A gasser is a type of hot rod originally used in what form of racing?

A gasser is a type of hot rod originally used for drag racing.

Gassers emerged in the United States in the late 1950s and remained prominent through the early 1970s. They were based on closed-body production cars, often from the 1930s through the mid-1960s, but were stripped of weight and fitted with more powerful engines.

Their raised front ends helped transfer weight to the rear wheels during hard acceleration. Fiberglass panels, Lexan windows, ladder bars, fuel injection and Roots superchargers were common features. The lightweight 1933–36 Willys coupe became one of the best-known gasser platforms.

The name referred to the gasoline-fueled classes in which these cars competed, distinguishing them from cars powered by methanol or nitromethane. NHRA eliminated its gas classes in 1972, although gasser-style cars remain part of drag-racing history and nostalgia events.