PORSCHE RACING HISTORY1978 - Trans-Am Westwood
4 June 1978 - Westwood Motorsport Park, Canada
Ludwig Heimrath, Sr wins in a Porsche 935
Overall - 1st, 2nd : TA-II - 1st, 2nd
| 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 |
| 13 | Porsche 935 | 930 670 0180 | TA-II | Hal Shaw, Jr. (USA) | Hal Shaw Racing (USA) | 2nd | 2nd | 4th | 55 laps |
| 85 | Porsche 934/5 | 930 770 0952 | TA-II | Bruce Leven (USA) | Bayside Racing (USA) | 7th | 4th | 15th | 53 laps |
| 26 | Porsche 911 S | TA-II | Tom Masterson (USA) | Swag Engineering (USA) | 14th | 5th | 24th | 48 laps | |
| 24 | Porsche 911 Carrera RSR | 911 460 9056 | TA-II | Tom Frank (USA) | Executive Industries (USA) | 20th | 7th | 7th | 19 laps - Clutch |
| 23 | Porsche 914/6 | 473 29 24107 | TA-I | Bob Zulkowski (USA) | Metal Craft Racing (USA) | 21st | 14th | 19th | 19 laps - CV Joint |
| 02 | Porsche 914/6 | 914 143 0332 | TA-I | Bruce Sanders (USA) | Bruce Sanders | DNS | |||
| 57 | Porsche 935 | 930 770 0951 | TA-II | Monte Shelton (USA) | Monte's Motors (USA) | DNS |
Trans-Am
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