PORSCHE RACING HISTORY911 S
1978
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 S | GTU | Dave White (USA)/Gary Mesnick (USA)/J. Dana Roehrig (USA) | J. Dana Roehrig | 11th | 1st | 26th | 604 laps - Engine | |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA)/Mark Greb (USA) | Drolsom Racing (USA) | 12th | 2nd | 57th | 592 laps | |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Jack Refenning (USA)/Ray Mummery (USA) | Terry Wolters | 14th | 3rd | 55th | 584 laps |
| 60 | Porsche 911 S | GTU | John Thomas (USA)/Ren Tilton (USA)/Rusty Bond (USA) | R & R Racing | 17th | 5th | 34th | 551 laps | |
| 29 | Porsche 911 S | GTU | Richard Weiss (USA)/Bill Alsup (USA)/Bill Follmer (USA) | Richard C. Weiss | 18th | 6th | 35th | 550 laps | |
| 87 | Porsche 911 S | GTU | Pedro Vazquez (USA)/Ron Oyler (USA)/Joseph Hamilton (USA)/Gunter Hamilton (USA) | Pedro Vazquez, Jr. (USA) | 43rd | 15th | 67th | 360 laps | |
| 51 | Porsche 911 S | GTU | John Hotchkis (USA)/Robert Kirby (USA)/Dennis Aase (USA) | Wynn's International | 58th | 18th | 63rd | 85 laps - Engine |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 77 | Porsche 911 S | GTU | Francisco Romero (YV)/Ernesto Soto (YV) | Bill Scott Racing | 6th | 1st | 25th | 219 laps | |
| 42 | Porsche 911 S | GTU | Chiqui Soldevilla (PR)/Luis Gordillo (PR) | El Sol Racing | 7th | 2nd | 73rd | 213 laps | |
| 50 | Porsche 911 S | GTU | Fritz Hochreuter (CDN)/Rudy Bartling (CDN)/Rainer Brezinka (CDN) | Fritz Hochreuter (CDN) | 16th | 6th | 43rd | 189 laps | |
| 01 | Porsche 911 S | GTU | Dave White (USA)/J. Dana Roehrig (USA)/Gary Mesnick (USA) | Roehrig Racing Inc. | 18th | 7th | 30th | 185 laps | |
| 70 | Porsche 911 S | GTU | M. L. Speer (USA)/Windle Turley (USA) | Race Car Ent. | 25th | 10th | 56th | 168 laps | |
| 88 | Porsche 911 S | GTU | Joseph Hamilton (USA)/Chuck Wade (USA)/Ron Collins (USA) | Hamilton House Racing | 27th | 12th | 47th | 167 laps | |
| 51 | Porsche 911 S | GTU | John Hotchkis (USA)/Robert Kirby (USA)/Dennis Aase (USA) | Wynn's International | 32nd | 16th | 33rd | 142 laps - Mechanical | |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Wayne Miller (USA) | Terry Wolters | 35th | 17th | 58th | 129 laps - Mechanical |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA) | Drolsom Racing Inc. (USA) | 44th | 21st | 67th | 98 laps - Engine | |
| 87 | Porsche 911 S | GTO | Pedro Vazquez (USA)/Ron Oyler (USA) | Pedro Vazquez (USA) | 47th | 12th | 68th | 83 laps - Gearbox | |
| 27 | Porsche 911 S | GTU | Ray Mummery (USA)/Jack Refenning (USA)/Tom Sheehy (USA) | Miami Auto Racing | 52nd | 23rd | 50th | 70 laps - Clutch |
2 April 1978 - Talladega 6 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 S | GTU | Dave White (USA)/J. Dana Roehrig (USA) | J. Dana Roehrig | 9th | 2nd | 20th | 151 laps | |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA) | Drolsom Racing (USA) | 10th | 3rd | 23rd | 149 laps | |
| 27 | Porsche 911 S | GTU | Ray Mummery (USA)/Jack Refenning (USA)/Tom Sheehy (USA) | Ray Mummery | 15th | 5th | 26th | 142 laps | |
| 60 | Porsche 911 S | GTU | Rusty Bond (USA)/Ren Tilton (USA) | R & R Racing | 29th | 9th | 22nd | 88 laps - Overheating |
4 June 1978 - Trans-Am Westwood - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 26 | Porsche 911 S | TA-II | Tom Masterson (USA) | Swag Engineering (USA) | 14th | 5th | 24th | 48 laps |
18 June 1978 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 S | GTU | Dave White (USA) | 12th | 1st | 18th | 31 laps | ||
| 42 | Porsche 911 S | 119 220 830 | GTU | Tom Ashby (USA) | 19th | 4th | 29th | 29 laps | |
| 34 | Porsche 911 S | GTU | George Drolsom (USA) | Drolsom Racing (USA) | 20th | 5th | 34th | 29 laps | |
| 64 | Porsche 911 S | GTU | Dennis Aase (USA) | 28th | 7th | 33rd | 17 laps |
25 June 1978 - Trans-Am Mont-Tremblant - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 15 | Porsche 911 S | TA-II | Fritz Hochreuter (CDN) | Fritz Hochreuter (CDN) | 15th | 8th | 24th | 34 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 01 | Porsche 911 S | GTU | Dave White (USA) | 8th | 1st | 28th | 61 laps | ||
| 42 | Porsche 911 S | 119 220 830 | GTU | Tom Ashby (USA)/Bill Bean (USA) | Tom Ashby | 10th | 2nd | 30th | 61 laps |
| 60 | Porsche 911 S | GTU | Rusty Bond (USA)/Ren Tilton (USA) | 17th | 3rd | 40th | 58 laps - DNF | ||
| 02 | Porsche 911 S | GTU | J. Dana Roehrig (USA)/J. Kurt Roehrig (USA) | 18th | 4th | 43rd | 58 laps | ||
| 88 | Porsche 911 S | GTU | Joseph Hamilton (USA)/Chuck Wade (USA) | Hamilton House Racing | 21st | 7th | 39th | 57 laps | |
| 50 | Porsche 911 S | GTU | Fritz Hochreuter (CDN)/Rainer Brezinka (CDN) | 24th | 10th | 47th | 57 laps | ||
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Hugh Davenport (USA) | Drolsom Racing (USA) | 26th | 12th | 51st | 55 laps | |
| 4 | Porsche 911 S | GTU | Chiqui Soldevilla (PR) | 35th | 14th | 46th | 44 laps - DNF |
8 July 1978 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 77 | Porsche 911 S | TA 1 | Bruce Jennings (USA)/John O'Steen (USA) | Bruce Jennings (USA) | 13th | 2nd | 40th | 122 laps | |
| 88 | Porsche 911 S | TA 2 | Joseph Hamilton (USA)/Ron Collins (USA)/Chuck Wade (USA) | Hamilton House Racing | 34th | 17th | 36th | 72 laps - Accident | |
| 74 | Porsche 911 S | GT | Bill Scott (USA)/Pierre Honegger (USA)/David Weir (USA) | Z & W Enterprises (USA) | 39th | 3rd | 37th | 18 laps - Accident |
30 July 1978 - Sears Point 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 911 S | GTO | Gary Nylander (USA) | 27th | 13th | 21st | 0 laps - DNF |
19 August 1978 - Trans-Am Mosport - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 50 | Porsche 911 S | TA-II | Fritz Hochreuter (CDN) | Fritz Hochreuter (CDN) | 17th | 11th | 26th | 35 laps |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 42 | Porsche 911 S | 119 220 830 | GTU | Bill Bean (USA) | 14th | 1st | 29th | 95 laps | |
| 34 | Porsche 911 S | GTU | George Drolsom (USA)/Mark Greb (USA) | Drolsom Racing (USA) | 17th | 3rd | 35th | 93 laps | |
| 51 | Porsche 911 S | GTU | Robert Kirby (USA)/John Hotchkis (USA) | 23rd | 6th | 28th | 89 laps | ||
| 01 | Porsche 911 S | GTU | Dave White (USA)/Dave Panaccione (USA) | 24th | 7th | 41st | 87 laps | ||
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Wayne Miller (USA) | Terry Wolters | 27th | 8th | 44th | 86 laps |
| 60 | Porsche 911 S | GTU | Rusty Bond (USA)/Ren Tilton (USA) | 29th | 9th | 33rd | 84 laps | ||
| 27 | Porsche 911 S | GTU | Jack Refenning (USA)/John Gunn (USA) | 33rd | 10th | 34th | 73 laps | ||
| 64 | Porsche 911 S | GTU | Dennis Aase (USA)/Jim Cook (USA) | 38th | 12th | 25th | 47 laps - DNF |
4 September 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 S | GTO | Robert Kirby (USA) | John Hotchkis | 16th | 9th | 23rd | 35 laps |
8 October 1978 - Trans-Am Laguna Seca - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 61 | Porsche 911 S | TA-II | Gary Nylander (USA) | Bear Gulch Racing | 27th | 10th | 30th | 42 laps |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 50 | Porsche 911 S | GTO | Fritz Hochreuter (CDN)/Rainer Brezinka (CDN) | Fritz Hochreuter (CDN) | 22nd | 11th | 41st | 56 laps | |
| 27 | Porsche 911 S | GTU | Ray Mummery (USA)/Tom Sheehy (USA) | Miami Auto Racing | 24th | 2nd | 55th | 56 laps | |
| 02 | Porsche 911 S | GTU | Dave White (USA) | Roehrig Racing | 25th | 3rd | 57th | 56 laps | |
| 42 | Porsche 911 S | 119 220 830 | GTU | Tom Ashby (USA)/Bill Bean (USA) | Bullwinkele Racing | 26th | 4th | 40th | 55 laps |
| 34 | Porsche 911 S | GTU | George Drolsom (USA) | Drolsom Racing (USA) | 28th | 5th | 56th | 55 laps | |
| 88 | Porsche 911 S | GTU | Joseph Hamilton (USA)/Rob Hoskins (USA)/Chuck Wade (USA) | Hamilton House Racing | 40th | 8th | 48th | 40 laps - DNF | |
| 08 | Porsche 911 S | 911 030 1263 | GTU | Terry Wolters (USA)/Wayne Miller (USA) | Terry Wolters | 54th | 12th | 62nd | 16 laps - DNF |