i have a 89 IRoc z..is there any posi rear ends that will swap right onto my car with no fab work..or is there atleast the posi unit itsself like the gears and stuff that will work into my stock diff..i really want a posi rear end

 

Do you have a 9 bolt or a 10 bolt diff?

 

its a 9 bolt rear end..

 

Yank it out and find a 10 bolt with a posi from a third or fourth gen. The 9 bolt is stronger but parts are non existent.

 

This man speaks the truth.

 

alright il try..well if i find a 10 bolt will all my suspenison stuff work with it same like the 9 bolt..what i mean is will everything bolt right up. like springs and everything? it also has rear disk brakes so does a 10 bolt have disc?

 

I BELieve that all parts from the 3rd gen rears and 4th gen rears should bolt right up the same as the 9 bolt. the only difference is most 4th gens have disk brakes so you would have to convert.not hard though its just a few brake lines. the 4th gens E- BRAKE are the only thing that doesn' fit perfectly but can be fabricated to work. also the 4th gens rears are about 3.5-3.8 inches wider than the 3rd gens so it looks like you have wider tires. do a search on this board you will find more info.
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does anyone know what rear ends 4th gen wise come with posi. is it any v8 93-02 camaro or firebird or was it an option? let me know how to tell statistically because i'm looking into buying one and i want to make sure it has posi .

 

my car has Disc rear brakes now..but yea i really would like to have a basic swap and not alot of FAb work seeing that im only 17 but im in auto tech 3 so i could do the work there and have good knowledge on cars just not in that part