Pat O'Connor Formula One results at Indianapolis
| Year | Race # | Start | Finish | Car # | Team | Chassis | Engine | Tyre | Owner | Qualifying Time | Laps | X Led | Laps Led | Status | Points |
| 1954 | 2 | 12 | 21 | 35 | Hopkins | KK500C | Offenhauser 4.5 L4 | Firestone | Hopkins | 4:20.71 | 181 | 0 | 0 | spun off | 0 |
| 1955 | 3 | 19 | 8 | 29 | Ansted Rotary | KK500D | Offenhauser 4.5 L4 | Firestone | Ansted | 4:18.63 | 200 | 0 | 0 | +401.60 | 0 |
| 1956 | 3 | 3 | 18 | 7 | Ansted Rotary | KK500D | Offenhauser 4.5 L4 | Firestone | Ansted | 4:08.31 | 187 | 4 | 39 | +13 laps | 0 |
| 1957 | 3 | 1 | 8 | 12 | Sumar | KK500G | Offenhauser 4.5 L4 | Firestone | Root | 4:10.09 | 200 | 2 | 7 | +333.15 | 0 |
| 1958 | 4 | 5 | 29 | 4 | Sumar | KK500G | Offenhauser 4.5 L4 | Firestone | Root | 4:08.58 | 0 | 0 | 0 | fatal accident | 0 |
