| Teams for 1966 Beltsville 200 |
|---|
| Car | Team | Driver | Mfg |
|---|---|---|---|
| 4 | DeWitt Racing | John Sears |  |
| 6 | Owens Racing | David Pearson |  |
| 34 | Scott Racing | Wendell Scott | |
| 43 | Petty Enterprises | Richard Petty |  |
| 59 | Pistone Racing | Tom Pistone | |
| 70 | McDuffie Racing | J.D. McDuffie | |
| 72 | Champion Racing | Bill Champion | |
| 86 | Buck Baker Racing | Neil Castles | |
| 87 | Buck Baker Racing | Buck Baker |  |
| 90 | Donlavey Racing | Sonny Hutchins | |
| 97 | Henley Gray Racing | G.C. Spencer | |
