| Teams 1975 Delaware 500 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 5 | Sisco Racing | David Sisco | Chevrolet |
| 7 | Dalton Racing | Dean Dalton | Ford |
| 8 | Negre Racing | Ed Negre | Dodge |
| 10 | Champion Racing | Tommy Gale | Ford |
| 10 | Canavan Racing | Earle Canavan | Dodge |
| 11 | Junior Johnson and Associates | Cale Yarborough | Chevrolet |
| 14 | Cunningham-Kelley Racing | Coo Coo Marlin | Chevrolet |
| 15 | Bud Moore Engineering | Buddy Baker | Ford |
| 16 | Team Penske | Bobby Allison | AMC Matador |
| 18 | Frasson Racing | Joe Frasson | Dodge |
| 19 | Henley Gray Racing | Henley Gray | Chevrolet |
| 21 | Wood Brothers Racing | David Pearson | Mercury |
| 23 | Robertson Racing | Earl Brooks | Dodge |
| 24 | Gordon Racing | Cecil Gordon | Chevrolet |
| 25 | Robertson Racing | Jabe Thomas | Chevrolet |
| 29 | Hollar Racing | Bill Hollar | Chevrolet |
| 30 | Ballard Racing | Walter Ballard | Chevrolet |
| 37 | Opal Voight | Bruce Jacobi | Chevrolet |
| 40 | US Racing | D.K. Ulrich | Chevrolet |
| 43 | Petty Enterprises | Richard Petty | Dodge |
| 45 | Newsom Racing | Rick Newsom | Ford |
| 47 | Hill Racing | Bruce Hill | Chevrolet |
| 48 | Hylton Engineering | James Hylton | Chevrolet |
| 54 | Elder-Ranier Racing | Lennie Pond | Chevrolet |
| 61 | Viglione Racing | Joe Mihalic | Chevrolet |
| 63 | Moyer Racing | Terry Bivins | Chevrolet |
| 64 | Langley Racing | Elmo Langley | Ford |
| 67 | Arrington Racing | Buddy Arrington | Plymouth |
| 70 | McDuffie Racing | J.D. McDuffie | Chevrolet |
| 71 | K&K Racing | Dave Marcis | Dodge |
| 72 | DeWitt Racing | Benny Parsons | Chevrolet |
| 74 | Charles Little | Randy Tissot | Chevrolet |
| 79 | Warren Racing | Frank Warren | Dodge |
| 88 | DiGard Racing | Darrell Waltrip | Chevrolet |
| 90 | Donlavey Racing | Dick Brooks | Ford |
| 93 | Donlavey Racing | Dick May | Ford |
| 96 | Garn Racing | Richard Childress | Chevrolet |