Filthy Forty is a gasser of the 1960s.^[1]

Filthy Forty is a Chevrolet-powered 1940 Willys entered by the team of Hill & Zartman. It won the NHRA C/G national title at the 1963 NHRA Nationals, Indianapolis Raceway Park, with a pass of 12.70 seconds at 110.42 mph (177.70 km/h).^[2]