1991 CART Series Engines Championship Standings
| # | Engine | Points | |
|---|---|---|---|
| 1. |  Chevrolet |
374 |
|
| 2. |  Judd |
93 |
|
| 3. |  Cosworth |
57 |
|
| 4. |  Alfa Romeo |
56 |
|
| 5. |  Buick |
15 |
|
Next race: XPEL Grand Prix at Road America, June 21, 02:27 pm ET