The 1987 Trans-Am Series was the 22nd running of the Sports Car Club of America's premier series. Merkur nearly swept the season, with Porsche winning at Brainerd.
| Round | Date | Circuit | Winning driver | Winning vehicle | |
|---|---|---|---|---|---|
| 1 | 4 April | Long Beach |  Scott Pruett | Merkur XR4Ti | |
| 2 | 31 May | Sears Point | Scott Pruett | Merkur XR4Ti | |
| 3 | 7 June | Portland | Pete Halsmer | Merkur XR4Ti | |
| 4 | 20 June | Detroit | Scott Pruett | Merkur XR4Ti | |
| 5 | 12 July | Mid Ohio | Scott Pruett | Merkur XR4Ti | |
| 6 | 19 July | Brainerd | Elliott Forbes-Robinson | Porsche 944 | |
| 7 | 1 August | Lime Rock Park | Pete Halsmer | Merkur XR4Ti | |
| 8 | 29 August | Road America | Pete Halsmer | Merkur XR4Ti | |
| 9 | 13 September | Memphis | Scott Pruett | Merkur XR4Ti | |
| 10 | 20 September | Mosport | Scott Pruett | Merkur XR4Ti | |
| 11 | 11 October | Road Atlanta | Pete Halsmer | Merkur XR4Ti | |
| NP | 7 November | St. Petersburg (Non-points special) | Pete Halsmer | Merkur XR4Ti | |
| 12 | 8 November | St. Petersburg | Scott Pruett | Merkur XR4Ti |
| Pos | Driver | Points | |
|---|---|---|---|
| 1 | Scott Pruett | 191 | |
| 2 | Les Lindley | 129 | |
| 3 | Pete Halsmer | 120 | |
| 4 | Jim Derhaag | 111 | |
| 5 | Deborah Gregg | 109 | |
| 6 | Elliott Forbes-Robinson | 73 | |
| 7 | Bruce Nesbitt | 55 | |
| 8 | Paul Gentilozzi | 53 | |
| 9 | Bill Doyle | 52 | |
| 10 | Jerry Thompson | 50 |