| Teams 1973 Firecracker 400 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 2 | Marcis Auto Racing | Dave Marcis | Dodge |
| 4 | J. Marvin Mills | John Sears | Dodge |
| 5 | McGee Racing | David Sisco | Chevrolet |
| 5 | Faustina Racing | Dick Simon | Dodge |
| 7 | Dalton Racing | Dean Dalton | Mercury |
| 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 |
| 15 | Bud Moore Engineering | Bobby Isaac | Ford |
| 18 | Frasson Racing | Joe Frasson | Dodge |
| 19 | Henley Gray Racing | Henley Gray | Mercury |
| 21 | Wood Brothers Racing | David Pearson | Mercury |
| 23 | Robertson Racing | Jabe Thomas | Dodge |
| 24 | Gordon Racing | Cecil Gordon | Chevrolet |
| 25 | Robertson Racing | Roy Mayne | Dodge |
| 28 | Ellington Racing | Gordon Johncock | Chevrolet |
| 30 | Vic Ballard | Walter Ballard | Mercury |
| 31 | O.L. Nixon Racing | Jim Vandiver | Dodge |
| 42 | Marty Robbins Racing | Marty Robbins | Dodge |
| 43 | Petty Enterprises | Richard Petty | Dodge |
| 45 | Siefert Racing | Vic Parsons | Ford |
| 48 | Hylton Engineering | James Hylton | Mercury |
| 49 | GC Spencer Racing | G.C. Spencer | Dodge |
| 50 | A.J. Foyt Enterprises | A.J. Foyt | Chevrolet |
| 54 | Elder-Ranier Racing | Lennie Pond | Chevrolet |
| 61 | B & B Racing | Ed Sczech | Chevrolet |
| 64 | Langley Racing | Elmo Langley | Ford |
| 67 | Arrington Racing | Buddy Arrington | Plymouth |
| 70 | McDuffie Racing | J.D. McDuffie | Chevrolet |
| 71 | K&K Racing | Buddy Baker | Dodge |
| 72 | DeWitt Racing | Benny Parsons | Chevrolet |
| 79 | Warren Racing | Frank Warren | Dodge |
| 88 | DiGard Racing | Donnie Allison | Chevrolet |
| 90 | Donlavey Racing | Dick Brooks | Ford |
| 92 | Harley Smith | Larry Smith | Mercury |
| 95 | Darrell Waltrip Motorsports | Darrell Waltrip | Mercury |
| 96 | Garn Racing | Richard Childress | Chevrolet |
| 97 | Williams Racing | Raymond Williams | Ford |