| Pos |
No |
Pilote |
Voiture |
Temps |
| 1 | 30 | Ronnie Peterson/Tim Schenken | Ferrari 312PB | 1:58,590 |
| 2 | 6 | Toine Hezemans/Rolf Stommelen | Alfa Romeo 33TT3 | 1:58,900 |
| 3 | 28 | Jacky Ickx/Mario Andretti | Ferrari 312PB | 1:58,980 |
| 4 | 32 | Clay Regazzoni/Brian Redman | Ferrari 312PB | 1:59,150 |
| 5 | 12 | Reine Wisell/Gérard Larrousse | Lola T280 Ford | 1:59,180 |
| 6 | 4 | Andrea de Adamich/Nanni Galli | Alfa Romeo 33TT3 | 1:59,600 |
| 7 | 14 | Gérard Larrousse/Chris Craft | Lola T280 Ford | 2:02,660 |
| 8 | 22 | Arturo Merzario/Spartaco Dini | Abarth SE021 | 2:04,000 |
| 9 | 10 | Carlo Facetti/Giovanni Alberti | Alfa Romeo T33/3 | 2:04,300 |
| 10 | 8 | Nino Vaccarella/Carlos Pairetti | Alfa Romeo T33/3 | 2:04,420 |
| 11 | 24 | Dieter Quester/Alex Soler-Roig | Abarth SE021 | 2:04,470 |
| 12 | 36 | John Hine/José Juncadella | Chevron B19 Ford | 2:04,750 |
| 13 | 2 | Vic Elford/Helmut Marko | Alfa Romeo 33TT3 | 2:05,420 |
| 14 | 26 | Jorge Ternengo/Claudio Francisci | Abarth SE021 | 2:06,330 |
| 15 | 40 | Juan Fernandez/Jorge de Bagration | Porsche 908/03 | 2:06,470 |
| 16 | 46 | Wilson Fittipaldi/José Renato Catapani | Lola T212 Ford | 2:06,680 |
| 17 | 20 | Jorge Cupeiro/Hughes de Fierlant | Lola T212 Ford | 2:07,340 |
| 18 | 16 | Gianpiero Moretti/Carlos Ruesch | Lola T212 Ford | 2:07,340 |
| 19 | 42 | Georges Dumoing/Jean-Louis Lafosse | Lola T212 Ford | 2:07,780 |
| 20 | 44 | Carlos Pace/Angel Monguzzi | AMS 1300 Ford | 2:10,130 |
| 21 | 34 | Niki Bosch/John Bridges | Chevron B19 Ford | 2:12,350 |
| 22 | 38 | Eris Tondelli/Carlos Pascualini | Chevron B19 Ford | 2:16,260 |
| 23 | 18 | Hector Luis Gradassi/Emilio Bertolini | Lola T212 Ford | 2:17,280 |
| 24 | 48 | Nestor Garcia-Veiga/Luis di Palma | Berta LR Ford | 2:21,570 |
|
1000 km de Buenos Aires 1972