| series | Champcar complete |
| team | Ron Hart |
| year | race | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| 1970 | Springfield | 48 | Ron Hart | Karl Busson |  | 19 | 23 | Cedoz 70 D [1] | Chevy 305 V8 | ||
| 1970 | DuQuoin | 48 | Ron Hart | Karl Busson | | DNS | Cedoz 70 D [1] | Chevy 305 V8 | |||
| 1970 | Indy Hoosier | 48 | Ron Hart | Karl Busson | | DNS | Cedoz 70 D [1] | Chevy 305 V8 | |||
| 1970 | Sedalia | 48 | Ron Hart | Karl Busson | | DNS | Cedoz 70 D [1] | Chevy 305 V8 |
4 entries
