PORSCHE RACING HISTORYDon Whittington (USA)
1979 : Daytona 24 Hours - 3rd in class : Road Atlanta 100 Miles - 3rd overall : Riverside 6 Hours - 1st overall : Hallett 100 Miles - 3rd overall : Le Mans 24 Hours - 1st overall : Watkins Glen 6 Hours - 1st overall : Mid-Ohio 250 Miles - 2nd overall : Daytona Finale 250 Miles - 2nd overall
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/79 | 930 990 0026 | GTX | Don Whittington (USA)/Bill Whittington (USA)/Jürgen Barth (D) | Whittington Bros (USA) | 4th | 3rd | 6th | 622 laps |
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/79 | 930 990 0026 | GTX | Bill Whittington (USA)/Don Whittington (USA) | Whittington Bros. Racing (USA) | 42nd | 13th | 6th | 104 laps - Accident |
8 April 1979 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 3rd | 3rd | 5th | 39 laps |
22 April 1979 - Riverside 6 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/79 | 930 990 0026 | GTX | Don Whittington (USA)/Bill Whittington (USA) | Whittington Brothers Racing (USA) | 1st | 1st | 7th | 195 laps |
29 April 1979 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 4th | 4th | 23rd | 52 laps |
13 May 1979 - Hallett 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 3rd | 3rd | 2nd | 55 laps |
28 May 1979 - Lime Rock 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 12th | 8th | 3rd | 59 laps - DNF |
10 June 1979 - Le Mans 24 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 41 | Porsche 935 K3 | 009 00015 | Gr.5+2.0 | Bill Whittington (USA)/Klaus Ludwig (D)/Don Whittington (USA) | Porsche Kremer Racing (D) | 1st | 1st | 3rd | 307 laps |
17 June 1979 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 29th | 14th | 2nd | 25 laps |
4 July 1979 - Daytona Paul Revere 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 935 | 930 670 0152 | GTX | Don Whittington (USA)/Bill Whittington (USA) | Whittington Brothers Racing (USA) | 14th | 5th | 2nd | 57 laps - DNF |
7 July 1979 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/77A | 930 890 0023 | Gr.5 | Don Whittington (USA)/Klaus Ludwig (D)/Bill Whittington (USA) | Whittington Bros/Kremer Racing (USA) | 1st | 1st | 2nd | 175 laps |
15 July 1979 - Mid-Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/79 | 930 990 0026 | GTX | Don Whittington (USA)/Bill Whittington (USA) | Whittington Brothers Racing (USA) | 2nd | 2nd | 3rd | 104 laps |
29 July 1979 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 935 | 930 670 0152 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 23rd | 13th | 9th | 28 laps - DNF |
23 September 1979 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 935 | 930 670 0152 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 5th | 5th | 2nd | 39 laps - DNF |
25 November 1979 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 935 K3 | 009 00015 | GTX | Don Whittington (USA) | Whittington Brothers Racing (USA) | 2nd | 2nd | 1st | 47 laps |