| 1970 | 10 | Gelo Racing Team (D) / North American Racing Team | Ferrari 512 S | S | Goodyear | — | — | retired | 54 | Helmut Kelleners / Georg Loos |
| 1970 | 11 | North American Racing Team | Ferrari 512 S | S | Goodyear | 4. | 3. | classified | 313 | Ronnie Bucknum / Sam Posey |
| 1970 | 12 | Ecurie Francorchamps | Ferrari 512 S | S | Firestone | 5. | 4. | classified | 305 | Hughes de Fierlant / Alistair Walker |
| 1970 | 14 | Scuderia Filipinetti | Ferrari 512 S | S | Goodyear | — | — | retired | 36 | Jo Bonnier / Reine Wisell |
| 1970 | 15 | Scuderia Filipinetti | Ferrari 512 S | S | Goodyear | — | — | retired | 37 | Mike Parkes / Herbert Müller |
| 1970 | 16 | Scuderia Filipinetti (CH) / Scuderia Picchio Rosso | Ferrari 512 S | S | Goodyear | — | — | retired | 111 | Giampiero Moretti / Corrado Manfredini |
| 1970 | 5 | SpA Ferrari SEFAC | Ferrari 512 S | S | Firestone | — | — | retired | 142 | Jacky Ickx / Peter Schetty |
| 1970 | 6 | SpA Ferrari SEFAC | Ferrari 512 S | S | Firestone | — | — | retired | 7 | Nino Vaccarella / Ignazio Giunti |
| 1970 | 7 | SpA Ferrari SEFAC | Ferrari 512 S | S | Firestone | — | — | retired | 39 | Derek Bell / Ronnie Peterson |
| 1970 | 8 | SpA Ferrari SEFAC | Ferrari 512 S | S | Firestone | — | — | retired | 38 | Arturo Merzario / Clay Regazzoni |
| 1970 | 9 | Escuderia Montjuich | Ferrari 512 S | S | Firestone | — | — | retired | 130 | José-Maria Juncadella / Juan Fernandez |
| 1971 | 14 | North American Racing Team | Ferrari 512 S | S | Goodyear | — | — | retired | 3 | Masten Gregory / George Eaton |