PORSCHE RACING HISTORY1978 - Vallelunga 400km
14 May 1978 - Circuito di Vallelunga, Italy
Reinhold Joest & Mario Casoni win in a Porsche 908/03
Overall - 1st : Gr.6 - 1st
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 908/03 | 908/03-008 | Gr.6 | Reinhold Jöst (D)/Mario Casoni (I) | Liqui Moly Equipe (D) | 1st | 1st | 1st | 125 laps |
European Sportscar Championship
Previous 1978 - Hallett 100 Miles Next 1978 - Silverstone 6 Hours