I understand it's a Z06.... Why do you think i kept racking my brain to figure out whats going on? lol. Ok, I didn't contribute the extra 1000 rpms you have.

and the tires do make a difference. I read somewhere that the GTO, Z06 and the CTS-V have the same gear ratios in the tranny. I dont know if they were talking about the early C5's or the C6's though. My car goes to 68mph in 2nd gear at 6100 redline. So your car slightly higher gear(lower number) and taller tire is helping you alittle bit.

I want a Z06.
