Gassers were based on closed-body production models built during the 1930s to mid-1960s and raced from the 1950s until the 1970s. Non-essential items would be stripped away, reducing overall weight, and then fitted with a beam axle or tubular axle to help with weight distribution during acceleration. A raised stock front suspension was often a common setup. In the early-to-mid-1930s Willys were popular gassers.
by Dan Vaughan