PORSCHE RACING HISTORYChassis No. 000 00023
15 June 1980 - Le Mans 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 70 | Porsche 935 K3/80 | 000 00023 | IMSA | John Fitzpatrick (GB)/Brian Redman (GB)/Dick Barbour (USA) | Dick Barbour (USA) | 5th | 1st | 2nd | 318 laps |
5 July 1980 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3/80 | 000 00023 | Gr.5 | John Fitzpatrick (GB)/Brian Redman (GB) | Dick Barbour Racing (USA) | 3rd | 3rd | 6th | 134 laps |
27 July 1980 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3/80 | 000 00023 | GTX | John Fitzpatrick (GB) | Dick Barbour Racing (USA) | 1st | 1st | 2nd | 40 laps |
3 August 1980 - Portland 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3/80 | 000 00023 | GTX | John Fitzpatrick (GB) | Dick Barbour Racing (USA) | 1st | 1st | 1st | 53 laps |
17 August 1980 - Mosport 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3/80 | 000 00023 | GTX | John Fitzpatrick (GB)/Brian Redman (GB) | Dick Barbour Racing/Sachs USA (USA) | 1st | 1st | 1st | 245 laps |
31 August 1980 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3/80 | 000 00023 | GTX | John Fitzpatrick (GB)/Dick Barbour (USA) | Dick Barbour Racing (USA) | 2nd | 2nd | 2nd | 125 laps |
21 September 1980 - Road Atlanta 50 Miles - Heat 1 - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3/80 | 000 00023 | GTX | John Fitzpatrick (GB) | Dick Barbour Racing (USA) | 1st | 1st | 1st | 20 laps |
21 September 1980 - Road Atlanta 50 Miles - Heat 2 - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 6 | Porsche 935 K3/80 | 000 00023 | GTX | John Fitzpatrick (GB) | Dick Barbour Racing (USA) | 2nd | 2nd | 1st | 13 laps |