How to tell what gears?

[SHORTYguy59]

Im looking at buying a 2000 Z28 A4. I want to know what gears it has either 2.73s or 3.23s? how can you tell? Do the majority of autos have 2.73 or 3.23?

Thanks

[Mr. Luos]

RPO GU2 - 2.73's
RPO GU5 - 3.23's

[67CamaroRSSS]

Also: Steel driveshaft = 2.73's; Aluminum driveshaft = 3.23's.

By now you never know though. My door sticker sez GU2 (and that's what it was when I bought it) but I now have 3.73's and an aluminum ds.

[fergyflyer]

Also: Steel driveshaft = 2.73's; Aluminum driveshaft = 3.23's.

By now you never know though. My door sticker sez GU2 (and that's what it was when I bought it) but I now have 3.73's and an aluminum ds.

Why the change to an aluminum driveshaft???

I'm just getting ready to change gears and now would be the right time. Thanks.

[cmb570]

did SS models use same gear throughout run, same with z28's.
do ss modes use the RPO GU5 - 3.23's , or is it all mix and match and check my code ?

[Mr. Luos]

Why the change to an aluminum driveshaft???

I think the better question is 'Why not?'

Lighter, pretty damn durable unless you are cutting 1.6xx or better at the track.

[67CamaroRSSS]

did ss models use same gear throughout run, same with z28's.
Do ss modes use the rpo gu5 - 3.23's , or is it all mix and match and check my code ?

A4 SS = 3.23; M6 SS = 3.42....

Dealer models (HotRod, Dale Earnhart, GMMG, etc), OTOH, generally used 3.73 for A4 and 4.10 for M6.

[67CamaroRSSS]

Why the change to an aluminum driveshaft???

I'm just getting ready to change gears and now would be the right time. Thanks.

See "Mr. Lous's" post above. I'd go with a carbon fiber driveshaft if I could justify the cost.

Remember: Reduced rotating mass = faster ET....