| series | Champcar current |
| race |  Michigan II |
| year | 1981 |
| team | car | entry | driver | start | finish | chassis | engine | laps led | * | |
| Penske | 6 | Gould Charge | Rick Mears | | 1 | 1 | Penske PC-9B/81 | Cosworth DFX | 22 | |
| Patrick | 40 | STP | Mario Andretti | | 3 | 2 | Wildcat Mk.VIII | Cosworth DFX | 24 | |
| Longhorn | 8 | Longhorn Racing | Al Unser | | 10 | 3 | Eagle 81 [8101] | Cosworth DFX | 4 | |
| Penske | 7 | AB Dick Pacemaker | Bill Alsup | | 6 | 4 | Penske PC-9B/81 | Cosworth DFX | ||
| Patrick | 20 | STP | Gordon Johncock | | 22 | 5 | Wildcat Mk.VIII | Cosworth DFX | ||
| Kraco | 99 | Kraco | Dick Ferguson | | 11 | 6 | Penske PC-7/79 [l] | Cosworth DFX | ||
| Penske | 3 | Norton Spirit | Bobby Unser | | 2 | 7 | Penske PC-9B/81 | Cosworth DFX | ||
| Machinists Union | 31 | Machinists Union | Larry Dickson | | 13 | 8 | Penske PC-7/79 [k] | Cosworth DFX | ||
| Gohr Racing | 56 | Genesee Beer | Tom Bigelow | | 17 | 9 | Penske PC-7/79 [006] | Chevy Donovan 355 V8 | ||
| H&R Racing | 16 | Provimi Veal | Tony Bettenhausen Jr. | | 15 | 10 | Phoenix 80 [a] | Cosworth DFX | ||
| McElreath | 23 | McElreath Racing | Jim McElreath | | 16 | 11 | Eagle 74 [7407] | Offy Drake tc | ||
| Jet Engineering | 64 | Jet Engineering | Steve Chassey | | 23 | 12 | Eagle 81 [8102] | Chevy Jet 355 V8 | ||
| Fletcher | 35 | Montgomery Ward | Bob Lazier | | 14 | 13 | Penske PC-7/79 [002] | Cosworth DFX | ||
| Rattlesnake | 42 | Steve Vuckovich Racing | Billy Vukovich | | 20 | 14 | Watson 77 [1] | Offy Drake tc | ||
| Bill Tempero | 15 | O'Hanlon | Bill Tempero | | 26 | 15 | McLaren M24B [002] | Chevy 355 V8 | ||
| Ross Davis Racing | 77 | Ross Davis Racing | Ross Davis | | 24 | 16 | Wildcat Mk.IV [2] | DGS | ||
| Ohio Racing Associates | 49 | Ohio Racing Associates | Steve Krisiloff | | 7 | 17 | Longhorn LR-02 [02] | Cosworth DFX | ||
| Morales | 5 | Alex Foods | Pancho Carter | | 5 | 18 | Penske PC-7/79 [a] | Cosworth DFX | ||
| Bignotti-Cotter | 2 | Texaco Star | Tom Sneva | | 21 | 19 | March 81C [02] | Cosworth DFX | 21 | |
| Hall Racing | 1 | Pennzoil | Johnny Rutherford | | 4 | 20 | Chaparral 2K | Cosworth DFX | 3 | |
| Rager | 66 | McCray Plastering | Roger Rager | | 18 | 21 | Wildcat Mk.V [1] | Chevy 355 V8 | ||
| Metro Racing | 57 | Nyloncraft Founder's | Cliff Hucul |  | 25 | 22 | McLaren M16C/D [B-2] | Offy Drake tc | ||
| Garza | 55 | Esso/Psachie-Garza | Josele Garza |  | 9 | 23 | Penske PC-9/80 | Cosworth DFX | ||
| Brayton | 37 | Forsythe-Brayton | Scott Brayton | | 12 | 24 | Penske PC-7/79 [n] | Cosworth DFX | ||
| Leader Card | 22 | Vermont American | Dick Simon | | 19 | 25 | Watson 78 [1] | Offy Drake tc | ||
| All American Racers | 48 | Pepsi Challenger | Mike Mosley | | 8 | 26 | Eagle 81 [8103] | Chevy Donovan 355 V8 |
26 entries
