It always happens this way. Shortly after a new performance car is released to the public, it will find its way to a dyno shortly thereafter. When that new vehicle is the new performance king of the automotive world, aka the 2009 Corvette ZR1, our collective interest is piqued. So, how does it fare on the rollers? Two separate 'Vettes were tested, and the average output was about 535 horsepower at the rear wheels. After factoring in the normal 15-percent drivetrain losses for a rear-wheel drive car, that's pretty darn close to the claimed 638. After a bit of tinkering the team got that number up near 570, saying it's running a bit rich from the factory. Click here for the full graph.

Click above for a high-res gallery of the 2009 Chevrolet Corvette ZR1

Click the DR-1 above for a high-res gallery of the C4 ZR-1

Click above for high-res gallery of our ride in the Corvette ZR1

Chevrolet officially kicked off series production of the 2009 Corvette ZR1 at its Bowling Green KY assembly plant this week and decided to celebrate by inviting the media out to drive the new "King of the Hill". Since there are still several more waves of writers scheduled to drive the cars over the next week, we can't tell you what we thought of how it drives just yet. We can, however, share some photos of the cars we drove today around the Lutz-ring at General Motors' Milford Proving Ground. Stay tuned next Wednesday, August 20 for our full evaluation. In the meantime, enjoy the gallery and refresh your memory with our intro to the ZR1 from earlier this year.

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Click above for high-res gallery of the Corvette ZR1 with new pics