When Formula A offered a 5-liter class in 1968, the series took off in the United States as the “American Grand Prix.” The springboard was the adoption of the Chevrolet V8, tuned by Traco to deliver more than 400 horsepower. Dan Gurney instructed All American Racers designer Tony Southgate to modify the 1968 Eagle Indy chassis for the new series.
Other competing manufacturers included Lola, McKee and Le Grande, but Gurney’s Eagle was more sophisticated. For 1969, Formula A was renamed the Continental Championship and the series was expanded to 13 races. For the 1969 series, Eagles won six races, with Tony Adamowicz beating Surtees-mounted David Hobbs to the championship. Eagle chassis number 510, the chassis presented here, would become Adamowicz’s championship ride.