In the 1977 Indianapolis 500, Foyt ran out of fuel, and had to make a pit stop. He had to make up around 32 seconds on Gordon Johncock. Foyt made up 1.5 to 2 seconds per lap by turning up his turbo boost, which risked destroying the engine. Johncock's own engine expired just as Foyt had closed to within eight seconds after both drivers' final pit stops, and Foyt passed for the win.