Seven Marine has taken a 376-cubic-inch General Motors engine used in the Cadillac CTS-V and hung it off the transom of an Intrepid 370 Cuddy. In fact, it's hung two of them.
Seven Marine's 557-hp outboard, which weighs 1,000 pounds and has an estimated retail price of $68,900, was the talk of the Miami International Boat Show.
The Intrepid that was on display has been powered with a variety of engine packages, including triple 275s, 300s and 350s, says company president Ken Clinton. The twin 557-hp outboards could push the boat to 80 mph or faster, according to the company. It's the industry's first production-built, joystick-controlled outboard boat.
http://www.soundingsonline.com/news/dispatches/832-march-4-2011/279752-video-outboards-like-no-others
