| 2.4.1978 | DRM Nürburgring 300 | 2 | #930 890 0013 | Bob Wollek | Vaillant-Kremer-Team | 1st |
| 2.4.1978 | DRM Nürburgring 300 | 3? | #930 890 0012 | Dieter Schornstein | Porsche-Kremer-Racing-Team | 11th |
| 2.4.1978 | DRM Nürburgring 300 | 4 | #007 00016 | "John Winter" | Porsche-Kremer-Racing-Team | 9th |
| 2.4.1978 | DRM Nürburgring 300 | 5 | #930 890 0017 | Manfred Schurti | Jägermeister Max Moritz Team | DNF |
| 2.4.1978 | DRM Nürburgring 300 | 6 | #930 890 0015 | Toine Hezemans | Weisberg-Gelo-Team | 2nd |
| 2.4.1978 | DRM Nürburgring 300 | 8 | #930 890 0011 | John Fitzpatrick | Weisberg-Gelo-Team | 6th |
| 2.4.1978 | DRM Nürburgring 300 | 9 | #930 890 0020 | Klaus Ludwig | Weisberg-Gelo-Team | 3rd |
| 2.4.1978 | DRM Nürburgring 300 | 10 | #930 890 0014 | Franz Konrad | Konrad-Racing | 5th |
| 2.4.1978 | DRM Nürburgring 300 | 11 | #930 890 0016 | Reinhold Jöst | Liqui-Moly-Equipe | 4th |
| 2.4.1978 | DRM Nürburgring 300 | 16 | #930 770 0907 | Volkert Merl | Konrad-Racing | 7th |
| 2.4.1978 | DRM Nürburgring 300 | 25 | #930 670 0540 | Klaus Drees | | DNF |
| 2.4.1978 | DRM Nürburgring 300 | 72 | | Kurt Simonsen | Team Västkuststugan | DNA |
| 16.4.1978 | 100 mile Road Atlanta | 0 | #930 890 0021 | Danny Ongais | Interscope Racing | 2nd |
| 16.4.1978 | 100 mile Road Atlanta | 00 | #930 890 0019 | Ted Field | Interscope Racing | 6th |
| 16.4.1978 | 6 h Dijon | 2 | #930 890 0022 | Wollek / Pescarolo | Porsche Kremer Racing | 1st |
| 16.4.1978 | 6 h Dijon | 3 | #930 890 0012 | Schornstein / "Winter" | Porsche Kremer Racing | 6th |
| 16.4.1978 | 6 h Dijon | 4 | #930 770 0904 | Haldi / Müller | Meccarillos Racing Team | DNF |
| 16.4.1978 | 6 h Dijon | 5 | #930 890 0011 | Fitzpatrick / Heyer / Hezemans | Gelo Racing Team | 2nd |
| 16.4.1978 | 6 h Dijon | 6 | #930 890 0015 | Hezemans / Ludwig | Gelo Racing Team | DNF |
| 16.4.1978 | 6 h Dijon | 8 | #930 890 0014 | Konrad / Merl | Konrad Racing | DNF |
| 16.4.1978 | 6 h Dijon | 9 | #930 770 0912 | Lafosse / Ballot-Léna | ASA Cachia | 5th |
| 16.4.1978 | 6 h Dijon | 11 | #930 770 0911 | Casoni / Mallet | Carlo Noce | DNF |
| 16.4.1978 | 6 h Dijon | 12 | #930 670 0540 | Kauwertz / Drees / Hähnlein | Klaus Drees | 10th |
| 16.4.1978 | 100 mile Road Atlanta | 28 | #930 770 0960 | Clif Kearns | Desperado Racing Inc. | 30th |
| 16.4.1978 | 100 mile Road Atlanta | 30 | #930 770 0905 | Gianpiero Moretti | Electrodyne Inc. | 4th |
| 16.4.1978 | 100 mile Road Atlanta | 59 | #930 770 0909 | Peter Gregg | Brumos Porsche Audi | 1st |
| 16.4.1978 | Benelux Zandvoort | 73 | #930 770 0903 | Claude Bourgoignie | | raced |
| 16.4.1978 | Benelux Zandvoort | 74 | #930 770 0908 | Henri van Oorschot | Henri van Oorschot | 1st |
| 16.4.1978 | Benelux Zandvoort | 75 | #930 670 0159 | Toon Suykerbuyk | | 2nd |
| 16.4.1978 | 100 mile Road Atlanta | 94 | #930 890 0023 | Don Whittington | Whittington Bros. | 7th |
| 16.4.1978 | 100 mile Road Atlanta | 95 | #930 770 0957 | Hurley Haywood | Bob Hagestad | 23rd |
| 23.4.1978 | GP Zolder | 73 | #930 770 0903 | Claude Bourgoignie | Team Willeme | raced |
| 23.4.1978 | GP Zolder | 74 | #930 770 0908 | Henri van Oorschot | Scorpio Racing | raced |
| 23.4.1978 | GP Zolder | 75 | #930 670 0159 | Toon Suykerbuyk | Scorpio Racing | raced |
| 23.4.1978 | GP Zolder | 76 | #006 00019-K1 | John Lagodny | Screen-Center | 2nd |
| 30.4.1978 | 100 mile Laguna Seca | 0 | #930 890 0021 | Danny Ongais | Interscope Racing | DNS |
| 30.4.1978 | 100 mile Laguna Seca | 00 | #930 890 0019 | Ted Field | Interscope Racing | 10th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 2 | #930 890 0013 | Bob Wollek | Vaillant-Kremer-Team | 4th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 3 | #930 890 0012 | Dieter Schornstein | Porsche-Kremer-Racing | 10th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 4 | #007 00016 | "John Winter" | Porsche-Kremer-Racing | DNF |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 5 | #930 890 0017 | Manfred Schurti | Jägermeister-Max-Moritz-Team | 8th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 6 | #930 890 0015 | Toine Hezemans | Weisberg-Gelo-Team | 1st |
| 30.4.1978 | 100 mile Laguna Seca | 6 | #930 770 0959 | Bob Bondurant | Dick Barbour Performance | 17th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 8 | #930 890 0011 | John Fitzpatrick | Weisberg-Gelo-Team | 2nd |
| 30.4.1978 | 100 mile Laguna Seca | 9 | #930 890 0033 | Dick Barbour | Dick Barbour Racing | 6th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 9 | #930 890 0020 | Klaus Ludwig | Weisberg-Gelo-Team | 3rd |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 10 | #930 890 0014 | Franz Konrad | Konrad-Racing | 5th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 11 | #930 890 0016 | Reinhold Jöst | Liqui-Moly-Equipe | DNF |
| 30.4.1978 | 100 mile Laguna Seca | 13 | #930 670 0180 | Hal Shaw, Jr. | Hal Shaw Racing | 13th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 16 | #930 770 0907 | Volkert Merl | Konrad-Racing | 6th |
| 30.4.1978 | 100 mile Laguna Seca | 16 | #930 890 0025 | George Follmer | Vasek Polak | 1st |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 18 | #930 670 0540 | Klaus Drees | Klaus Drees | 9th |
| 30.4.1978 | DRM Nürburgring Eifelrennen | 19 | #930 770 0904 | Claude Haldi | Meccarillos Racing Team | 7th |
| 30.4.1978 | 100 mile Laguna Seca | 30 | #930 770 0905 | Gianpiero Moretti | Electrodyne Inc. | 7th |
| 30.4.1978 | 100 mile Laguna Seca | 59 | #930 890 0018 | Peter Gregg | Brumos Porsche | 3rd |
| 30.4.1978 | 100 mile Laguna Seca | 94 | #930 890 0023 | Bill Whittington | Whittington Brothers Racing | 14th |
| 30.4.1978 | 100 mile Laguna Seca | 95 | #930 770 0957 | Hurley Haywood | Bob Hagestad | 2nd |
| 7.5.1978 | 100 mile Hallett | 00 | #930 890 0019 | Ted Field | Interscope Racing | 17th |
| 7.5.1978 | 100 mile Hallett | 30 | #930 770 0905 | Gianpiero Moretti | Electrodyne Inc. | 3rd |
| 7.5.1978 | 100 mile Hallett | 59 | #930 890 0018 | Peter Gregg | Brumos Porsche | 13th |
| 7.5.1978 | Colmar-Berg | 76 | #006 00019-K1 | John Lagodny | | 1st |
| 7.5.1978 | 100 mile Hallett | 94 | #930 890 0023 | Don Whittington | Whittington Brothers Racing | 12th |
| 14.5.1978 | 6 h Silverstone | 1 | #006 | Mass / Ickx | Martini Porsche | 1st |
| 14.5.1978 | 6 h Silverstone | 2 | #930 890 0016 | Jöst / Barth | Reinhold Joest | DNA |
| 14.5.1978 | 6 h Silverstone | 4 | #930 890 0020 | Heyer / Bell / Ludwig | Gelo Racing Team | DNF |
| 14.5.1978 | 6 h Silverstone | 5 | #930 890 0011 | Hezemans / Heyer / Fitzpatrick | Gelo Racing Team | 16th |
| 14.5.1978 | 6 h Silverstone | 6 | #930 890 0015 | Fitzpatrick / Hezemans | Gelo Racing Team | DNF |
| 14.5.1978 | 6 h Silverstone | 8 | #930 890 0022 | Wollek / Pescarolo | Porsche Kremer Racing | 2nd |
| 14.5.1978 | 6 h Silverstone | 9 | #007 00016 | Schornstein / "Winter" / Wollek | Porsche Kremer Racing | 5th |
| 14.5.1978 | 6 h Silverstone | 10 | | Simonsen / Lundgardh | Team Vastkustugan | 11th |
| 14.5.1978 | 6 h Silverstone | 11 | #930 890 0014 | Konrad / Merl | Konrad Racing | 6th |
| 14.5.1978 | 6 h Silverstone | 12 | #930 770 0907 | Konrad / Merl | Konrad Racing | DNS |
| 14.5.1978 | 6 h Silverstone | 14 | #930 770 0902 | Finotto / Facetti | Jolly Club | DNF |
| 14.5.1978 | 6 h Silverstone | 15 | #930 770 0904 | Haldi / Müller | Meccarillos Racing Team | DNF |
| 14.5.1978 | 6 h Silverstone | 16 | #930 770 0912 | Lafosse / Leclère | A.S.A. Cachia | DNF |
| 14.5.1978 | 6 h Silverstone | 17 | #930 670 0540 | Franey / Drees | Klaus Drees | 14th |
| 15.5.1978 | Benelux Zandvoort | 73 | #930 770 0903 | Claude Bourgoignie | | 1st |
| 15.5.1978 | Benelux Zandvoort | 74 | #930 770 0908 | Henri van Oorschot | Henri van Oorschot | 2nd |
| 15.5.1978 | Benelux Zandvoort | 75 | #930 670 0159 | Toon Suykerbuyk | | raced |
| 21.5.1978 | DRM Avus | 2 | #930 890 0013 | Bob Wollek | Vaillant-Kremer-Team | 5th |
| 21.5.1978 | DRM Avus | 3 | #930 890 0012 | Dieter Schornstein | Porsche-Kremer-Racing-Team | 7th |
| 21.5.1978 | DRM Avus | 4 | #007 00016 | "John Winter" | Porsche-Kremer-Racing-Team | DNF |
| 21.5.1978 | DRM Avus | 5 | #930 890 0017 | Manfred Schurti | Jägermeister-Max-Moritz-Team | 2nd |
| 21.5.1978 | DRM Avus | 6 | #930 890 0015 | Toine Hezemans | Weisberg-Gelo-Team | 1st |
| 21.5.1978 | Trans-Am Sears Point | 7 | #930 770 0958 | Ludwig Heimrath | Heimrath Racing | 19th |
| 21.5.1978 | DRM Avus | 8 | #930 890 0011 | John Fitzpatrick | Weisberg-Gelo-Team | 3rd |
| 21.5.1978 | DRM Avus | 9 | #930 890 0020 | Klaus Ludwig | Weisberg-Gelo-Team | 4th |
| 21.5.1978 | DRM Avus | 10 | #930 890 0014 | Franz Konrad | Konrad Racing | DNF |
| 21.5.1978 | DRM Avus | 11 | #930 890 0016 | Reinhold Jöst | Liqui-Moly-Equipe | 6th |
| 21.5.1978 | Trans-Am Sears Point | 13 | #930 670 0180 | Hal Shaw, Jr. | Hal Shaw Racing | 3rd |
| 21.5.1978 | DRM Avus | 16 | #930 770 0907 | Volkert Merl | Konrad Racing | DNF |
| 21.5.1978 | Trans-Am Sears Point | 16 | #930 770 0955 | George Follmer | Vasek Polak Racing | 15th |
| 28.5.1978 | 1000 km Nürburgring | 1 | #930 890 0015 | Hezemans / Ludwig / Fitzpatrick | Weisberg-Gelo-Team | DNF |
| 28.5.1978 | 1000 km Nürburgring | 3 | #930 890 0020 | Heyer / Ludwig / Hezemans | Weisberg-Gelo-Team | 1st |
| 28.5.1978 | 1000 km Nürburgring | 4 | #930 890 0022 | Wollek / Pescarolo | Porsche-Kremer-Racing | 3rd |
| 28.5.1978 | 1000 km Nürburgring | 5 | #930 890 0012 | Schornstein / "Winter" | Porsche-Kremer-Racing | DNF |
| 28.5.1978 | 1000 km Nürburgring | 8 | #930 890 0017 | Schurti / Ickx | Jägermeister-Max-Moritz Team | 2nd |
| 28.5.1978 | 1000 km Nürburgring | 9 | #911 460 9073 | Schimpf / Feitler | Jägermeister-Racing-Team | 11th |
| 28.5.1978 | 1000 km Nürburgring | 11 | #930 890 0014 | Schickentanz / Konrad / Merl | Konrad-Racing | 8th |
| 28.5.1978 | 1000 km Nürburgring | 12 | #930 770 0907 | Merl / Schreiber / Konrad | Konrad-Racing | 4th |