someone was telling me that Z28s came with posi... but.... im pretty sure (i think, havnt tested yet) only one tire spines on my car...(2000Z28) i may be wrong, ill mess around with it when i head to the track this weekend(will be first time! and get my friends to watch me or something) but is it true?!?!

cory, i did a search and couldnt find anything helpful

 

i thought z's and ss's came standard with a zexel torsen from 98-on or something?

 

Z28, Trans Ams, SSs, WS6s all have limited slip differentials.

 

if ur spinnin one wheel, theres a problem with ur diff..... ALL V8 fourth gens had a posi unit.

 

They are subject to wear out like any posi unit, but here is what had what:
'93-98 had an Auburn (clutch) posi, except for '96-'98 SLP built cars which opted for the optional HD Torsen.

'99-'02 cars had a Zexel Torsen (not the same as HD), except for SLP built cars that opted for the HD Auburn (not the same as the early Auburn).

The best mod I did to my car was a Torsen T2R high bias posi. $525 from stranoparts.com, but it puts power to both wheels every time.

 

Yup, what they said .... you should have a posi.

If you're going to the track for the first time, check out my Drag Racing Tips on my web site: www.BlackWS6.com

 

first off, since you have a 2000 Z, you do NOT have limited slip. You have a torsen. they are completely different designs.

spinning only one tire doesnot mean you have a problem. the torsen will act as an open diff unless there is sufficient resistance on both tires to "lock" the diff. this means that if you jack the car up, you will be able to spin one tire and the other will go in the opposite direction. but when you nail the gas the diff will lock, assuming you have enough traction on each tire. if one is on ice and the other dry pavement, then it will spin one tire. the same thing can happen on pavement if you dont have enough traction on each wheel.

 

freak---ur absolutley right....i meant if ur spinning one tire on a consistent basis....everybody who deosnt have a spool spins one tire once in awhile....i meant if you physically aren't able to do a two-wheel burnout ever....

 

94ZRiCeKiLr - You have never driven a car with a pre-loaded posi like the T2R. On wheel may spin less than the other, but it puts power to both even if one is in the air.

 

The Torsen differential* is a purely mechanical device; it has no electronics, clutches or viscous fluids.

The Torsen (from Torque Sensing) works as an open differential when the amount of torque going to each wheel is equal. As soon as one wheel starts to lose traction, the difference in torque causes the gears in the Torsen differential to bind together. The design of the gears in the differential determines the torque bias ratio. For instance, if a particular Torsen differential is designed with a 5:1 bias ratio, it is capable of applying up to five times more torque to the wheel that has good traction.

These devices are often used in high-performance all-wheel-drive vehicles. Like the viscous coupling, they are often used to transfer power between the front and rear wheels. In this application, the Torsen is superior to the viscous coupling because it transfers torque to the stable wheels before the actual slipping occurs.

However, if one set of wheels loses traction completely, the Torsen differential will be unable to supply any torque to the other set of wheels. The bias ratio determines how much torque can be transferred, and five times zero is zero.

*TORSEN is a registered trademark of Zexel Torsen, Inc.

Hummer!
The HMMVV, or Hummer, uses Torsen® differentials on the front and rear axles. The owner's manual for the Hummer proposes a novel solution to the problem of one wheel coming off the ground: Apply the brakes. By applying the brakes, torque is applied to the wheel that is in the air, and then five times that torque can go to the wheel with good traction.