PORSCHE RACING HISTORYDale Whittington (USA)
1980 : Sebring 12 Hours - 3rd overall : Road Atlanta 50 Miles - Heat 1 - 2nd overall
3 February 1980 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 935 K3 | 009 00015 | GTX | Bill Whittington (USA)/Don Whittington (USA)/Dale Whittington (USA) | Whittington Bros. (USA) | 16th | 8th | 1st | 509 laps - DSQ Assistance |
3 February 1980 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/79 | 930 990 0028 | GTX | Dale Whittington (USA)/Axel Plankenhorn (D) | Whittington Bros. (USA) | 51st | 18th | 5th | 179 laps - Engine |
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 935 K3 | 009 00015 | GTX | Don Whittington (USA)/Bill Whittington (USA)/Dale Whittington (USA) | Whittington Bros. (USA) | 3rd | 3rd | 3rd | 247 laps |
13 April 1980 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935 | 930 670 0152 | GTX | Dale Whittington (USA) | Whittington Bros. Racing (USA) | 4th | 4th | 10th | 19 laps |
27 April 1980 - Riverside 5 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935/79 | 930 990 0028 | GTX | Dale Whittington (USA)/Michael Chandler (USA) | Whittington Brothers Racing (USA) | 4th | 4th | 13th | 160 laps |
15 June 1980 - Le Mans 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 85 | Porsche 935 K3 | 009 00015 | Gr.5 | Don Whittington (USA)/Hurley Haywood (USA)/Dale Whittington (USA) | Whittington Bros. (USA) | DNF | 21st | 151 laps - Differential |
5 July 1980 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 85 | Porsche 935 K3 | 009 00015 | Gr.5 | Don Whittington (USA)/Hurley Haywood (USA)/Dale Whittington (USA) | Whittington Brothers Racing (USA) | 9th | 9th | 8th | 130 laps |
5 July 1980 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 28 | Porsche 935 | 930 770 0960 | Gr.5 | Marty Hinze (USA)/Dale Whittington (USA) | Marty Hinze (USA) | 34th | 22nd | 18 laps - Gearbox |
17 August 1980 - Mosport 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 9 | Porsche 935 K3 | 930 890 0021 | GTX | Dale Whittington (USA)/Preston Henn (USA) | Thunderbird Racing (USA) | 9th | 8th | 12th | 219 laps - Spin |
31 August 1980 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 09 | Porsche 935 K3 | 930 890 0021 | GTX | Dale Whittington (USA)/Preston Henn (USA) | Preston Henn (USA) | 4th | 4th | 6th | 121 laps |
21 September 1980 - Road Atlanta 50 Miles - Heat 1 - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 95 | Porsche 935 K3 | 930 890 0023 | GTX | Dale Whittington (USA) | Whittington Brothers Racing (USA) | 2nd | 2nd | 6th | 20 laps |
21 September 1980 - Road Atlanta 50 Miles - Heat 2 - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 95 | Porsche 935 K3 | 930 890 0023 | GTX | Dale Whittington (USA) | Whittington Brothers Racing (USA) | 4th | 4th | 6th | 13 laps |
30 November 1980 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 95 | Porsche 935 K3 | 930 890 0023 | GTX | Dale Whittington (USA) | Whittington Brothers Racing (USA) | 35th | 9th | 2nd | 44 laps - DNF |