PORSCHE RACING HISTORYLudwig Heimrath, Sr (CDN)
1979 : Trans-Am Westwood - 2nd overall : Trans-Am Road America - 2nd overall
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 69 | Porsche 911 Carrera RSR | GTO | Klaus Bytzek (CDN)/Rudy Bartling (CDN)/Ludwig Heimrath, Sr (CDN) | Bytzek Automotive (CDN) | 33rd | 12th | 28th | 335 laps - Oil System |
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | GTX | Ludwig Heimrath, Sr (CDN)/" Jamsal" (ES)/Carlos Moran (ES) | Heimrath Racing (CDN) | 65th | 18th | 8th | 17 laps - DNF |
3 June 1979 - Trans-Am Westwood - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Ludwig Heimrath (CDN) | 2nd | 2nd | 2nd | 55 laps |
17 June 1979 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 77 | Porsche 935 | 930 770 0958 | GTX | Ludwig Heimrath, Sr (CDN) | Ludwig Heimrath (CDN) | 31st | 15th | 9th | 20 laps |
7 July 1979 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | Gr.5 | Ludwig Heimrath, Sr (CDN)/Carlos Moran (ES) | Heimrath Racing (CDN) | 24th | 10th | 11th | 117 laps - Engine |
21 July 1979 - Trans-Am Road America - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Ludwig Heimrath (CDN) | 2nd | 2nd | 3rd | 25 laps |
5 August 1979 - Trans-Am Watkins Glen - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Ludwig Heimrath (CDN) | 5th | 4th | 2nd | 29 laps |
2 September 1979 - Road America 500 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 07 | Porsche 935 | 930 770 0958 | GTX | Ludwig Heimrath, Sr (CDN)/Brett Lunger (USA) | Ludwig Heimrath (CDN) | 38th | 10th | 3rd | 28 laps - DNF |