PORSCHE RACING HISTORYDale Whittington (USA)
1979
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0173 | GTO | Dale Whittington (USA)/R. D. Whittington (USA)/Preston Henn (USA) | Whittington Bros. Racing (USA) | 29th | 11th | 35th | 389 laps - Accident |
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 92 | Porsche 934 | 930 670 0173 | GTO | Dale Whittington (USA)/R. D. Whittington (USA)/Milt Minter (USA) | Whittington Bros. Racing (USA) | 44th | 16th | 13th | 94 laps - Suspension |
23 September 1979 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 95 | Porsche 935/77A | 930 890 0023 | GTX | Dale Whittington (USA) | Whittington Brothers Racing (USA) | 9th | 9th | 33rd | 38 laps |
25 November 1979 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 95 | Porsche 935/77A | 930 890 0023 | GTX | Dale Whittington (USA) | Whittington Brothers Racing (USA) | 55th | 11th | 9th | 14 laps - DNF |