No, they're not that fast. You beat it, so I'm glad. If you didn't, then there'd be something wrong.
Chevrolet
Cobalt SS Supercharged: Standing
1/4-mile: 14.7 sec @ 97 mph
http://www.caranddriver.com/article....&page_number=2
Don't think I'm ragging on you, though. I'm just saying that they're not god's gift to automobiles. God's gift to ricers, maybe...
That engine is a good base, however. Take that supercharger off, and hang a turbo instead, and the stock internals will support 500whp all day.
If it's not forged in that engine, it's semi-forged. Sodium filled exhaust valves, GM did their homework on that engine, surprisingly.