 gears, performer intake,
crane 272H cam,
Accel 8mm wires,
Edelbrock performer cat- back,
Homemade cold/forced air intake.
KYB GR-2 struts and shocks

Future mods:
NOS,
Edelbrock TES headers, hi flo cat.
MSD igniton,
3.73 posi rear

cars i've beaten:
95' Avenger, 88 Mustang GT, 70' Mustang , 97 Dodge Ram, 94 firebird formula, 92 Mustang GT, 94' 3000GT VR4, 97' Honda Accord (just barely), countless many ricers....

 

If you still have the RPO sticker in your center console, look for the code G80. That means your car came with posi. But it could be dead by now...

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

ive heard of people saying there posi went out. i must be lucky. i have 150,000 miles on my car and they are still leaving 2 marks on the road. this is on an 82 T/A. if i have posi does that mean i have WS6. the rear end it all stock

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RED82TA5.7L

1982 Pontiac Trans Am
Cross-Fire Injected 5.7l V8
Eldebrock Headers, 3" Hooker Cat-Back, duel outlet with quad tips.
Mods: 1.6 Proform Roller Rockers, electric fan, Corvette 5.7L computer chip, K&Ns.
Audio: JVC Kameleon CD deck, Jenson 4x6 front, Eclipes 6x9 rear, 2 10" mTx T4000 powered by a mTx 200watt amp.

 

If it's an Eaton Locker limited slip, like my '85 IROC, you can't tell by just jacking it up and seeing if the other wheel turns in the same or opposite direction. It engages when there is (I believe) a 100 rpm difference in the speed of the 2 wheels. You have to spin one wheel by hand as fast as you can and at some point the other one will turn.


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1985 Yellow IROC-Z 5.0 HO, T-5 3.73 Posi, 4 wheel disks
PFCM pads, GTA wheels, Koni yellows, B&M Ripper, Dynomax

 

My posi just blew up, I mean exploded. the gear that engages the cluch disks on the driver's side exploded a while back. But I can still do posi(sometimes)