PORSCHE RACING HISTORYPorsche 911 Carrera RSR - Chassis No. 911 460 9048
2 February 1975 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | Jacques Bienvenue (CDN)/George Dyer (USA) | George Dyer (USA) | 4th | 4th | 12th | 665 laps |
1 February 1976 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | George Dyer (USA)/Michael Keyser (USA) | Heufeld Porsche (USA) | 71st | 37th | 7th | 5 laps - Engine |
2 May 1976 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | George Dyer (USA) | George Dyer (USA) | 4th | 4th | 9th | 51 laps |
3 October 1976 - Laguna Seca 100 Miles II - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | George Dyer (USA) | George Dyer (USA) | 39th | 32nd | 12th | 2 laos - DNF |
6 February 1977 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | George Dyer (USA)/Brad Frisselle (USA) | George Dyer (USA) | 4th | 2nd | 21st | 663 laps |
19 March 1977 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | George Dyer (USA)/Brad Frisselle (USA) | George Dyer Racing (USA) | 1st | 1st | 7th | 234 laps |
15 May 1977 - Mid-America 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 30 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | George Dyer (USA) | George Dyer (USA) | 2nd | 2nd | 4th | 35 laps |
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 32 | Porsche 911 Carrera RSR | 911 460 9048 | GTX | Steve Earle (USA)/Bob Akin (USA)/Rick Knoop (USA) | Earle & Akin Racing Associates (USA) | 7th | 5th | 18th | 632 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 32 | Porsche 911 Carrera RSR | 911 460 9048 | GTX | Steve Earle (USA)/Bob Akin (USA)/Rick Knoop (USA) | Earle & Akin Racing (USA) | 5th | 4th | 16th | 225 laps |
2 April 1978 - Talladega 6 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 32 | Porsche 911 Carrera RSR | 911 460 9048 | GTX | Steve Earle (USA)/Bob Akin (USA) | Earle & Akin Racing Associates (USA) | 5th | 4th | 19th | 159 laps |
8 July 1978 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 32 | Porsche 911 Carrera RSR | 911 460 9048 | Gr.5 | Steve Griswold (USA)/Bob Akin (USA) | Earle & Akin Racing Assoc. (USA) | 10th | 7th | 27th | 125 laps |
30 July 1978 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 32 | Porsche 911 Carrera RSR | 911 460 9048 | GTX | Steve Earle (USA) | Earle Akin Racing Associates (USA) | 24th | 13th | 12th | 9 laps - DNF |
26 April 1981 - Riverside 6 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 31 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | Tom Alan Marx (USA)/Dennis Lanfre (USA)/Bill Follmer (USA) | RSR Associates (USA) | 30th | 12th | 59th | 129 laps |
3 May 1981 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 31 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | Tom Alan Marx (USA) | Tom Alan Marx (USA) | 22nd | 7th | 32nd | 47 laps |
26 July 1981 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 31 | Porsche 911 Carrera RSR | 911 460 9048 | GTO | Tom Alan Marx (USA) | RSR Associates (USA) | 25th | 11th | 19th | 3 laps - Accident |