| 5.2.1978 | 24 h Daytona | 07 | #911 560 9114 | Cowart / Mendez / Castellano | Morrison's Porsche | 36th |
| 5.2.1978 | 24 h Daytona | 24 | #911 460 9056 | Frank / Bergstrom | Executive Industries | 15th |
| 5.2.1978 | 24 h Daytona | 32 | #911 460 9048 | Earle / Akin / Knoop | Earle/Akin Racing Associates Inc. | 7th |
| 5.2.1978 | 24 h Daytona | 33 | #911 460 9113 | Fernandez / Paul / Currin | Boricua Racing | 4th |
| 5.2.1978 | 24 h Daytona | 39 | | Pickett / Bonnet / Canepa | Pickett Racing | 62nd |
| 5.2.1978 | 24 h Daytona | 43 | | Pike / Wever / Bodoh | Allan F. Bodoh | DNA |
| 5.2.1978 | 24 h Daytona | 45 | | Steele / Zulkowski / Gaeta | Vann's Auto Body Shop | DNA |
| 5.2.1978 | 24 h Daytona | 46 | #911 360 0915 | DeNarvaez / Naon / Garcia | Mauricio DeNarvaez | 20th |
| 5.2.1978 | 24 h Daytona | 54 | #911 460 0100 | Tunstall / Behr / Timolat | T&C/Big Apple Racing | 61st |
| 5.2.1978 | 24 h Daytona | 58 | #911 460 9054 | Febles / Poole | Diego Febles Racing | 3rd |
| 5.2.1978 | 24 h Daytona | 68 | #005 0009 | Mendez / Gonzalez / Ferrer | Luis Mendez | 23rd |
| 5.2.1978 | 24 h Daytona | 89 | | Woodard / Parish / Causey | Barrick Motor Racing | DNA |
| 25.2.1978 | Stuttgart Preis Hockenheim | | | Marco Vanoli | | ?th |
| 25.2.1978 | Stuttgart Preis Hockenheim | | | Klaus Utz | Hahn-Sportwagen-GmbH | ?th |
| 25.2.1978 | Stuttgart Preis Hockenheim | | | Hans Großmann | Sports Car Club of Stuttgart | ?th |
| 12.3.1978 | National Montlhéry [Gr.5/Gr.6] | 1 | | Jean-Pierre Castel | | DNA |
| 12.3.1978 | National Montlhéry [Gr.5/Gr.6] | 3 | | "Pescal" | | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 4 | | Jacques Guérin | | DNA |
| 12.3.1978 | National Montlhéry [Gr.5/Gr.6] | 5 | | Pierre Herbland-Morin | | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 6 | | Daniel Venot | | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 8 | | Jean-Pierre Delaunay | | 3rd |
| 12.3.1978 | National Montlhéry [Gr.5/Gr.6] | 9 | | Jean-Pierre Bleynie | | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 10 | | Bernard Salam | | DNA |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 22 | | Fritz Müller | Fritz Müller | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 40 | #911 360 0643 | Georges Bourdillat | | 1st |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 42 | #911 350 1121? | Anny-Charlotte Verney | | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 44 | | Pierre Favolini | | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 46 | | Henry Sain | | DNA |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 48 | | Christian Bussi | | 2nd |
| 12.3.1978 | National Montlhéry [Gr.3/Gr.4] | 50 | | Jean-Pierre Bleynie | | 4th |
| 12.3.1978 | National Montlhéry [Gr.5/Gr.6] | | | Guérin | | 1st |
| 18.3.1978 | 12 h Sebring | 07 | #911 560 9114 | Cowart / Craw / Castellano | Morrison's Inc. | 28th |
| 18.3.1978 | 12 h Sebring | 3 | | Freeman / Harmon / Leydecker | Bill Freeman Racing | 54th |
| 18.3.1978 | 12 h Sebring | 8 | #911 460 0035 | Beasley / Jennings | Robert Beasley | 62nd |
| 18.3.1978 | 12 h Sebring | 24 | #911 460 9056 | Frank / Bergstrom | Executive Industries | 50th |
| 18.3.1978 | 12 h Sebring | 32 | #911 460 9048 | Earle / Akin / Knoop | Earle & Akin Racing | 5th |
| 18.3.1978 | 12 h Sebring | 33 | #911 460 9113 | Paul / Fernandez | JLP Racing | 4th |
| 18.3.1978 | 12 h Sebring | 46 | #911 360 0915 | DeNarvaez / Naon | Mauricio De Narvaez | 51st |
| 18.3.1978 | 12 h Sebring | 58 | | Febles / Poole | Diego Febles Racing | 13th |
| 18.3.1978 | 12 h Sebring | 60 | | Berner / Goebbels | Motex Automotive | DNA |
| 18.3.1978 | 12 h Sebring | 68 | #005 0009 | Mendez / Rodriguez / Lopez | Luis Mendez | DNA |
| 18.3.1978 | 12 h Sebring | 79 | #004 0002 | Callas / Papke / Cook | Rennsport Porsche Works | 20th |
| 18.3.1978 | 12 h Sebring | 91 | | Frank / Schramm | Framm Promotions/W. Frank | 34th |
| 19.3.1978 | 6 h Mugello | 14 | | Kristoffersen / Sindel | Wrangler Racing | DNF |
| 2.4.1978 | 6 h Talladega | 07 | #911 560 9114 | Dave Cowart | Morrison's Inc. | DNA |
| 2.4.1978 | National Montlhéry [Gr.4/Gr.5/Gr.6] | 31 | | Roland Ennequin | | DNA |
| 2.4.1978 | 6 h Talladega | 32 | #911 460 9048 | Earle / Akin | Earle & Akin Racing Associates | 5th |
| 2.4.1978 | 6 h Talladega | 33 | #911 460 9113 | Fernandez / Cowart | Boricua Racing | 4th |
| 2.4.1978 | National Montlhéry [Gr.4/Gr.5/Gr.6] | 35 | | Jacques Guérin | | DNA |
| 2.4.1978 | National Montlhéry [Gr.4/Gr.5/Gr.6] | 37 | | Pierre Herbland-Morin | | DNA |
| 2.4.1978 | 6 h Talladega | 46 | #911 360 0915 | DeNarvaez | Mauricio DeNarvaez | 38th |
| 2.4.1978 | National Montlhéry [Gr.4/Gr.5/Gr.6] | 53 | | Georges Bourdillat | | DNA |
| 2.4.1978 | 6 h Talladega | 58 | | Febles / Romero | Diego Febles Racing | 21st |
| 2.4.1978 | Marlboro Cup Zolder | 77 | | Pit Weirig | | DNA |
| 2.4.1978 | Marlboro Cup Zolder | 91 | | "Alex" | | DNA |
| 16.4.1978 | 100 mile Road Atlanta | 07 | #911 560 9114 | Dave Cowart | Morrison's Inc. | 13th |
| 16.4.1978 | 100 mile Road Atlanta | 8 | #911 460 0035 | Bob Beasley | Bob Beasley | 16th |
| 16.4.1978 | 100 mile Road Atlanta | 33 | #911 460 9113 | Bonky Fernandez | Boricua Racing | 15th |
| 16.4.1978 | 6 h Dijon | 34 | #911 460 9059 | Bourdillat / Bernard | ASA Cachia | 12th |
| 16.4.1978 | 6 h Dijon | 37 | #911 350 1121? | Verney / Striebig | Anny-Charlotte Verney | 15th |
| 16.4.1978 | 100 mile Road Atlanta | 46 | #911 360 0915 | Mauricio DeNarvaez | Mauricio DeNarvaez | 39th |
| 16.4.1978 | 100 mile Road Atlanta | 51 | #911 560 9122 | Robert Frostrom | Robert Frostrom | 34th |
| 16.4.1978 | 100 mile Road Atlanta | 60 | #005 0009 | Luis Mendez | Mendez Racing | 17th |
| 16.4.1978 | 100 mile Road Atlanta | 91 | | Werner Frank | Framm Promotions | 19th |
| 16.4.1978 | DARM Hockenheim | | | Klaus Utz | Klaus Utz | ?th |
| 16.4.1978 | DARM Hockenheim | | #911 460 9018 | Jürgen Lässig | Autohaus Max Moritz GmbH | ?th |
| 16.4.1978 | DARM Hockenheim | | | Fritz Müller | Fritz Müller | ?th |
| 16.4.1978 | DARM Hockenheim | | | Erich Schiebler | Erich Schiebler | 1st |
| 16.4.1978 | DARM Hockenheim | | | Hans Großmann | Sports Car Club of Stuttgart | 3rd |
| 16.4.1978 | DARM Hockenheim | | #911 360 0909 | Richard Weber | R. Weber | 4th |
| 16.4.1978 | SM Monza | | #911 460 9053 | Edy Brandenberger | | ?th |
| 16.4.1978 | SM Monza | | | Athos Severi | | ?th |
| 16.4.1978 | DARM Hockenheim | | | Karl-Josef Römer | Karl-J. Römer | ?th |
| 23.4.1978 | GP Zolder | 77 | | Pit Weirig | Screen-Center | DNA |
| 23.4.1978 | GP Zolder | 91 | | "Alex" | Excelsior Rombouts Rizla | DNA |
| 23.4.1978 | SM Dijon [Gr.4/Gr.5] | | | Sarteur | | 7th |
| 23.4.1978 | SM Dijon [Gr.4/Gr.5] | | | Marco Vanoli | | 4th |
| 23.4.1978 | SM Dijon [Gr.4/Gr.5] | | #911 460 9053 | Edy Brandenberger | | 1st |
| 30.4.1978 | SM Hockenheim | | #911 460 9053 | Edy Brandenberger | | raced |
| 1978 | 6 h Dakar | 9 | | Jahn / Utz | | DNA |
| 1978 | 100 laps Magny-Cours | 47 | #911 350 1121? | Verney / Lapeyre | | 1st |
| 1978 | 100 laps Magny-Cours | | #911 360 0643 | Bourdillat / Bernard | | 2nd |
| 1978 | CI Gr.4 Magione | | | Agazzotti | | 2nd |