PORSCHE RACING HISTORYPorsche 935 K3 - Chassis No. 930 670 0152
10 July 1976 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 36 | Porsche 934 | 930 670 0152 | GT | Paul Miller (USA)/Kenper Miller (USA) | Paul Miller (USA) | 13th | 3rd | 15th | 153 laps |
9 July 1977 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 934 | 930 670 0152 | GT | Elliott Forbes-Robinson (USA)/Mike Tillson (USA) | Mike Tillson Enterprises, Inc. (USA) | 35th | 8th | 17th | 68 laps - Oil Leak |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Don Whittington (USA)/Russ Boy (USA) | Whittington Bros. (USA) | 24th | 6th | 31st | 172 laps |
16 April 1978 - 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 | Bill Whittington (USA) | Whittington Brothers Racing (USA) | 24th | 14th | 13th | 31 laps |
30 April 1978 - 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) | 26th | 14th | 13th | 26 laps - DNF |
7 May 1978 - Hallett 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Bill Whittington (USA) | Whittington Brothers Racing (USA) | 4th | 4th | 7th | 54 laps |
29 May 1978 - 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) | 4th | 4th | 8th | 63 laps |
18 June 1978 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Bill Whittington (USA) | Whittington Brothers Racing (USA) | 5th | 5th | 7th | 32 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 93 | Porsche 934 | 930 670 0152 | GTX | Don Whittington (USA)/Bill Whittington (USA) | Whittington Brothers Racing (USA) | 3rd | 3rd | 11th | 64 laps |
30 July 1978 - Sears Point 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) | 2nd | 2nd | 3rd | 40 laps |
6 August 1978 - Portland 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) | 6th | 6th | 6th | 49 laps |
27 August 1978 - Mid Ohio 250 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) | 10th | 7th | 7th | 97 laps |
4 September 1978 - 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) | 2nd | 2nd | 6th | 40 laps |
26 November 1978 - Daytona Finale 250 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) | 13th | 8th | 12th | 60 laps |
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 |
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 |
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 |
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 |
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 |
1 February 1981 - Daytona 24 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935 K3 | 930 670 0152 | GTX | Don Whittington (USA)/Bill Whittington (USA)/Dale Whittington (USA) | Whittington Brothers Racing (USA) | 57th | 19th | 9th | 84 laps - Engine |
21 March 1981 - Sebring 12 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 94 | Porsche 935 K3 | 930 670 0152 | GTX | Don Whittington (USA)/Bill Whittington (USA)/Dale Whittington (USA) | Whittington Bros (USA) | 65th | 22nd | 9th | 43 laps - Engine |