I have a 2000 Z28 Auto and i am just wondering what the stock gears are in the rear? and what is a good gear to upgrade too?

 

Look on the driver side door or inside the glove box for the build sticker with codes. If you see GU2 you have 2:73 if you see GU5 you have 3:23. A good gear ratio to upgrade to is 3:73. Hope this helps.

Curt

 

Ditto ...


For the A4, changing the rear to a 3.73 ratio will really wake up your car. And, if you REALLY want to go fast off the line, do a 3.73 rear and a 3000 stall TC. If I still had the Z28, that's what would have been installed.

 

Ok i went out and checked the RPO's and i have the 2.73 gears which blows monkey *****. So i wanna do the 3.73 gears.....

Who is a good brand to go with and how hard is it to do? Any help is appreciated...I live in McHenry Illinois if there is anyone local around me

 

if you look at the shifter console and it has 1 2 d od n p than you have the performance rear axle which is 3.23 if it just says 2 d od n p than you have the 2.73. now if anyone knows for a fact that this isn't so please let me know because this is what i gathered from an article that i read awhile ago.

 

if you do get the 3.73 gears you might want to save up and buy some bigger tires you might get a slower time do to excessive tire cooking

 

Nope I have 1,2,d, od and have 2.73s

 

but what brand do i go with for the gears? I know SLP sells the 3.73 gears and the install kit but i was just wondering if there were any other brands that are maybe better.

 

I have 2, d , od, and have 2.73s

 

are 100% sure because i read something in a gmhtp and it from what it sounded like you would only see a 1 in the gear select column if your car came with the performance axle ratio wich would mean it has 3.23's in it.