cobra498
GT Owner
Yeah, the true weekend track dogs are the minority within the buying audience. Nevertheless, I would think that GM did their homework with respect to cooling. GM is now very, very familiar with the track at Spring Mountain - having accumulated easily 10's of thousands of miles there. We know they have to keep their game face, but the reality is that in the hot summer months the ZR1 simply cannot stay out on the track at ballistic output levels for very long. The C6 Z06 can. Let's hope the C7 Z06 in Z07 trim (this is getting confusing) has all of the needed cooling mods.
It is very interesting to note that GM opted to DOWNSIZE the SC from 2.2L on the C6 ZR1 to 1.7L on the new Z06.
Oh, and I think that GT500 on the same track on the same day would have to pit even sooner than the ZR1's for overheating problems.
Heat is a real problem with boost, my NA Cobra makes about 150 less crank HP than my GT with 26 lbs of boost but the Cobra will run all day without over heating, the GT might get 3 laps. I can get about 10-12 laps with my radiator sprayer but that is a huge PIA what with the water tank etc. I would bet that you could get close to 3100 lbs with a NA GT and boy would it handle.