Ratio?

**Crusty** · 10-18-2009, 06:27 PM

What rear end ratio are usually in a 2002 ws6? Mine has no tag..My 2002 z28 had 2.73's and my T/A feels alot lower than that to me.

**35th-ANV-SS** · 10-18-2009, 06:29 PM

I think I remember you saying in another thread you are a M6 so it would be 3.42

**02transamce** · 10-18-2009, 06:40 PM

2.73 and 3.27 on automatics,3.42 on manual as mentioned above.

**Crusty** · 10-18-2009, 06:41 PM

Automatic...

**02transamce** · 10-18-2009, 06:51 PM

i would guess 3.27,that's how my 02 ws-6 is optioned.

**Crusty** · 10-18-2009, 06:58 PM

Cool thanks guys. Didnt want to pull the cover off. lol Wonder if i put a 3.42 in it if it would that big of difference at the track. I drive it everyday so i dont wanna go to deep. Just a thought

**35th-ANV-SS** · 10-18-2009, 07:02 PM

Rule of thumb is 373 for A4 and 411 for M6.

Gears really depend on what your future plans on for the car.

**allbaugh_04** · 10-18-2009, 07:05 PM

Check your door codes. No sense in guessing. Also, what are your RPMS at 60mph. Another easy way to tell if you are on stock tires.

**02transamce** · 10-18-2009, 07:06 PM

there is a rpo code on the inside drivers door that will tell you exactly what gear your t/a was born with,i just can't remember it,probably can be found in the drivetrain tech section.i am gonna put a 3.42 in mine in the near future.

**Crusty** · 10-18-2009, 07:12 PM

Cool i will look in the morning and check rpms on the way to work.. I cant remember for sure..but I do have stock tires so far.

**Crusty** · 10-19-2009, 04:54 PM

1800 rpms at 60 mph. Called the VIN in to dealer they said 3.23 so problem solved THanks

**pajeff02** · 10-19-2009, 05:42 PM

^^ Dealer is correct, the auto should have 3.23's. On your driver door are the RPO codes for your car. You can decode most of them at this site: http://www.marshu.com/ws6-firebird-c...codes-2000.php If I recall, GU5 is the code for a 3.23 rear axle.

**Crusty** · 10-19-2009, 06:25 PM

Originally Posted by pajeff02

^^ Dealer is correct, the auto should have 3.23's. On your driver door are the RPO codes for your car. You can decode most of them at this site: http://www.marshu.com/ws6-firebird-c...codes-2000.php If I recall, GU5 is the code for a 3.23 rear axle.

Cool i will check it out...Thanks