| 16.6.1973 | Trans-Am Watkins Glen | 10 | Corvette C3 | Tony DeLorenzo | Troy Promotions, Inc. | DNA |
| 16.6.1973 | Trans-Am Watkins Glen | 13 | Camaro II | Warren Agor | Warren Agor Racing Enterprises, Inc. | 32nd |
| 16.6.1973 | Trans-Am Watkins Glen | 15 | Camaro | Steve Ross | Steve Ross | 12th |
| 16.6.1973 | Trans-Am Watkins Glen | 56 | Camaro I | Shook / Stoddart | Shook-Bruehler Racing | DNS |
| 16.6.1973 | Trans-Am Watkins Glen | 94 | Corvette | Pickett / Bean | Leldon Blackwell Racing | DNA |
| 16.6.1973 | Trans-Am Watkins Glen | 98 | Camaro | William Weick | William Weick | 29th |
| 17.6.1973 | Anderstorp [T/GT] | 9 | Camaro | Rolf Skoghag | Team Pierre Robert | DNA |
| 17.6.1973 | Anderstorp [T/GT] | 14 | Camaro Z28 | Lennart Johansson | Team Årsta Lelle | 7th |
| 17.6.1973 | Anderstorp [T/GT] | 21 | Camaro | Per Alm | STP Speedman | DNA |
| 17.6.1973 | Hockenheim [GT] | | Corvette Sting Ray C2 | Walter Stierli | | DNF |
| 24.6.1973 | SCCA Regional Virginia [ASR+BSR+AP+BP+CP+DP+AS+BS] | 11 | Corvette | Harvey Park | | DNF |
| 1.7.1973 | DRM Mainz-Finthen | | Camaro | Urs Zondler | | DNF |
| 1.7.1973 | DRM Mainz-Finthen | | Camaro | Peter Hoffmann | Steinmetz Automobiltechnik | DNF |
| 4.7.1973 | 250 mile Daytona Paul Revere | 2 | Corvette | Sanford Smith | | 38th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 5 | Corvette | Dave Heinz | Race Enterprise & Developments | 34th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 7 | Camaro | Eddie Johnson | Eddie Johnson | 25th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 8 | Camaro II | Tom Nehl | | 29th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 11 | Camaro I | Paul Hecker | Paul Hecker | 13th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 14 | Camaro I | C. C. Canada | C. C. Canada | 30th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 15 | Camaro II | Febles / Garcia | | 9th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 16 | Corvette | McVey / Hollowell | | 27th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 17 | Camaro II | Vince Gimondo | Vince Gimondo | 8th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 20 | Nova | Wayne Alexander | | 32nd |
| 4.7.1973 | 250 mile Daytona Paul Revere | 24 | Camaro | Bobby Allison | | 23rd |
| 4.7.1973 | 250 mile Daytona Paul Revere | 26 | Camaro | Ralph Noseda | Ralph M. Noseda | 24th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 38 | Corvette | Terry Wolters | | 39th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 39 | Camaro | Ray Kessler | Ray Kessler Inc. | 10th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 41 | Corvette | George Garcia | George Garcia Racing | 26th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 48 | Corvette | John Greenwood | John Greenwood Racing | 12th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 51 | Corvette | Herb Kanady | | 28th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 66 | Corvette | Creed Smith | | 40th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 71 | Camaro | Bob Christiansen | Robert Christiansen | 14th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 72 | Camaro | Andy Moore | | 43rd |
| 4.7.1973 | 250 mile Daytona Paul Revere | 88 | Camaro II | Maurice Carter | Carter Racing Services | 3rd |
| 4.7.1973 | 250 mile Daytona Paul Revere | 94 | Corvette | Pickett / Bean | Leldon Blackwell Racing | 5th |
| 4.7.1973 | 250 mile Daytona Paul Revere | 96 | Camaro | Gene Felton | Gene Felton | 1st |
| 4.7.1973 | 250 mile Daytona Paul Revere | 97 | Corvette | Tony Ansley | Ansley Racing Enterprises | 31st |
| 4.7.1973 | 250 mile Daytona Paul Revere | 99 | Corvette | Phil Currin | Phil Currin | 15th |
| 8.7.1973 | 6 h Nürburgring | 23 | Camaro | Michael Mario Barretta | Michael Barretta | DNA |
| 15.7.1973 | 6 h Mid-Ohio | 0 | Corvette | | | DNS |
| 15.7.1973 | Trans-Am Sanair | 0 | Camaro | Paul Nichter | Warren Agor Racing Enterprises, Inc. | 2nd |
| 15.7.1973 | Trans-Am Sanair | 1 | Corvette C3 | Robbins / Thompson | Robbins/VanArnen Racing | 3rd |
| 15.7.1973 | 6 h Mid-Ohio | 2 | Camaro II | John Elliott | | 40th |
| 15.7.1973 | 6 h Mid-Ohio | 7 | Camaro | Young / Johnson | Eddie Johnson | 17th |
| 15.7.1973 | 6 h Mid-Ohio | 11 | Corvette | Kiefer / Gwisdalla | | 21st |
| 15.7.1973 | Trans-Am Sanair | 11 | Camaro I | Paul Hecker | Paul Hecker | 10th |
| 15.7.1973 | Trans-Am Sanair | 13 | Camaro II | Warren Agor | Warren Agor Racing Enterprises, Inc. | 1st |
| 15.7.1973 | 6 h Mid-Ohio | 13 | Camaro | Wiese / Jenkins / Walsh | | 16th |
| 15.7.1973 | 6 h Mid-Ohio | 20 | Corvette | Alex Davidson | Alex Davidson | 27th |
| 15.7.1973 | 6 h Mid-Ohio | 23 | Corvette | Allan Anderson | Allan Anderson | 47th |
| 15.7.1973 | Trans-Am Sanair | 23 | Camaro | Duane Winkel | W & W Racing Enterprises | 11th |
| 15.7.1973 | Sweden Falkenberg | 24 | Camaro | Rolf Skoghag | Team Pierre Robert | DNA |
| 15.7.1973 | 6 h Mid-Ohio | 27 | Corvette | Sundman / Mummery | | 14th |
| 15.7.1973 | 6 h Mid-Ohio | 28 | Camaro | Jim Corwin | | 48th |
| 15.7.1973 | Sweden Falkenberg | 29 | Camaro | Per Alm | | DNA |
| 15.7.1973 | 6 h Mid-Ohio | 31 | Camaro II | Bock / Drover | | 20th |
| 15.7.1973 | 6 h Mid-Ohio | 34 | Corvette | Mancuso / Cargill | | 28th |
| 15.7.1973 | 6 h Mid-Ohio | 39 | Camaro | Ray Kessler | Ray Kessler Inc. | 44th |
| 15.7.1973 | 6 h Mid-Ohio | 40 | Corvette | Joe Pirrotta | | 53rd |
| 15.7.1973 | 6 h Mid-Ohio | 41 | Corvette | Ortman / Moyer | | 18th |
| 15.7.1973 | 6 h Mid-Ohio | 44 | Camaro II Z28 | Joe Amato | | 52nd |
| 15.7.1973 | Trans-Am Sanair | 46 | Corvette C3 | Dick Bauer | Performance Associates | 27th |
| 15.7.1973 | 6 h Mid-Ohio | 48 | Corvette | John Greenwood | John Greenwood Racing | 24th |
| 15.7.1973 | 6 h Mid-Ohio | 50 | Corvette C3 | Yenko / Greendyke | John Greenwood Racing | 9th |
| 15.7.1973 | 6 h Mid-Ohio | 54 | Corvette C3 | Bob Nagel | | 30th |
| 15.7.1973 | Trans-Am Sanair | 58 | Corvette C3 | Ron Weaver | Ronald Weaver | 25th |
| 15.7.1973 | 6 h Mid-Ohio | 66 | Corvette C3 | Knupp / Barker | Murray Racing Team | 2nd |
| 15.7.1973 | 6 h Mid-Ohio | 72 | Corvette C3 | Ed Lowther | | 23rd |
| 15.7.1973 | 6 h Mid-Ohio | 73 | Corvette C2 | Findlay / Howey | | 22nd |
| 15.7.1973 | 6 h Mid-Ohio | 83 | Corvette C3 | Farrell / D'Amico | ALTO Racing? | 15th |
| 15.7.1973 | Trans-Am Sanair | 85 | Camaro | Carl Shafer | Don Winters Racing | 21st |
| 15.7.1973 | Trans-Am Sanair | 88 | Camaro II | Carter / Brown | Carter Racing Services | 17th |
| 15.7.1973 | 6 h Mid-Ohio | 93 | Corvette | Larry Ross | | 43rd |
| 15.7.1973 | 6 h Mid-Ohio | 94 | Corvette C3 | Pickett / Bean | Leldon Blackwell Racing | 5th |
| 15.7.1973 | 6 h Mid-Ohio | 96 | Camaro | Gene Felton | Gene Felton | 37th |
| 15.7.1973 | Trans-Am Sanair | 96 | Camaro | Bob Bienerth | Bob Bienerth | 9th |
| 15.7.1973 | Trans-Am Sanair | 98 | Camaro | William Weick | William Weick | 28th |
| 15.7.1973 | 6 h Mid-Ohio | 99 | Corvette | Phil Currin | Phil Currin | 42nd |
| 15.7.1973 | DARM Hockenheim [GT+1.6] | | Corvette Sting Ray C2 | Walter Stierli | | 1st |
| 15.7.1973 | DARM Hockenheim [T+2.0/GT1.6] | | Camaro | Oskar Pfeiffer | Oskar Pfeiffer | ?th |
| 15.7.1973 | DARM Hockenheim [T+2.0/GT1.6] | | Camaro | Urs Zondler | | 1st |
| 15.7.1973 | Trans-Am Sanair | | Camaro | Steve Ross | Steve Ross | 8th |
| 15.7.1973 | DARM Hockenheim [T+2.0/GT1.6] | | Camaro | Peter Hoffmann | Steinmetz-Automobiltechnik | ?th |
| 15.7.1973 | Trans-Am Sanair | | Camaro | Larry Mattera | Larry Mattera | 22nd |
| 15.7.1973 | Trans-Am Sanair | | Camaro | Bill Besarick | Bill Besarick | 12th |
| 21.7.1973 | 6 h Watkins Glen | 0 | Camaro | Agor / Nichter | Warren Agor Racing Enterprises, Inc. | DNF |
| 21.7.1973 | 6 h Watkins Glen | 4 | Camaro I | Canada / Christiansen | C. C. Canada Lumber Co., Inc. | DNA |
| 21.7.1973 | 6 h Watkins Glen | 26 | Corvette | Kepler / Sharp | Fred Kepler Enterprises | DNF |
| 21.7.1973 | 6 h Watkins Glen | 36 | Camaro | Miller / Miller | Miller Brothers Racing Enterprises | DNF |
| 21.7.1973 | 6 h Watkins Glen | 37 | Corvette | Miller / Miller | Miller Brothers Racing Enterprises | DNQ |
| 21.7.1973 | 6 h Watkins Glen | 41 | Corvette | Harris / Choiniere | Rodney Harris | DNF |
| 21.7.1973 | 6 h Watkins Glen | 47 | Corvette | Bauer / DeStefano | Performance Associates | DNA |
| 21.7.1973 | 6 h Watkins Glen | 48 | Corvette | Greenwood / Rutherford | John Greenwood Racing | 9th |
| 21.7.1973 | 6 h Watkins Glen | 63 | Corvette C3 | Oleyar | Michael Oleyar | DNQ |
| 21.7.1973 | 6 h Watkins Glen | 64 | Corvette C3 | Baechle / Stahlberg | Weaver Chevrolet | NC |
| 21.7.1973 | 6 h Watkins Glen | 69 | Corvette | Goldleaf / Drager | Goldleaf Racing, Inc. | DNA |
| 21.7.1973 | 6 h Watkins Glen | 88 | Camaro II | Carter / DeLorenzo | Carter Racing Services | 10th |
| 21.7.1973 | 6 h Watkins Glen | 94 | Corvette C3 | Pickett / Bean | Leidon Blackwell Racing | DNF |
| 22.7.1973 | 24 h Spa | 23 | Camaro Z28 | Hunt / Lloyd | A.G. Rivers Racing Ltd. | DNF |
| 22.7.1973 | SM Hockenheim [GT1.6/Gr.3/S1.0] | 228 | Corvette Sting Ray C2 | Charly Guenin | Ecurie Biennoise | 10th |