Mad Dog IVBill France posted an award of $10,000 to anyone who could post a speed in excess of 180 mph on a closed course speedway. Bob Osiecki of Charlotte, NC took up the challenge. Osiecki installed a supercharger Dodge 413 cubic-inch engine in an Indy roadster. Then he designed and installed a vertical stabilizer and a pair of inverted airfoils, or upside-down wings, to the chassis to aerodynamically stabilize the vehicle at speed.On August 28, 1961, Art Malone drove the 'Mad Dog IV' to a world record speed of 181.561 mph at Daytona International Speedway. The car is owned by Mary Ann Osiecki and is on loan to the North Carolina Auto Racing Hall of Fame.
The body is constructed from aluminum and powered by a Chrysler 413 460-cubic-inch engine. There are drum brakes and Firestone tires.
1961 Watson Mad Dog IV Vehicle Profiles
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