| 1959 | 5th (3rd GT 2001/3000) | 16 | Ferrari 250 GT California | Bob Grossman/Fernand Tavano |
| 1961 | 6th (2nd GT 2001/3000) | 20 | Ferrari 250 GT | Bob Grossman/André Pilette |
| 1962 | 6th (1st Exper.2501/3000) | 17 | Ferrari 250 GTO | Bob Grossman/Fireball Roberts |
| 1963 | 9th (2nd GT 3001/4000) | 15 | Jaguar E-Type "Lightweight" | Briggs Cunningham/Bob Grossman |
| 1964 | 9th (3rd GT 2001/3000) | 27 | Ferrari 250 GTO/64 | Fernand Tavano/Bob Grossman |
| 1968 | Did not started | 15 | Ferrari 275 GTB/2 | Bob Grossman/Edgar Berney |
| 1971 | 5th (5th Sport) | 58 | Ferrari 365 GTB 4 | Luigi Chinetti Jr./Bob Grossman |
| 1973 | Abandon | 36 | Ferrari 365 GTB 4 | Lucien Guitteny/Bob Grossman |
(United States of America) 
