PORSCHE RACING HISTORYGeorge Drolsom (USA)
1978 : Daytona 24 Hours - 2nd in class : Talladega 6 Hours - 3rd in class : Mid Ohio 250 Miles - 3rd in class
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA)/Mark Greb (USA) | Drolsom Racing (USA) | 12th | 2nd | 57th | 592 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA) | Drolsom Racing Inc. (USA) | 44th | 21st | 67th | 98 laps - Engine |
2 April 1978 - Talladega 6 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA) | Drolsom Racing (USA) | 10th | 3rd | 23rd | 149 laps |
18 June 1978 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 34 | Porsche 911 S | GTU | George Drolsom (USA) | Drolsom Racing (USA) | 20th | 5th | 34th | 29 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA) | Drolsom Racing (USA) | 26th | 12th | 51st | 55 laps |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Mark Greb (USA) | Drolsom Racing (USA) | 17th | 3rd | 35th | 93 laps |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 34 | Porsche 911 S | GTU | George Drolsom (USA) | Drolsom Racing (USA) | 28th | 5th | 56th | 55 laps |