PORSCHE RACING HISTORY1973 - Sebring 12 Hours
24 March 1973 - Sebring International Raceway, USA
Peter Gregg, Hurley Haywood and Dave Helmick win in Porsche 911 Carrera RSR
Overall - 1st, 2nd : GTO Class - 1st, 2nd : GTU Class - 1st, 2nd, 3rd
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 59 | Porsche 911 Carrera RSR | 911 360 0705 | GTO | Peter Gregg (USA)/Hurley Haywood (USA)/Dave Helmick (USA) | Dr. Dave Helmick (USA) | 1st | 1st | 4th | 226 laps |
| 1 | Porsche 911 Carrera RSR | 911 360 0755 | GTO | Michael Keyser (USA)/Milt Minter (USA) | Toad Hall Motor Racing (USA) | 2nd | 2nd | 5th | 225 laps |
| 81 | Porsche 911 Carrera RSR | 911 360 0756 | GTO | Grey Egerton (USA)/Elliott Forbes-Robinson (USA) | Far West Racing (USA) | 4th | 4th | 7th | 217 laps |
| 27 | Porsche 911 S | GTU | Don Lindley (USA)/Stephen Behr (USA)/Brian Goellnicht (USA) | Don Lindley | 7th | 1st | 44th | 209 laps | |
| 76 | Porsche 911 S | 911 230 1687 | GTU | George Stone (USA)/Mike Downs (USA) | Silverstone Racing Team (USA) | 8th | 2nd | 23rd | 209 laps |
| 91 | Porsche 911 S | GTU | John Bently (USA)/Mike Tillson (USA)/Harry Bytzek (CDN) | Holbert's Porsche-Audi (USA) | 10th | 3rd | 43rd | 198 laps | |
| 77 | Porsche 911 S | GTU | Bruce Jennings (USA)/Bob Beasley (USA) | Bruce Jennings (USA) | 13th | 4th | 36th | 193 laps | |
| 89 | Porsche 911 S | GTU | Don Parish (USA)/Dave Causey (USA)/Edwin Taylor (USA) | Thomas Barrick (USA) | 14th | 5th | 57th | 193 laps | |
| 82 | Porsche 911 S | 119 220 830 | GTU | Bob Bergstrom (USA)/Jim Cook (USA) | Bob Bergstrom (USA) | 15th | 6th | 19th | 191 laps |
| 84 | Porsche 911 S | GTU | Klaus Selbert (USA)/Sieg Glage (USA) | Airport Motorsports | 18th | 7th | 56th | 186 laps | |
| 67 | Porsche 914/6 | 914 043 1262 | GTU | David McClain (USA)/Dave White (USA) | David H. McClain (USA) | 23rd | 8th | 40th | 177 laps |
| 92 | Porsche 911 S | GTU | Dieter Oest (USA)/Don Heth (USA)/David Olimpi (USA) | Holbert's Porsche-Audi (USA) | 25th | 9th | 70th | 174 laps | |
| 85 | Porsche 914/6 | GTU | Don Parish (USA)/Ron Jones (USA)/John Hulen (USA) | Donald Parish (USA) | 30th | 10th | 54th | 154 laps | |
| 86 | Porsche 911 ST | 911 012 1866 | GTU | Jim Lynch (USA)/Toby Milne (USA) | James Lynch (USA) | 35th | 12th | 25th | 148 laps |
| 95 | Porsche 911 | GTU | George Dickinson (USA)/Eddie Wachs (USA)/Ernest Pultz (USA) | G. W. Dickinson | 41st | 13th | 24th | 125 laps - DNF | |
| 46 | Porsche 911 S | GTU | Klaus Bytzek (CDN)/Rudy Bartling (CDN) | Bytzek Automotive (CDN) | 55th | 16th | 33rd | 80 laps - DNF | |
| 70 | Porsche 911 ST | 911 230 1222 | GTU | Marc Dancose (CDN) | Marc Dancose (CDN) | 65th | 17th | 29th | 30 laps - DNF |
| 75 | Porsche 911 S | GTU | Tom Kuenz (USA)/Tom Shelton (USA) | Tom Kuenz | 66th | 18th | 63rd | 23 laps - DNF | |
| 4 | Porsche 911 S | GTU | Bob Lillquist (USA) | Western Sizzlin' Steak Houses | 68th | 19th | 49th | 19 laps - DNF |
Non Championship Race Sebring 12 Hours
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