Originally Posted by Lee9710
It will eat the Shelby with only the 556......the CTS V does that with extra weight. Hell.....I ate Shelbys with 550 in my SS.
True, but the issue is that the Shelby that they bring to market shortly after the ZL1 is going to be a whole other animal. I don't know how much they'll address the traction issues, but rumors are 600+hp.
That's the target the ZL1 will have to compete with, not the old model.