PORSCHE RACING HISTORY914/6
1978
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 85 | Porsche 914/6 | GTU | John Hulen (USA)/Ron Coupland (USA)/Nick Engels (USA) | John Hulen (USA) | 67th | 47th | 0 laps - Engine at Start |
18 March 1978 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 62 | Porsche 914/6 | 914 043 0593 | GTU | Bill Koll (USA)/David Hamren (USA)/Dennis Sherman (USA) | William J. Koll (USA) | 10th | 3rd | 53rd | 209 laps |
| 85 | Porsche 914/6 | GTU | John Hulen (USA)/Ron Coupland (USA)/Nick Engels (USA) | John Hulen (USA) | 23rd | 9th | 40th | 174 laps | |
| 00 | Porsche 914/6 | GTU | Steve Southard (USA)/Jim Trueman (USA) | Red Roof Inns (USA) | 29th | 13th | 63rd | 164 laps - Mechanical | |
| 21 | Porsche 914/6 | 471 29 12215 | GTU | Vince DiLella (USA)/Manuel Cueto (USA) | DiLella Racing (USA) | 31st | 15th | 66th | 152 laps |
2 April 1978 - Talladega 6 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 62 | Porsche 914/6 | 914 043 0593 | GTU | Bill Koll (USA)/David Hamren (USA) | William Koll (USA) | 11th | 4th | 32nd | 148 laps |
4 June 1978 - Trans-Am Westwood - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 23 | Porsche 914/6 | 473 29 24107 | TA-I | Bob Zulkowski (USA) | Metal Craft Racing (USA) | 21st | 14th | 19th | 19 laps - CV Joint |
| 02 | Porsche 914/6 | 914 143 0332 | TA-I | Bruce Sanders (USA) | Bruce Sanders | DNS |
11 June 1978 - Trans-Am Portland - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 914/6 | TA-I | Scott Taylor (USA) | 17th | 11th | 39th | 42 laps | ||
| 23 | Porsche 914/6 | 473 29 24107 | TA-I | Bob Zulkowski (USA) | Metal Craft Racing (USA) | 32nd | 21st | 32nd | 5 laps - Engine |
| 02 | Porsche 914/6 | 914 143 0332 | TA-I | Bruce Sanders (USA) | Bruce Sanders | 33rd | 22nd | 34th | 3 laps - Brakes |
18 June 1978 - Brainerd 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 62 | Porsche 914/6 | 914 043 0593 | GTU | Bill Koll (USA) | William Koll (USA) | 18th | 3rd | 22nd | 29 laps |
4 July 1978 - Daytona 250 Miles Paul Revere - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 62 | Porsche 914/6 | 914 043 0593 | GTU | Bill Koll (USA) | William Koll (USA) | 22nd | 8th | 48th | 57 laps |
| 85 | Porsche 914/6 | GTU | John Hulen (USA)/Ron Coupland (USA) | John Hulen (USA) | 28th | 13th | 42nd | 53 laps |
27 August 1978 - Mid Ohio 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 85 | Porsche 914/6 | GTU | John Hulen (USA)/Ron Coupland (USA) | John Hulen (USA) | 18th | 4th | 48th | 92 laps | |
| 40 | Porsche 914/6 | GTU | Steve Southard (USA) | 34th | 11th | 36th | 61 laps - DNF |
4 September 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 85 | Porsche 914/6 | GTO | John Hulen (USA)/Ron Coupland (USA) | John Hulen (USA) | 20th | 10th | 26th | 34 laps |
8 October 1978 - Trans-Am Laguna Seca - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 16 | Porsche 914/6 | TA-II | Darrel Overstreet (USA) | Oversteering Racing (USA) | 25th | 9th | 39th | 44 laps | |
| 23 | Porsche 914/6 | 473 29 24107 | TA-I | Bob Zulkowski (USA) | Metal Craft Racing (USA) | 31st | 19th | 24th | 33 laps - Turbo Failure |
26 November 1978 - Daytona Finale 250 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 21 | Porsche 914/6 | 471 29 12215 | GTU | Vince DiLella (USA)/Manuel Cueto (USA) | DiLella Racing (USA) | 44th | 10th | 67th | 31 laps |
| 40 | Porsche 914/6 | GTU | Steve Southard (USA)/William Koch (USA) | Performance Specialists | 59th | 14th | 75th | 7 laps - DNF |