By far the biggest mystery surrounding the hotly anticipated Corvette ZR1 is the type of engine Chevrolet's engineers intend to install. In late October, an eagle-eyed person with access to the GM Parts Catalog stumbled upon an LT7 listed as a turbocharged eight-cylinder mill with a 5.5-liter displacement. Well, that's no longer the case because the database has been updated to show an entirely different LT7, one that GM had back in the 1980s.
