| 5.2.1978 | 24 h Daytona | 0 | #930 890 0019 | Ongais / Field / Minter | Interscope Racing | 56th |
| 5.2.1978 | 24 h Daytona | 6 | #930 890 0033 | Barbour / Schurti / Rutherford | Dick Barbour Performance | 2nd |
| 5.2.1978 | 24 h Daytona | 12 | #930 890 0012 | Wollek / Pescarolo / Jaunet | Porsche Kremer Racing | 57th |
| 5.2.1978 | 24 h Daytona | 99 | #930 890 0011 | Stommelen / Hezemans / Gregg | JMS Brumos Porsche | 1st |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 2 | #930 890 0013 | Bob Wollek | Vaillant Kremer Team | 2nd |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 3 | #930 890 0012 | Dieter Schornstein | Porsche Kremer Racing | 8th |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 5 | #930 890 0017 | Manfred Schurti | Jägermeister Max Moritz Team | 11th |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 6 | #930 890 0015 | Toine Hezemans | Weisberg Gelo Team | 1st |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 7 | #930 890 0016 | Reinhold Jöst | Liqui Moly équipe | 6th |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 8 | #930 890 0011 | John Fitzpatrick | Weisberg Gelo Team | 3rd |
| 12.3.1978 | DRM Zolder Bergischer Löwe | 10 | #930 890 0014 | Franz Konrad | Konrad Racing | 12th |
| 18.3.1978 | 12 h Sebring | 6 | #930 890 0033 | Barbour / Stommelen / Schurti | Dick Barbour Performance | 57th |
| 18.3.1978 | 12 h Sebring | 94 | #930 890 0023 | Whittington / Whittington | Whittington Bros. | DNA |
| 19.3.1978 | 6 h Mugello | 9 | #930 890 0022 | Wollek / Pescarolo | Porsche Kremer Racing | DNF |
| 19.3.1978 | 6 h Mugello | 11 | #930 890 0011 | Fitzpatrick / Ludwig / Hezemans | Gelo Racing Team | 9th |
| 19.3.1978 | 6 h Mugello | 12 | #930 890 0015 | Hezemans / Heyer / Fitzpatrick | Gelo Racing Team | 1st |
| 19.3.1978 | 6 h Mugello | 15 | #930 890 0014 | Konrad / Jöst / Merl | Konrad Racing | 2nd |
| 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 | 5 | #930 890 0017 | Manfred Schurti | Jägermeister Max Moritz Team | DNF |
| 2.4.1978 | 6 h Talladega | 6 | #930 890 0033 | Barbour / Rutherford | Dick Barbour Racing | 3rd |
| 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 | 6 h Talladega | 94 | #930 890 0023 | Whittington / Whittington | Whittington Brothers Racing | 2nd |
| 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 | 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 | 100 mile Road Atlanta | 94 | #930 890 0023 | Don Whittington | Whittington Bros. | 7th |
| 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 | 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 | 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 | 16 | #930 890 0025 | George Follmer | Vasek Polak | 1st |
| 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 |
| 7.5.1978 | 100 mile Hallett | 00 | #930 890 0019 | Ted Field | Interscope Racing | 17th |
| 7.5.1978 | 100 mile Hallett | 59 | #930 890 0018 | Peter Gregg | Brumos Porsche | 13th |
| 7.5.1978 | 100 mile Hallett | 94 | #930 890 0023 | Don Whittington | Whittington Brothers Racing | 12th |
| 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 | 11 | #930 890 0014 | Konrad / Merl | Konrad Racing | 6th |
| 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 | 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 | 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 |
| 28.5.1978 | 1000 km Nürburgring | 1 | #930 890 0015 | Hezemans / Ludwig / Fitzpatrick | Weisberg-Gelo-Team | DNF |
| 28.5.1978 | 1000 km Nürburgring | 2 | #930 890 0011 | Fitzpatrick / Heyer / Hezemans | 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 | 7 | #930 890 0016 | Jöst / Barth | Liqui Moly Equipe | 5th |
| 28.5.1978 | 1000 km Nürburgring | 8 | #930 890 0017 | Schurti / Ickx | Jägermeister-Max-Moritz Team | 2nd |
| 28.5.1978 | 1000 km Nürburgring | 11 | #930 890 0014 | Schickentanz / Konrad / Merl | Konrad-Racing | 8th |
| 29.5.1978 | 100 mile Lime Rock | 00 | #930 890 0019 | Ted Field | Interscope Racing | 6th |
| 29.5.1978 | 100 mile Lime Rock | 59 | #930 890 0018 | Peter Gregg | Brumos Porsche | 1st |
| 29.5.1978 | 100 mile Lime Rock | 94 | #930 890 0023 | Bill Whittington | Whittington Brothers Racing | 2nd |
| 11.6.1978 | 24 h Le Mans | 42 | | Konrad / Merl | Konrad Racing | DNA |
| 11.6.1978 | 24 h Le Mans | 44 | #930 890 0012 | Busby / Knoop / Cord | Porsche Kremer Racing | 6th |
| 11.6.1978 | 24 h Le Mans | 46 | #930 890 0022 | Raymond / "Steve" / Franey | Porsche Kremer Racing | DNF |
| 11.6.1978 | 24 h Le Mans | 47 | #930 890 0011 | Fitzpatrick / Hezemans | Weisberg Gelo Team | DNF |
| 11.6.1978 | 24 h Le Mans | 90 | #930 890 0024 | Redman / Paul / Barbour | Dick Barbour Racing | 5th |
| 11.6.1978 | 24 h Le Mans | 91 | #930 890 0033 | Garretson / Akin / Earle | Dick Barbour Racing | DNF |
| 11.6.1978 | 24 h Le Mans | 94 | #930 890 0016 | Whittington / Whittington / Konrad | Whittington Brother Inc. Racing | DNF |
| 18.6.1978 | DRM Mainz-Finthen | 2 | #930 890 0013 | Bob Wollek | Vaillant-Kremer-Team | 1st |
| 18.6.1978 | DRM Mainz-Finthen | 3 | #930 890 0012 | Dieter Schornstein | Porsche-Kremer-Racing-Team | 7th |
| 18.6.1978 | DRM Mainz-Finthen | 5 | #930 890 0017 | Manfred Schurti | Jägermeister-Max-Moritz-Team | 4th |
| 18.6.1978 | DRM Mainz-Finthen | 6 | #930 890 0015 | Toine Hezemans | Weisberg-Gelo-Team | 5th |
| 18.6.1978 | DRM Mainz-Finthen | 8 | #930 890 0011 | John Fitzpatrick | Weisberg-Gelo-Team | 2nd |
| 18.6.1978 | DRM Mainz-Finthen | 9 | #930 890 0020 | Klaus Ludwig | Weisberg-Gelo-Team | 3rd |
| 18.6.1978 | DRM Mainz-Finthen | 10 | #930 890 0014 | Franz Konrad | Konrad-Racing | 6th |
| 18.6.1978 | 100 mile Brainerd | 59 | #930 890 0018 | Peter Gregg | Brumos Porsche | 1st |
| 18.6.1978 | 100 mile Brainerd | 94 | #930 890 0023 | Don Whittington | Whittington Brothers Racing | 3rd |
| 25.6.1978 | 6 h Misano | 6 | #930 890 0020 | Hezemans / Ludwig / Fitzpatrick | Gelo Racing Team | DNF |
| 25.6.1978 | 6 h Misano | 7 | #930 890 0022 | Wollek / Pescarolo | Porsche Kremer Racing | 1st |
| 25.6.1978 | 6 h Misano | 8 | #930 890 0011 | Fitzpatrick / Heyer | Gelo Racing Team | DNF |
| 25.6.1978 | 6 h Misano | 12 | #930 890 0014 | Konrad / Merl | Konrad Racing | 3rd |
| 2.7.1978 | DRM Zandvoort | 2 | #930 890 0013 | Bob Wollek | Vaillant Kremer Team | 9th |
| 2.7.1978 | DRM Zandvoort | 6 | #930 890 0015 | Toine Hezemans | Weisberg-Gelo-Team | 2nd |
| 2.7.1978 | DRM Zandvoort | 8 | #930 890 0011 | John Fitzpatrick | Weisberg-Gelo-Team | 1st |