Originally Posted by Toilets

Weak points is weight. Mine is gutted (except dash and AC) including a poly carb windshield and I'm still at 3230. If I go full on out drastic I think I can get another hundred out of it but I think that's it. It's definitely nice shaving 250 pounds from stock so far but it's still a big girl. Also if w2w, cooling upgrades are a must even for the z51. Z06 is very quirky so I'd steer away from that for w2w.

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Originally Posted by Bad_AX

Weight is still my big concern with the C7 GS arriving later this year. Compared to the C6 Z06, there is more mass in areas where it is difficult or impossible to deal with. I recall reading that direct injection added nearly 80 lbs. and the frame, while aluminum gained mass along with stiffness with the use of castings vs. extrusions or hydroforming. The C7 Z06 is further burdened with a supercharger and all the related cooling equipment and many expect to see additional cooling measures very soon which adds more mass. The car also has very high aero drag and there are many reports of a full tank of fuel not lasting for two 30 minute track sessions. Just focusing on the fuel burn highlights some of tradeoffs the engineers had to make to reach 650 hp within the packaging constraints. All those btu's of energy have to be dissipated somehow and it takes a lot of mechanical cooling equipment. I expect a lot of that fuel is consumed to cool the valves via a rich air fuel ratio.

Originally Posted by Bad_AX

The car also has very high aero drag and there are many reports of a full tank of fuel not lasting for two 30 minute track sessions. Just focusing on the fuel burn highlights some of tradeoffs the engineers had to make to reach 650 hp within the packaging constraints. All those btu's of energy have to be dissipated somehow and it takes a lot of mechanical cooling equipment. I expect a lot of that fuel is consumed to cool the valves via a rich air fuel ratio.