ok so i was pulling out the driveway on ice n she didnt wana move so i got on her harder n when she hit dry ground all i heard was BANG!..pretty sure i knew what it was, and yup, blew the rear, its a 85 Z28 Camaro 5.0 TPI 700r4 trans and POSI rear,

NOW i only have power to teh right wheel and when u move the car you hear grinding and noise, will it hold up enuf to drive back and forth to work or no?

I HAVE NEVER rebuilt a rear, but i have access to a posi carrier for $100, is it easy to put the new carrier in?

what exactly broke you think?

 

At some point you're going to have to pull the diff cover and take a look. Personally, I wouldn't drive it until I was certain of the damage--but that's me. The following will provide a good idea of what you may have ahead:

https://www.thirdgen.org/forums/tran...axle-gear.html

JamesC

 

yea, but ive never built a rear, only engines, not really to sure what im looking at lol

 

if parts are broken, it will be pretty obvious. pop the cover and take a look, see what you find.

 

Right: a rear is REALLY simple, you won't have any trouble at all spotting it, if something is tore up. It'll be SUPER obvious. You'll probably know before you even get the cover all the way off, by the gear teeth dropping out along with the fluid.

 

lol yea thats what i was thinkin, anyone remem when SPIKE TV used to have all those car and hot rod shows on sundays? i used to watch em wen i was a kid lol thats the only time i ever seen inside a rear lol


and if i grabed a posi unit from my buddy for $100 is it a good deal? how do i put it all back together?

do i gta measure and shim anything or can i just reuse my old shims and put it back together?

 

everything have to be re-shimmed, assembled, checked, taken apart, re-shimmed, assembled, checked ect. It takes a while, but if you do it wrong, the gears will be noisy and their life will be greatly shortened.

bearings have to be pressed on and off to change shims on the pinion gear, so if you dont have access to a press, it may be in your best interest to have a shop do all the work for you.

dont buy anything till you know whats wrong, you may not need a new carrier.

 

ok ill take the diff cover off tomorow and see what the deal is,

heres what it does now, it will spin BOTH rear wheels, most of the time, and when it only spins the right side its noisy

anyone have an idea of teh top of their head what it COULD b before i pull it apart?


do i gta change bearings? i dont have access to a press or anything

 

also i have access to a limited slip rear from a 85 z28 like mine cept i have disc brakes and it doesnt, will my disc brakes transfer right over?

 

If its just the limited slip unit that died, then just use the unit out of the other car (always use new carrier bearings). I wouldn't mess with swapping gears and I wouldn't swap the whole housing unless the whole housing was f*cked up. Make sure you replace the axle seals too while you have the axles out. Usually with just a carrier swap you don't have to re-shim it, but check backlash before and after just to be safe.

 

Don't drive this thing until you find out what is wrong with it. You could loose an axle if it continues to come apart. http://www.nastyz28.com/forum/showth...t=install+posi Read this and see if you think you can change it yourself. You must find out what gear ratio you have before you buy any parts. If you have a 2 series posi and you buy a 3 series then you wasted your money.

 

And of course if it's a Gov-Lock aka Grenade-Bomb you also wasted your money. Don't buy one of those.

 

lol im not, and mine wasnt LSD it was full posi cause when u make hard turns u can here one tire skip acrosed the pavement, thus being full posi, not LSD.

but i found 3.73 eaton posi 9 bolt rear that my friend has, im trading him my brand new engine stand for it since i have no use for it, its just taking space in my basement at the moment lol, plus in the futur if i ever need one i can buy a used on prolly

what yall think about the 3.73 eaton posi 9 bolt? over the factory posi 10 bolt?

and im not up for shiming and rebuidling a rear, i do not have access to a press or anything to rebuild it, its easier for me to pull the whole rear and swap it at the moment,

OF COURSE since my cars all numbers matching ill eventually rebuild it this year and put it back in lol, but full posi or locker, gta make it bullet proof tho lol

 

Limited slip and posi are the same thing.

3.73 is not 9-bolt gearing.

JamesC

 

there is no "full posi", because there is no "partial posi". Posi, limited slip, ect are all terms for the same type of equipment, just used my different manufactures.

if its working, and doesnt need a rebuild, has the brakes and cables and whatever, it will work.



if you pot a locker in it, its no longer number matching now is it?
it really doesnt matter, people get all strung out over numbers matching, and it really doesnt mean anything for most cars. they dont even have to be the original parts to be called "numbers matching", just parts with the right date codes and casting numbers for the year and build timeframe.

 

There is no Eaton Posi for the 9 bolt. There is only the Borg Warner LSD (posi). There are some 3.73 gears for the 9 bolt, but the 3.70 is much more comon.

 

yea guy didnt know what he had, when i went to go get it it was a 10 bolt for a 2nd gen, so im still stuck with a blown rear

but for $100 i can grab a one legger from my buddy, works fine just is drum brakes