PORSCHE RACING HISTORYRichard Petty (USA)
b. 2 July 1937 (Level Cross, North Carolina, U.S.) - d.
Wikipedia
Richard Lee Petty nicknamed "The King"
19731973
27 October 1973 - IROC Riverside 1 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 10 | Porsche 911 Carrera RSR | 911 460 0042 | Richard Petty (USA) | Roger Penske (USA) | 7th | 8th | 30 laps |
27 October 1973 - IROC Riverside 2 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 911 Carrera RSR | 911 460 0050 | Richard Petty (USA) | Roger Penske (USA) | 10th | 6th | 29 laps - Accident |
28 October 1973 - IROC Riverside 3 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 10 | Porsche 911 Carrera RSR | 911 460 0025 | Richard Petty (USA) | Roger Penske (USA) | 10th | 3rd | 19 laps - Throttle Linkage |