Howdy Holmes CART/Champ Car results at Road America
| Year | Race # | Start | Finish | Car # | Sponsor | Chassis | Engine | Tire | Owner | Qualifying Speed | Laps | X Led | Laps Led | Status | Points |
| 1982 | 9 | 6 | 10 | 30 | Domino's Pizza | March | Cosworth | Goodyear | Shierson | 118.079 | 41 | 0 | 0 | gearbox | 6 |
| 1983 | 6 | 10 | 16 | 30 | Domino's Pizza | March | Cosworth | Goodyear | Shierson | 117.435 | 36 | 0 | 0 | accident | 0 |
| 1984 | 9 | 17 | 14 | 41 | Jiffy Mixes | March | Cosworth | Goodyear | Mayer | 117.706 | 47 | 0 | 0 | flagged | 0 |
| 1985 | 8 | 15 | 10 | 33 | Jiffy Mixes | Lola | Cosworth | Goodyear | Forsythe | 121.791 | 48 | 0 | 0 | flagged | 3 |
| 1988 | 12 | 19 | 11 | 21 | Jiffy Mix | March | Cosworth | Goodyear | Morales | 120.299 | 47 | 0 | 0 | flagged | 2 |
