PORSCHE RACING HISTORYPorsche 911 S - Chassis No. 911 030 1263
19 March 1977 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Lawrence P. Pleasants (USA) | Busch Beer | 22nd | 13th | 55th | 174 laps |
15 May 1977 - Mid-America 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA) | Busch Beer | 14th | 6th | 18th | 30 laps |
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Jack Refenning (USA)/Ray Mummery (USA) | Terry Wolters | 14th | 3rd | 55th | 584 laps |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Wayne Miller (USA) | Terry Wolters | 35th | 17th | 58th | 129 laps - Mechanical |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Wayne Miller (USA) | Terry Wolters | 27th | 8th | 44th | 86 laps |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Wayne Miller (USA) | Terry Wolters | 54th | 12th | 62nd | 16 laps - DNF |
4 February 1979 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Nort Northam (USA)/Richard Weiss (USA) | Southern Racing Ent. | 21st | 9th | 67th | 488 laps |
17 March 1979 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Bob Buchler (USA)/Nort Northam (USA) | Moran Construction | 21st | 5th | 58th | 182 laps |
4 July 1979 - Daytona Paul Revere 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Nort Northam (USA) | Moran Construction | 34th | 13th | 48th | 34 laps - DNF |
25 November 1979 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/M. L. Speer (USA) | Moran Construction | 31st | 9th | 65th | 39 laps |
3 February 1980 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 SC | 911 030 1263 | GTU | M. L. Speer (USA)/Ray Ratcliff (USA)/Terry Wolters (USA) | Moran Construction | 18th | 6th | 57th | 489 laps |
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 SC | 911 030 1263 | GTU | Ray Ratcliff (USA)/M. L. Speer (USA)/Terry Wolters (USA) | Moran Construction | 35th | 12th | 68th | 161 laps - DNF |
30 November 1980 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 SC | 911 030 1263 | GTU | M. L. Speer (USA)/Ray Ratcliff (USA) | Moran Construction | 22nd | 6th | 65th | 55 laps |
31 January 1982 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 08 | Porsche 911 SC | 911 030 1263 | GTU | Alan Howes (USA)/Paul Nacthwey (USA)/Oliver Jones (USA) | Portia Parlor | 54th | 14th | 73rd | 103 laps - Engine |
28 November 1982 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 99 | Porsche 911 SC | 911 030 1263 | GTU | Jack Refenning (USA)/Mike Schaefer (USA) | 29th | 7th | 29th | 69 laps |
6 February 1983 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 911 SC | 911 030 1263 | GTU | Mike Schaefer (USA)/Jack Refenning (USA)/John Belperche (USA)/Doug Zitza (USA) | 901 Shop | 14th | 2nd | 70th | 525 laps |
19 March 1983 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 911 SC | 911 030 1263 | GTU | Mike Schaefer (USA)/Doug Zitza (USA)/Jack Refenning (USA) | 901 Shop | 22nd | 8th | 63rd | 198 laps |
1 May 1983 - Trans-Am Moroso - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 911 SC | 911 030 1263 | Mike Schaefer (USA) | 901 Shop (USA) | 18th | 36th | 40 laps |
3 July 1983 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 911 SC | 911 030 1263 | GTU | Mike Schaefer (USA)/Ren Tilton (USA) | 901 Shop | 21st | 6th | 36th | 55 laps |
27 November 1983 - Daytona Finale 3 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 911 SC | 911 030 1263 | GTU | Mike Schaefer (USA)/Tom Sheehy (USA) | 901 Shop | 28th | 8th | 52nd | 77 laps |
5 February 1984 - Daytona 24 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 90 | Porsche 911 SC | 911 030 1263 | GTU | Mike Schaefer (USA)/Jeff Andretti (USA)/Nick Nicholson (USA)/Jack Refenning (USA) | 901 Shop | 43rd | 12th | 12th | 258 laps - DNF |