| series | Champcar complete |
| team | William Seidelman |
| year | race | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| 1966 | Sacramento | 85 | Seidelman | Bruce Jacobi | | DNS | Watson 55 D [2] | Offy 252 | |||
| 1967 | Sacramento | 85 | Wynn's | John McIntyre | | DNS | Watson 55 D [2] | Offy 252 | |||
| 1967 | Hanford | 8 | Wynn's | John McIntyre | | DNS | Watson 55 D [2] | Offy 252 | |||
| 1969 | Phoenix | 85 | Seidelman | Tommy Copp | | 23 | 18 | Ward 69 D [4] | Offy 252 | ||
| 1969 | Hanford | 85 | Seidelman | Tommy Copp | | DNS | Ward 69 D [4] | Offy 252 | |||
| 1969 | Sacramento | 85 | Jones Engineering | Tommy Copp | | 18 | 18 | Ward 69 D [4] | Offy 252 | ||
| 1969 | Phoenix II | 85 | Jones Engineering | Tommy Copp | | DNS | Ward 69 D [4] | Offy 252 | |||
| 1970 | Springfield | 85 | Seidelman | Sam Sessions | | 23 | 17 | Ward 69 D [4] | Offy 252 | ||
| 1970 | Sacramento | 85 | Seidelman | Gary Ponzini | | DNS | Ward 69 D [4] | Offy 252 |
