| Au Grattan 2003 | ||||||||||
| Formula Race C | ||||||||||
| Finish Position | Car # | Name | Laps | Lag | Fast lap (seconds) | Speed | Class | Class pos | Car | Hometown |
| 1 | 05 | Mark Harmer | 15 | 81.712 | 86.383 | 4B | 1 | 68 Brabham BT-21-Green | Troy MI | |
| 2 | 19 | Joe Blacker | 15 | 1.777 | 81.545 | 86.261 | 4B | 2 | 69 Brabham BT-29-Red | Columbia MD |
| 3 | 36 | Lowell Blossom | 15 | 1.913 | 81.521 | 86.251 | 4B | 3 | 69 Brabham BT29-Orange | Charlevoix MI |
| 4 | 66 | Andrew Dyson | 15 | 54.314 | 83.581 | 82.787 | 4B | 4 | 66 Brabham BT18-White | West Bloomfield MI |
| 5 | 7 | Tom Pixley | 15 | 57.505 | 85.935 | 82.585 | 7C | 1 | 78 Wheeler Super Vee-Red | Traverse City MI |
| 6 | 21 | Dave Jordano | 15 | 01:01.2 | 85.806 | 82.354 | 4F | 1 | 72 Titan MK6-Red | Chicago IL |
| 7 | 691 | Len Hoffius | 14 | -- 1 lap -- | 85.773 | 82.125 | 7C | 2 | 78 Lola FSV-Yellow | Rockford MI |
| 8 | 77 | Bill Hallandal | 14 | 29.48 | 88.114 | 80.198 | 4F | 2 | 69 Caldwell D-9 FF-Red | Bellaire MI |
| 9 | 41 | Jeff Snook | 14 | 29.689 | 86.961 | 80.185 | 4F | 3 | 68 Alexis MK14-White | Bowling Green OH |
| 10 | 69 | Martin Bagby | 14 | 55.736 | 89.658 | 78.557 | 4F | 4 | 70 Lola T-200-Black | Dubuque IA |
| 11 | 2 | Donald Dickey | 0 | -- 15 laps -- | 0 | 0 | 4F | 5 | 70 Titan 6A-Blue/White | Marissa IL |
| 12 | 9 | George Nienhouse | 0 | 0 | 0 | 4F | 6 | 72 Hawke- | Traverse City MI | |
| 13 | 35 | Ron Smit | 0 | 0 | 0 | 7C | 3 | 71 Royale RP9-Red/Gray | Caledonia MI | |
| 14 | 44 | Robert Maurer | 0 | 0 | 0 | 7C | 4 | 74 Lola T-322-Yellow | Pella IA | |
| 15 | 60 | Frank Newton | 0 | 0 | 0 | 4F | 7 | 72 Merlyn MK 20A-White | Lawton MI | |
| 16 | 62 | Dave Jordano | 0 | 0 | 0 | 7B | 1 | 76 Lola FA-Yellow | Chicago IL | |
| 17 | 93 | Allen Cady | 0 | 0 | 0 | 4F | 8 | 69 Merlyn MK 17 FF-Blue/White | Farmington Hills MI | |