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.

American supercar
American supercar
The Chevrolet Corvette has long been known as a superb performance value, offering speed and handling that would cost you twice as much in a European sports car.

With the ZR1, which will be officially unveiled at the Detroit Auto Show in January, General Motors is taking the Corvette into supercar territory with a supercharged V8 that, GM says, will produce at least 620 horsepower.

In contrast, the base model Corvette is powered by a 6.2-liter, 430 horsepower V8, while the high-performance Corvette Z06 is powered by a 7.0-liter, 505 horsepower engine.

"Chevrolet's goal with the ZR1 is to show that an American supercar can deliver, at a price that trumps exotics that cost two, three, or four times as much - and does so with exceptional driveability," said Chevrolet general manager Ed Peper in a GM announcement.

Last updated December 31 2007: 7:44 AM ET

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Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer LIBOR Warning: Neither BBA Enterprises Limited, nor the BBA LIBOR Contributor Banks, nor Reuters, can be held liable for any irregularity or inaccuracy of BBA LIBOR. Disclaimer. Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.