GM trots out 'Vette with 620 horses

The Corvette ZR1 will be powered by a supercharged V8 producing at least 190 horsepower more than the standard version.

Light materials
Light materials
The ZR1's hood is made entirely of carbon fiber, a strong lightweight material. A clear polycarbonate window allows a view of a cover over the intercooler, which cools air coming in to the supercharger, allowing for higher compression and more power.

When the hood is open, the black weave of carbon fiber is visible on its underside. Carbon fiber is also used in the car's widened fenders, and it can be seen on the car's roof.

Last updated December 31 2007: 7:44 AM ET

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Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.