 The formula used for the 1920 Indianapolis 500 limited the displacement to 3 liters, so Ernest Henry conceived, according to the same technical architecture, a new straight-eight engine of 2.97 liter displacement.The maximum speed of the car was slightly reduced to , but the usability further improved, and this time the Ballot entries finished second, fifth and seventh.The brand Ballot was the only one to represent France at the 1921 French Grand Prix at Le Mans in July, with three eight-cylinder cars and a new four-cylinder 2 liter engine designed by Ernest Henry also participated in the race.