PORSCHE RACING HISTORYLudwig Heimrath, Sr (CDN)
1978 : Trans-Am Westwood - 1st overall : Trans-Am Portland - 2nd overall : Trans-Am Mont-Tremblant - 2nd overall : Trans-Am Mosport - 2nd overall : Trans-Am Laguna Seca - 3rd overall : Trans-Am Mexico - 1st overall
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | GTX | Ludwig Heimrath, Sr (CDN)/Jacques Bienvenue (CDN)/Norm Ridgely (CDN) | Heimrath Racing (CDN) | 35th | 13th | 11th | 466 laps - Accident |
18 March 1978 - 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)/Norm Ridgely (CDN) | Heimrath Racing (CDN) | 73rd | 22nd | 71st | 6 laps - Engine |
4 June 1978 - 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) | Heimrath Racing (CDN) | 1st | 1st | 2nd | 56 laps |
11 June 1978 - Trans-Am Portland - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 2nd | 2nd | 5th | 49 laps |
25 June 1978 - Trans-Am Mont-Tremblant - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 2nd | 2nd | 3rd | 38 laps |
8 July 1978 - 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)/Paul Miller (USA) | Heimrath Racing (CDN) | 15th | 8th | 12th | 119 laps |
19 August 1978 - Trans-Am Mosport - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Heimrath Racing Services (CDN) | 2nd | 2nd | 1st | 40 laps |
8 October 1978 - Trans-Am Laguna Seca - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 3rd | 3rd | 5th | 51 laps |
5 November 1978 - Trans-Am Mexico - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | TA-II | Ludwig Heimrath, Sr (CDN) | Heimrath Racing (CDN) | 1st | 1st | 3rd | 31 laps |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 7 | Porsche 935 | 930 770 0958 | GTX | Ludwig Heimrath, Sr (CDN)/Carlos Moran (ES) | Heimrath Racing (CDN) | 5th | 5th | 4th | 63 laps |