For the 1957 Daytona Speed Weeks, Ford prepared an amarda of special cars including 15 supercharged versions of the Thunderbird. That weekend Harold Mauck ran 138.755 mph for the Two-Way Flying Mile and Ford subsequently put the F-Code supercharged Thunderbird into production.
The D/F-Code was part of a Ford Motor Company Supercharger Program to homologate Ford’s superchargers into NASCAR. As part of 100 supercharged cars, they made 15 Thunderbirds. These had their radio, heater, clock and lighter deleted as well as black tires, no fender skirts and small hubcaps.
All 15 cars were built on January 25, 1957 using a single carburetor engine, McCulloch VR57 Phase 1 supercharger and a heavy duty three-speed manual transmission.
