PORSCHE RACING HISTORYHarald Grohs (D)
1982 : Riverside 6 Hours - 2nd overall : Silverstone 6 Hours - 3rd in class
25 April 1982 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 935 L | 935 L | GTP | Al Holbert (USA)/Harald Grohs (D) | Andial/Meister Racing (USA) | 2nd | 2nd | 46th | 190 laps |
16 May 1982 - Silverstone 6 Hours - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 63 | Porsche 935 J | 000 00016 | Gr.5 | Harald Grohs (D)/Dieter Schornstein (D) | Vegla Racing Team | 12th | 3rd | 18th | 209 laps |
30 May 1982 - Nürburgring 1000 km - World Endurance Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 36 | Porsche 935 K3 | 930 890 0015 | Gr.5 | Claude Haldi (CH)/Bernard Béguin (F)/Harald Grohs (D) | Claude Haldi | DNF | 13th | 12 laps - Engine |