| series | Champcar complete |
| team | Duncan & Capanna |
| year | race | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| 1958 | Indy 500 | 51 | Duncan | Jerry Unser |  | DNS | Kurtis 500A FE [360-53] | DeSoto Hemi 255 V8 |
1 entry
| series | Champcar complete |
| team | Duncan & Capanna |
| year | race | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| 1958 | Indy 500 | 51 | Duncan | Jerry Unser | | DNS | Kurtis 500A FE [360-53] | DeSoto Hemi 255 V8 |