1988 IndyCar season Drivers and constructors Drivers and constructors

| Team | Chassis | Engine | Tires | Drivers |
|---|---|---|---|---|
| Granatelli Racing | Lola / March | Cosworth / Chevrolet | G | Roberto Guerrero |
| Granatelli Racing | Lola / March | Cosworth / Chevrolet | G | Al Unser |
| Granatelli Racing | Lola / March | Cosworth / Chevrolet | G | Gordon Johncock |
| Machinists Union Racing | March | Cosworth | G | Kevin Cogan |
| Machinists Union Racing | March | Cosworth | G | Scott Pruett |
| Machinists Union Racing | March | Cosworth | G | Scott Atchison |
| Machinists Union Racing | March | Cosworth | G | Rich Vogler |
| Machinists Union Racing | March | Buick | G | Pancho Carter |
| Dick Simon Racing | Lola | Cosworth | G | Arie Luyendyk |
| Dick Simon Racing | Lola | Cosworth | G | Dick Simon |
| Dick Simon Racing | Lola | Cosworth | G | Scott Pruett |
| Dick Simon Racing | Lola | Cosworth | G | Didier Theys |