| 1st | 3 | Arturo Merzario / Mario Andretti | Alfa Romeo T33/TT/12 | Autodelta SpA | 1:28.2600 |
| 2nd | 2 | Henri Pescarolo / Gérard Larrousse | Matra-Simca MS670C | Equipe Gitanes | 1:29.2000 |
| 3rd | 6 | Carlo Facetti / Andrea de Adamich | Alfa Romeo T33/TT/12 | Autodelta SpA | 1:29.7000 |
| 4th | 1 | Jean-Pierre Beltoise / Jean-Pierre Jarier | Matra-Simca MS670C | Equipe Gitanes | 1:29.8000 |
| 5th | 4 | Jacky Ickx / Rolf Stommelen | Alfa Romeo T33/TT/12 | Autodelta SpA | 1:30.8400 |
| 6th | 7 | Derek Bell / Mike Hailwood | Mirage Gulf GR7 Ford | Gulf Racing | 1:31.1600 |
| 7th | 9 | Pino Pica / Giorgio Pianta | Lola T282 Ford | Jolly Club | 1:33.2700 |
| 8th | 21 | Vittorio Brambilla / Jean-Louis Lafosse | Abarth-Osella PA2 | Abarth-Osella | 1:38.1300 |
| 9th | 37 | Silvio Moser / Antonio Nicodemi | Lola T294 BMW | Bretscher Racing | 1:39.0100 |
| 10th | 11 | Guy Chasseuil / Michel Leclère | Ligier JS2 Maserati | Automobiles Ligier | 1:39.9500 |
| 11th | 22 | Alberto Rosselli / Nanni Galli | Abarth-Osella PA2 | Mugello Corse | 1:40.4000 |
| 12th | 8 | Gijs van Lennep / Herbert Müller | Porsche Carrera RSR Turbo | Martini Racing Team | 1:40.4200 |
| 13th | 14 | Reinhold Jöst / Mario Casoni | Porsche 908/03 | Joest Racing | 1:40.6400 |
| 14th | 12 | Jacques Laffite / Alain Serpaggi | Ligier JS2 Maserati | Automobiles Ligier | 1:42.6800 |
| 15th | 24 | Manfred Mohr / Martino Finotto | AMS 274 Ford | Jolly Club | 1:43.2200 |
| 16th | 41 | Philipp Gantner / Knut-Holger Lehmann | Lola T292 BMW | Joest Racing | 1:44.2800 |
| 17th | 52 | Paolo Monti / Peter Smith | Chevron B23 Ford | Peter Smith | 1:44.3200 |
| 18th | 33 | Laurent Ferrier / "Gimax" | Chevron B23 Ford | Michel Dupont | 1:44.9700 |
| 19th | 15 | Roland Heiler / Gerhard Schüler | Porsche 908/03 | Joest Racing | 1:45.0200 |
| 20th | 38 | Hervé LeGuellec / Roger Heavens | Lola T294 Ford | Escuderia Montjuich | 1:45.6500 |
| 21st | 45 | Giovanni Morelli / Mauro Nesti | Lola T294 Ford | Scuderia S. Michele | 1:47.1200 |
| 22nd | 94 | Giovanni Borri / Giorgio Schön | Porsche Carrera RSR | Jolly Club | 1:47.2500 |
| 23rd | 88 | Ennio Bonomelli / Michael Keyser / Giuseppe Schenetti | Porsche 911 Carrera RSR 3.0 | Ennio Bonomelli | 1:47.2900 |
| 24th | 87 | John Fitzpatrick / Georg Loos / Jürgen Neuhaus | Porsche 911 Carrera RSR | Gelo Racing | 1:47.5000 |
| 25th | 26 | Paul Blancpain / Michel Dupont | Chevron B26 Ford | Michel Dupont | 1:47.7300 |
| 26th | 95 | Paul Keller / Hans Heyer | Porsche 911 Carrera RSR 3.0 | Samson Kremer Team | 1:47.8000 |
| 27th | 31 | Robin Smith / John Blades | Chevron B23 Ford | Robin Smith | 1:47.9500 |
| 28th | 96 | Willi Kauhsen / Clemens Schickentanz | Porsche 911 Carrera RSR 3.0 | Samson Kremer Team | 1:48.2000 |
| 29th | 63 | "Pal Joe" / Duilio Truffo | Abarth-Osella 1300 | "Pal Joe" | 1:49.2000 |
| 30th | 59 | Luigi Pozzo / Pier Giorgio Mussa | GRD S74 Ford | Monzeglio | 1:50.0500 |
| 31st | 86 | Jürgen Neuhaus / Franz Pesch | Porsche 911 Carrera RSR 3.0 | Gelo Racing | 1:50.2500 |
| 32nd | 28 | Achille Marzi / Luigi Moreschi | Chevron B23 Ford | Achille Marzi | 1:50.3000 |
| 33rd | 92 | Eberhard Sindel / Sepp Greger | Porsche Carrera RSR | Sepp Greger | 1:51.4000 |
| 34th | 51 | Gabriele Serblin / Paolo Bozzetto / Mario Nardari | March 74S BMW | Trivellato | 1:50.3000 |
| 35th | 35 | Ray Fallo / Max Cohen-Olivar | Lola T294 Ford | Supercar | 1:55.8700 |
| 36th | 46 | Giancarlo Gagliardi / "Pooky" | Lola T292 Ferraris | Scuderia Brescia Corse | 1:55.9500 |
| 37th | 62 | Eris Tondelli / Achille Soria | Chevron B26 Ford | Eris Tondelli | 1:58.7100 |
| 38th | 27 | Pasquale Anastasio / Giovanni Boeris | Chevron B23 Ford | Pasquale Anastasio | 2:03.0200 |
| 39th | 58 | Roby Filannino / Giuseppe Piazzi | Dallara 1600 Ford | Roberto Filannino | 2:03.7800 |
| 40th | 34 | Franco Pilone / Renzo Zorzi | GRD S73 Ford | Monzeglio | 2:05.2700 |
| 41st | 89 | Bernard Chenevière / Peter Zbinden | Porsche 911 Carrera RSR 3.0 | Porsche Club Romand | 1:51.6400 |
| 42nd | 91 | Mario Ilotte / Claude Haldi / Juan Fernandez / Claude Ballot-Léna | Porsche 911 Carrera RSR 3.0 | Porsche Club Romand | 1:52.3100 |
| 43rd | 93 | "Tambauto" / "Gianfranco" | Porsche Carrera RSR | Brescia Corse | 1:54.5800 |
| 44th | 5 | Rolf Stommelen / Teodoro Zeccoli | Alfa Romeo T33/TT/12 | Autodelta SpA | 1:56.8300 |
| 45th | 81 | Marcello Gallo / Mario Radicella | De Tomaso Pantera | Blue | 2:07.1000 |
| 46th | 56 | Marco Crosina / Ermanno Pettiti | Chevron B21 Ford | "Mici" | 2:17.2600 |
| 47th | 82 | Cox Kocher / Ruedi Eggenberger | De Tomaso Pantera | Herbert Müller | 2:12.8300 |
| 48th | 43 | Franco Berruto / Leandro Terra | Lola T290 Ford | Brescia Corse | 2:16.3100 |
| 49th | 32 | Ian Harrower / Nigel Clarkson | Chevron B21 Ford | Ian Harrower | 2:24.1600 |
| 50th | 25 | Luciano Verrocchio / Massimo de Antoni | AMS 274 Ford | Jolly Club | 2:31.9900 |
| 51st | 61 | Sergio Rombolotti / Tiziano Serattini | Ferraris | Brescia Corse | 2:24.7100 |
| 52nd | 49 | "Tatog" | March 74S BMW | Achille Voltolina | 2:53.9900 |