how to tell the rear end is posi
#1
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Car: 88 Trans am
Engine: high comp vette engine.
Transmission: 700r4
Axle/Gears: 308
how to tell the rear end is posi
cant u telll if the rear end is posi through the vin number? i know u can if the rear ends are posi on s10 trucks is through the glove box. but i want to be sure that the rear is posi cuz thats alot of work for it not to be and isnt mine posi? 88 trans am with a g80 rear its a 10 bolt. do they stop working after a while? cuz mine will spin the right wheel then if im turning left the other wheel will spin and the right wont.
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Car: 88 GTA
Engine: 350 TPI
Transmission: T-56
Axle/Gears: 9 bolt w/ 3.73
Easy way of testing for posi is jack the rear up, put the car in neutral, then spin one of the tires. If the other spins the same direction then you have posi. What you're describing when bruning out is exactly what SteelTownMadDog said, your posi is shot if you still have it.
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Car: White 25th Anniversary RS
Engine: lt1
Transmission: t56
Axle/Gears: 4:10
Easy way of testing for posi is jack the rear up, put the car in neutral, then spin one of the tires. If the other spins the same direction then you have posi. What you're describing when bruning out is exactly what SteelTownMadDog said, your posi is shot if you still have it.
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Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
The only way to know 100% whats in there is to pull the cover!
RPO codes will tell you what it rolled out of the factory with 20 years ago and unless the car was shrink wrapped and in storage until now its very likely theirs something different in there.
RPO codes will tell you what it rolled out of the factory with 20 years ago and unless the car was shrink wrapped and in storage until now its very likely theirs something different in there.
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Car: 1987 Chevrolet Camaro Z28 IROCZ
Engine: L98 350, mini ramed and camed
Transmission: T56 6 speed manual
Axle/Gears: 10 bolt 3:73 limited slip
Originally Posted by 92rs85berlintta
not always the case i have seen posi rears do just the opposite.
I have a 9 bolt with the g80 and g92 options. I could not figure out why it's doing that. I even asked about it on here and people said it sounds like a normal 9bolt. And yes I pulled the cover to check when I did a fluid change. But it works fine. lol. Adam :-)
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Car: 04 Silverado
Engine: 4.8
Transmission: auto
My favorite method of testing is to do a burn out in dirt
----------
I have a 9 bolt with the g80 and g92 options. I could not figure out why it's doing that. I even asked about it on here and people said it sounds like a normal 9bolt. And yes I pulled the cover to check when I did a fluid change. But it works fine. lol. Adam :-)
Buy tires often do you?
----------
Originally Posted by charlie31603
I have a 9 bolt with the g80 and g92 options. I could not figure out why it's doing that. I even asked about it on here and people said it sounds like a normal 9bolt. And yes I pulled the cover to check when I did a fluid change. But it works fine. lol. Adam :-)
Last edited by 82 Iron Duke; 04-27-2006 at 10:46 PM. Reason: Automerged Doublepost
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Car: White 25th Anniversary RS
Engine: lt1
Transmission: t56
Axle/Gears: 4:10
lol you cant test them in dirt my open rear will rip them both in the dirt if i hammer it enough LOL
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Car: 88 Trans am
Engine: high comp vette engine.
Transmission: 700r4
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so if i do have a posi i should just change the fluid and it should work. or do i have to just go and get a new rear end? also where are the numbers im looking for at in the rear end itself or somewhere else and if ur theory is correct i can go to the junk yard and pop the rear cover off and if i see springs take it cuz its posi?
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Car: 1991 Camaro RS
Engine: 357cid
Transmission: T5 Swap
Axle/Gears: 10bolt 7.5" 3.23 soon to be 3.73
Originally Posted by 88_Bandit
so if i do have a posi i should just change the fluid and it should work. or do i have to just go and get a new rear end? also where are the numbers im looking for at in the rear end itself or somewhere else and if ur theory is correct i can go to the junk yard and pop the rear cover off and if i see springs take it cuz its posi?
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Car: White 25th Anniversary RS
Engine: lt1
Transmission: t56
Axle/Gears: 4:10
pop off your diff cover if there is springs its posi. If theres no springs its not. Depending on the year of the axle its either 28 spline or 26. They are not interchangeable. look for a camaro with the same amount of bolts your cover has and springs inside. The trouble with j yard posi is you cant gurantee its gonna work. your best bet is to get a zexel off ebay provided you have 28 spline axles.If you have 26 you can just buy a 26 spline posi carrier. I think they started 28 splines in 89 if im not mistaken.you can always slide an axle out and count the teeth to be 100% positive while you have it open.
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Car: 1987 Chevrolet Camaro Z28 IROCZ
Engine: L98 350, mini ramed and camed
Transmission: T56 6 speed manual
Axle/Gears: 10 bolt 3:73 limited slip
Originally Posted by 88_Bandit
so if i do have a posi i should just change the fluid and it should work. or do i have to just go and get a new rear end? also where are the numbers im looking for at in the rear end itself or somewhere else and if ur theory is correct i can go to the junk yard and pop the rear cover off and if i see springs take it cuz its posi?
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Car: White 25th Anniversary RS
Engine: lt1
Transmission: t56
Axle/Gears: 4:10
LOL this thread should be called how not to tell its a posi. seriosly tho just follow Apeiron or my advice and you will be able to tell.
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Car: 1987 Chevrolet Camaro Z28 IROCZ
Engine: L98 350, mini ramed and camed
Transmission: T56 6 speed manual
Axle/Gears: 10 bolt 3:73 limited slip
Originally Posted by Apeiron
There were non-posi 9 bolts.
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