PORSCHE RACING HISTORY1974 - IROC Daytona
14 February 1974 - Daytona International Speedway, USA
Mark Donohue wins in a Porsche 911 Carrera RSR
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 911 Carrera RSR | 911 460 0090 | Mark Donohue (USA) | Roger Penske (USA) | 1st | 1st | 25 laps | ||
| 2 | Porsche 911 Carrera RSR | 911 460 0050 | Peter Revson (USA) | Roger Penske (USA) | 2nd | 2nd | 25 laps | ||
| 5 | Porsche 911 Carrera RSR | 911 460 0059 | Bobby Unser (USA) | Roger Penske (USA) | 3rd | 5th | 25 laps | ||
| 3 | Porsche 911 Carrera RSR | 911 460 0116 | David Pearson (USA) | Roger Penske (USA) | 4th | 3rd | 23 laps | ||
| 4 | Porsche 911 Carrera RSR | 911 460 0016 | George Follmer (USA) | Roger Penske (USA) | 5th | 4th | 13 laps - Transmission | ||
| 6 | Porsche 911 Carrera RSR | 911 460 0085 | A. J. Foyt (USA) | Roger Penske (USA) | 6th | 6th | 2 laps - Engine |
IROC - International Race of Champions
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