El Zonda San Juan: Ernesto Brambilla, Ferrari Dino 166, leads Jean-Pierre Beltoise, Matra MS7 Ford, Piers Courage, Brabham BT23C Ford, Henri Pescarolo, Matra MS7 Ford, Alan Rees, Brabham BT23C Ford, and Clay Regazzoni, Tecno PA68 Ford.
Ernesto Brambilla, Ferrari Dino 166, leads Jean-Pierre Beltoise, Matra MS7 Ford, Piers Courage, Brabham BT23C Ford, Henri Pescarolo, Matra MS7 Ford, Alan Rees, Brabham BT23C Ford, and Clay Regazzoni, Tecno PA68 Ford.