| Teams 1973 Delaware 500 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 0 | Bobby Mausgrover | Bobby Mausgrover | Chevrolet |
| 1 | Canavan Racing | Earle Canavan | Plymouth |
| 4 | J. Marvin Mills | John Sears | Dodge |
| 5 | McGee Racing | David Sisco | Chevrolet |
| 8 | Negre Racing | Ed Negre | Dodge |
| 10 | Champion Racing | Bill Champion | Mercury |
| 11 | Howard & Egerton Racing | Cale Yarborough | Chevrolet |
| 12 | Bobby Allison Motorsports | Bobby Allison | Chevrolet |
| 14 | Cunningham-Kelley Racing | Coo Coo Marlin | Chevrolet |
| 19 | Henley Gray Racing | Henley Gray | Mercury |
| 20 | Newsom Racing | Rick Newsom | Ford |
| 21 | Wood Brothers Racing | David Pearson | Mercury |
| 22 | Crawford Brothers | Jimmy Crawford | Plymouth |
| 24 | Gordon Racing | Cecil Gordon | Chevrolet |
| 25 | Robertson Racing | Jabe Thomas | Dodge |
| 26 | Brooks Racing | Earl Brooks | Ford |
| 29 | Hollar Racing | Dean Dalton | Mercury |
| 30 | Vic Ballard | Walter Ballard | Mercury |
| 40 | US Racing | D.K. Ulrich | Ford |
| 43 | Petty Enterprises | Richard Petty | Dodge |
| 47 | Williams Racing | Raymond Williams | Ford |
| 48 | Hylton Engineering | James Hylton | Chevrolet |
| 49 | GC Spencer Racing | G.C. Spencer | Dodge |
| 51 | Strong Racing | Vic Parsons | Chevrolet |
| 54 | Elder-Ranier Racing | Lennie Pond | Chevrolet |
| 64 | Langley Racing | Elmo Langley | Ford |
| 67 | Arrington Racing | Buddy Arrington | Dodge |
| 70 | McDuffie Racing | J.D. McDuffie | Chevrolet |
| 71 | K&K Racing | Buddy Baker | Dodge |
| 72 | DeWitt Racing | Benny Parsons | Chevrolet |
| 73 | Robertson Racing | Mel Larson | Dodge |
| 77 | Roberts Racing | Charlie Roberts | Chevrolet |
| 79 | Warren Racing | Frank Warren | Dodge |
| 83 | Norris Reed | Toby Tobias | Mercury |
| 88 | DiGard Racing | Donnie Allison | Chevrolet |
| 89 | Hopper-Crews Racing | Johnny Barnes | Mercury |
| 90 | Donlavey Racing | Eddie Pettyjohn | Mercury |
| 95 | Darrell Waltrip Motorsports | Darrell Waltrip | Chevrolet |
| 96 | Garn Racing | Richard Childress | Chevrolet |
| 99 | K-Automotive Performance | Ron Keselowski | Dodge |