I wanted to buy a hole new rear end assebly (7.5" disks, calipers, rotors, shocks, axle, differential, etc), but that was like $300 used...Could I just buy a differential, or won't that work? Nobody has been able to give me an answer on if the 3.4L axle could hold up to the LT1? Also, is there a way to put a posi (or limited slip) differential on a one wheel peel axle (I don't know the difference in axles, is there any?)?

 

the rear ends i beleive are all the same, the 7.5" 10 bolt. you could buy the SLP diff for it, i think it's only $100 or so.
and the drive shafts should be the same, if not you coud find a steel one from an LT1 for cheap or splurg and get an LS1 for $120-150.

 

i got a steel shaft for sale... make me an offer
Marcin

 

Yes you can install a posi into your rear end and the lt1/v6 rear ends are the same exept for missing the posi. Use a one piece driveshaft if you don't have one. I am still using the v6 rear and drum brakes with no problems. Adds to the sleeper effect

 

thanks guys for the fast replies...i bought a 1 peice ds a long time ago. so the SLP 10 bolt is about $100? does that come w/ 2.73? i want to get 3.73 (thats like another $150 or so?).

 

The posi from slp does not come with gears. If you currently have 273 gears you would need to upgrade to a 3 series carrier and get new gears and an install kit.

 

Not the differential, the POSI. As was posted above, you can buy just the posi from SLP for about $100. Also, as posted above, the rears are the same between the V6 and LT1 cars.

-Chris

 

Chrisbequick, oh, i got ya...

94-3.4, how much does the new carrier cost (the carrier is just the differential, isn't it?)...and then i need the gears w/ an install kit?...so, how much do you guys think it'll cost me to get posi in my car w/ and w/o 3.73?

 

I am pretty sure slp and some other venders sell complete gear kits. Aftermarket posi's are pricey, in the $300+ range as well. I am not sure as far as the carrier goes because i have never had one apart. You might want to just look into a used 10 bolt with 342 gears and a posi. I see them around the $250 range for sale often. Might be cheaper in the long run.