PORSCHE RACING HISTORY1983 - Mosport 6 Hours
14 August 1983 - Mosport Park, Canada
Highest placed Porsche was a Porsche 914/6 driven by Tim Selby and Earl Roe, which was 8th overall and 3rd in GTU class
GTU - 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 23 | Porsche 914/6 | 914 043 0538 | GTU | Tim Selby (USA)/Earl Roe (USA) | Roe/Selby Racing (USA) | 8th | 3rd | 23rd | 200 laps |
| 24 | Porsche 935 JLP-2 | 009 00043 | GTP | M. L. Speer (USA)/Wayne Pickering (USA)/Ken Madren (USA) | Pegasus III Racing (USA) | 9th | 4th | 6th | 199 laps |
| 6 | Porsche 935 K3 | 000 0009 | GTP | John Graham (CDN)/Hurley Haywood (USA)/Eddie Wachs (USA) | Henn's T-Bird Swap Shop (USA) | 10th | 5th | 10th | 196 laps - DNF |
| 5 | Porsche 935 K3/80 | 000 00013 | GTP | Bob Akin (USA)/John O'Steen (USA)/Dennis Aase (USA) | Bob Akin Motor Racing (USA) | 12th | 6th | 5th | 191 laps |
| 35 | Porsche 911 Carrera | GTO | Bobby Hefner (USA)/Jack Griffin (USA)/Wayne Baker (USA) | Pegasus III Racing (USA) | 14th | 4th | 22nd | 179 laps | |
| 07 | Porsche 934 | 930 770 0958 | GTO | Ludwig Heimrath, Sr (CDN)/Ludwig Heimrath, Jr (CDN) | Heimrath Racing (CDN) | 16th | 5th | 8th | 161 laps |
| 77 | Porsche 914/6 | 914 043 0754 | GTU | Paul Resnick (USA)/Ron Barnaba (USA)/Steve Zwiren (USA) | Porsche Auto Recyclers | 17th | 6th | 27th | 157 laps |
| 34 | Porsche 924 Carrera GTR | GTU | George Drolsom (USA)/John Jones (CDN) | Drolsom Racing (USA) | 19th | 7th | 21st | 110 laps - DNF | |
| 83 | Porsche 911 | GTU | Fritz Hochreuter (CDN)/Rainer Brezinka (CDN) | R & H Racing (CDN) | 21st | 8th | 20th | 109 laps | |
| 96 | Porsche 911 Carrera RSR | GTO | Phil Byrd (USA)/Richard Silver (USA) | Weld Fixturing (USA) | 23rd | 9th | 28th | 100 - DNF | |
| 94 | Porsche 914/6 | 914 043 1523 | GTU | Bruce Jones (USA)/Fred Apgar (USA) | Bruce Jones | 24th | 9th | 25th | 66 laps - DNF |
| 79 | Porsche 924 Carrera GTR | WP0ZZZ93ZBS720006 | GTU | Bob Bergstrom (USA) | 25th | 10th | 14th | 63 laps - DNF | |
| 91 | Porsche 934 | 930 890 0014 | GTO | Chester Vincentz (USA) | Electrodyne (USA) | 29th | 11th | 29th | 3 laps - DNF |
IMSA - International Motor Sport Association
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