M6, It is an SS, so it has the performance axle option. I always assumed it was 3.23, but someone came up to me the other day claiming it should have 3.73, I don't think that's right, although it would be cool

I know this is kindof a newbie question, but I'm 99% sure I'm right. Just want backup on this. Car in sig.

 

3:42 is the rear ratio for all M6.

 

Damn, so we were both wrong! Well that's good to know for me. Thanks man. Orginally I did a search but couldn't come up with anything, because you basically get every post that has the word "gears" in it. I'm happy with 3:42

 

Yup, all M6s have a 3.42 final gear.

Autos with GU2 are 2.73
Autos with GU5 are 3.23 (Performance Axle)