Cadillac unveils powerful 556-horsepower CTS-V Coupe

The 2011 CTS-V Coupe begins production in the summer of 2010 as Cadillac's most dramatic statement of design and performance.

CAPTION

By GM, Wieck

Cadillac unveiled the hot-rod version of its new coupe, the CTS-V, that raises the question of how much horsepower is enough. In the CTS-V Coupe's case, the answer is 556 and we're sure buyers would take more if they could get it.

Despite all the hoopla about gas mileage, the CTS-V coupe, arriving next week at the North American International Auto Show in Detroit, underscores how automakers are still using their new engine technology to make cars faster, even though speed limits haven't changed, rather than more gas thrifty. How powerful?

The CTS-V coupe employs the LSA 6.2-liter V-8 engine also found on the CTS-V sport sedan. It is most powerful engine offered in Cadillac's history and propels the CTS-V coupe from 0-60 mph in 3.9 seconds.

The LSA engine features an intercooled Eaton supercharger system, premium aluminum-alloy cylinder heads. The supercharger has a unique, four-lobe rotor design that enhances quietness.