Image engines will make up only about 1 percent of GM Powertrain products, Stephens says.
The 405-hp, LS6, 5.7-liter V-8 used in the 2004 Chevrolet Corvette Z06 is a prime example of an image engine.
For the 2004 model year, it is modified for Cadillac's CTS V performance sedan. The CTS version is rated at 400 hp and 390 pounds-feet of torque.
The V-12 engine first shown in the Cadillac Cien concept will top the image category.
Although the engine has been approved for production, GM is mum on its application. But Cadillac applications are expected this decade.
High-feature engines, meanwhile, appeal to enthusiasts and offer performance enhancements. For example, the engines reflect modifications to enhance fuel economy, reduce emissions or improve acceleration.
Listed below are the new engines debuting for the 2004 model year.