| Teams 1971 Firecracker 400 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 0 | George Althied | George Altheide | Dodge |
| 2 | Marcis Auto Racing | Dave Marcis | Dodge |
| 3 | Howard & Egerton Racing | Charlie Glotzbach | Chevrolet |
| 4 | John Sears | John Sears | Dodge |
| 6 | Owens Racing | Pete Hamilton | Plymouth |
| 6 | Castle Racing | Neil Castles | Dodge |
| 7 | Dalton Racing | Dean Dalton | Ford |
| 7 | Cunningham-Kelley Racing | Coo Coo Marlin | Chevrolet |
| 11 | Petty Enterprises | Buddy Baker | Dodge |
| 12 | Holman-Moody Racing | Bobby Allison | Mercury |
| 15 | Pistone Racing | Don Tarr | Ford |
| 17 | Nichels Engineering | David Pearson | Plymouth |
| 18 | Frasson Racing | Joe Frasson | Dodge |
| 21 | Wood Brothers Racing | Donnie Allison | Mercury |
| 24 | Gordon Racing | Cecil Gordon | Mercury |
| 25 | Robertson Racing | Jabe Thomas | Plymouth |
| 30 | Vic Ballard | Walter Ballard | Ford |
| 39 | Friday Hassler | Friday Hassler | Chevrolet |
| 43 | Petty Enterprises | Richard Petty | Plymouth |
| 45 | Siefert Racing | Bill Seifert | Ford |
| 46 | Tom Hunter | Roy Mayne | Chevrolet |
| 47 | Williams Racing | Raymond Williams | Ford |
| 48 | Hylton Engineering | James Hylton | Ford |
| 52 | Holman-Moody Racing | A.J. Foyt | Mercury |
| 53 | Hopper-Crews Racing | Bobby Brack | Ford |
| 55 | Lund Racing | Tiny Lund | Mercury |
| 60 | Nagle Racers | Maynard Troyer | Mercury |
| 64 | Langley Racing | Elmo Langley | Mercury |
| 68 | Allan Schlauer | Larry Baumel | Ford |
| 70 | McDuffie Racing | J.D. McDuffie | Mercury |
| 71 | K&K Racing | Bobby Isaac | Dodge |
| 76 | Ben Arnold | Ben Arnold | Ford |
| 77 | Roberts Racing | Charlie Roberts | Ford |
| 79 | Warren Racing | Frank Warren | Dodge |
| 86 | Castle Racing | Bill Champion | Dodge |
| 88 | Lubinski Racing | Ron Keselowski | Dodge |
| 90 | Donlavey Racing | Bill Dennis | Mercury |
| 91 | Junior Fields | Ed Negre | Chevrolet |
| 92 | Harley Smith | Larry Smith | Ford |
| 99 | Nichels Engineering | Fred Lorenzen | Plymouth |