PORSCHE RACING HISTORYPorsche 911 Carrera RSR - Chassis No. 911 360 0601
21 July 1973 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 70 | Porsche 911 Carrera RSR | 911 360 0601 | GT | Milt Minter (USA)/Bob Harmon (USA)/Bruce Jennings (USA) | Bob Harmon Racing (USA) | DNF | 18th | 83 laps - Brakes |
2 May 1976 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Bob Harmon (USA) | Bob Harmon (USA) | 38th | 24th | 32nd | 4 laps - DNF |
3 October 1976 - Laguna Seca 100 Miles II - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Robert Kirby (USA) | Giant Kirby Racing | 30th | 23rd | 26th | 36 laps - DNF |
12 June 1977 - Le Mans 24 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 77 | Porsche 911 Carrera RSR | 911 360 0601 | IMSA | Dennis Aase (USA)/Robert Kirby (USA)/John Hotchkis (USA) | Wynn's International | 20th | 6th | 50th | 247 laps |
30 July 1978 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 75 | Porsche 911 Carrera RSR | 911 360 0601 | GTX | Bob Harmon (USA) | 9th | 8th | 17th | 38 laps |
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Robert Kirby (USA)/John Hotchkis (USA)/Howard Meister (USA) | Casablanca Fan Co. | 36th | 14th | 37th | 328 laps - DNF |
3 February 1980 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Robert Kirby (USA)/John Hotchkis (USA)/John Hotchkis Jr. (USA) | Moana Corp. | 55th | 21st | 61st | 147 laps - DNF |
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Robert Kirby (USA)/Freddy Baker (USA)/Michael Sherwin (USA) | Kirby-Hitchcock Racing | 37th | 14th | 62nd | 153 laps - DNF |
26 May 1980 - Lime Rock 1.5 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | John Hotchkis (USA)/John Hotchkis Jr. (USA) | Kirby-Hitchcock Racing | 11th | 7th | 16th | 80 laps |
1 February 1981 - Daytona 24 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Siegfried Brunn (D)/Robert Kirby (USA)/John Hotchkis (USA) | Kirby-Hitchcock Racing | 32nd | 10th | 57th | 361 laps - DNF |
26 April 1981 - Riverside 6 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | Robert Kirby (USA)/John Hotchkis (USA) | Casa Blanca Fan | 16th | 5th | 37th | 168 laps |
3 May 1981 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 360 0601 | GTO | John Hotchkis Jr. (USA) | Robert Kirby | 34th | 17th | 36th | 18 laps - DNF |