| Teams 1966 Capital City 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 1 | Paul Lewis | Paul Lewis | Plymouth |
| 2 | Donald Brackens | Bobby Allison | Chevrolet |
| 4 | DeWitt Racing | John Sears | Ford |
| 6 | Owens Racing | David Pearson | Dodge |
| 15 | Lyle Stelter | Paul Dean Holt | Ford |
| 16 | Bud Moore Engineering | Darel Dieringer | Mercury |
| 17 | Toy Bolton | Bob Cooper | Chevrolet |
| 19 | J.T. Putney | J.T. Putney | Chevrolet |
| 20 | Clyde Lynn | Clyde Lynn | Ford |
| 26 | Junior Johnson and Associates | Junior Johnson | Ford |
| 34 | Scott Racing | Wendell Scott | Ford |
| 42 | Petty Enterprises | Richard Petty | Plymouth |
| 47 | Toy Bolton | Curtis Turner | Chevrolet |
| 48 | Bud Hartje | James Hylton | Dodge |
| 58 | Gene Hobby | Gene Hobby | Dodge |
| 63 | Bob Adams | Larry Manning | Plymouth |
| 64 | Elmo Langley & Henry Woodfield | Elmo Langley | Ford |
| 67 | Arrington Racing | Buddy Arrington | Dodge |
| 70 | McDuffie Racing | J.D. McDuffie | Ford |
| 72 | Champion Racing | Bill Champion | Ford |
| 80 | Allen McMillion | G.T. Nolan | Pontiac |
| 83 | Allen McMillion | Worth McMillion | Pontiac |
| 87 | Buck Baker Racing | Buck Baker | Oldsmobile |
| 88 | Buck Baker Racing | Neil Castles | Chevrolet |
| 92 | W.S. Jenkins | Hank Thomas | Ford |
| 95 | Siefert Racing | Bill Seifert | Ford |
| 96 | Homer O'Dell | Jimmy Helms | Ford |
| 97 | Henley Gray Racing | Henley Gray | Ford |