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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.

By Peter Valdes-Dapena CNNMoney.com staff writer

2 of 6

Muscular engine

The ZR1's supercharged engine is designed to provide lots of power at low engine speeds but also to stay strong through the top of the engine's RPM limit.

The supercharger's intercooler, which cools air flowing in to allow for higher compression, is visible through a clear poly-carbonate panel in the hood.

It has a new six-speed transmission that has been strengthened to deal with the engine's high power output.

Last updated December 31 2007: 7:44 AM ET

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Mattel invited car designers who usually work on big cars to try their hand at the tiny one-buck-each variety. See the results here, then in toy stores soon. (more)

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