| 22.1.1981 | Australian SCC Sandown | | #930 890 0020 | John Latham | | 1st |
| 1.2.1981 | 24 h Daytona | 0 | #000 00010 | Field / Minter / Ongais | Interscope Racing | 39th |
| 1.2.1981 | 24 h Daytona | 00 | | Field / Ongais / Minter | Interscope Racing | DNS |
| 1.2.1981 | 24 h Daytona | 07 | #930 770 0958 | Heimrath / Heimrath, Jr. | Heimrath Racing | 14th |
| 1.2.1981 | 24 h Daytona | 09 | #930 890 0021 | Henn / Bondurant | Thunderbird Swap Shop | 64th |
| 1.2.1981 | 24 h Daytona | 1 | #000 00011 | Fitzpatrick / Busby / Wollek | John Fitzpatrick Racing | 48th |
| 1.2.1981 | 24 h Daytona | 5 | #009 00016 | Akin / Siebert / Bell | Bob Akin Motor Racing | 2nd |
| 1.2.1981 | 24 h Daytona | 6 | #000 00012 | Merl / Mass | Joest Racing | 59th |
| 1.2.1981 | 24 h Daytona | 8 | #JLP-3 | Paul, Jr. / Smiley | JLP Racing | DNA |
| 1.2.1981 | 24 h Daytona | 9 | #009 00030 | Garretson / Rahal / Redman | Garretson Racing/Style Auto | 1st |
| 1.2.1981 | 24 h Daytona | 18 | #009 00043 | Paul / Paul, Jr. | JLP Racing | 60th |
| 1.2.1981 | 24 h Daytona | 30 | #930 890 0014 | Moretti / Mendez / DeNarvaez | Momo/Penthouse | 34th |
| 1.2.1981 | 24 h Daytona | 37 | #930 990 0032 | Romero / Gonzalez / Mendez | Pepe Romero | 52nd |
| 1.2.1981 | 24 h Daytona | 51 | #930 890 0013 | Stommelen / Grohs / Meister | Andial Racing/Meister Homes | 24th |
| 1.2.1981 | 24 h Daytona | 84 | #930 670 0171 | "Jamsal" / Barrientos / Gonzalez | Scorpio Racing Team | 8th |
| 1.2.1981 | 24 h Daytona | 85 | #930 890 0018? | Leven / Haywood / Barth | Bayside Disposal Racing | DNA |
| 1.2.1981 | 24 h Daytona | 86 | #000 00024 | Haywood / Barth / Leven | Bayside Disposal/Brumos Racing | 42nd |
| 1.2.1981 | 24 h Daytona | 90 | #930 770 0911 (009 0005) | Woods / Kent-Cooke / Redman | Woods-Cooke Racing/Style Auto | DNA |
| 1.2.1981 | 24 h Daytona | 93 | | Whittington / Whittington / Whittington | Whittington Brothers Racing | DNA |
| 1.2.1981 | 24 h Daytona | 94 | #930 670 0152 | Whittington / Whittington / Whittington | Whittington Brothers | 57th |
| 21.3.1981 | 12 h Sebring | 0 | #000 00010 | Field / Ongais | Interscope Racing | 44th |
| 21.3.1981 | 12 h Sebring | 00 | | Ongais / Field | Interscope Racing | DNS |
| 21.3.1981 | 12 h Sebring | 07 | #930 770 0958 | Heimrath / Heimrath, Jr. | Heimrath Porsche | 62nd |
| 21.3.1981 | 12 h Sebring | 09 | #930 890 0021 | Henn / Gunn / Belcher | T-Bird Swap Shop | 48th |
| 21.3.1981 | 12 h Sebring | 1 | #000 00011 | Fitzpatrick / Busby | John Fitzpatrick Racing | 41st |
| 21.3.1981 | 12 h Sebring | 2 | #DMV 470 12CA=>930 770 0960° | Hinze / Minter / Whittington | Marty Hinze Racing | 3rd |
| 21.3.1981 | 12 h Sebring | 3 | #930 890 0013 | Meister / Stommelen / Grohs | Andial/Meister Racing | 4th |
| 21.3.1981 | 12 h Sebring | 5 | #009 00016 | Akin / Bell / Siebert | Bob Akin Motor Racing | 60th |
| 21.3.1981 | 12 h Sebring | 8 | #JLP-3 | Paul / Paul, Jr. | JLP Racing | 66th |
| 21.3.1981 | 12 h Sebring | 9 | #009 00030 | Garretson / Rahal / Redman | Cooke Woods Racing/Garretson Enterprises | 17th |
| 21.3.1981 | 12 h Sebring | 17 | #930 990 0032 | Romero / Mendez | Pepe Romero | DNA |
| 21.3.1981 | 12 h Sebring | 18 | | Werner Frank | JLP Racing | DNS |
| 21.3.1981 | 12 h Sebring | 30 | #930 890 0014 | Moretti / Mendez / DeNarvaez | Momo/Penthouse | 6th |
| 21.3.1981 | 12 h Sebring | 84 | #930 670 0171 | "Jamsal" / Barrientos / Valiente | Scorpio Racing | 26th |
| 21.3.1981 | 12 h Sebring | 86 | #000 00024 | Haywood / Holbert / Leven | Bayside Disposal Racing | 1st |
| 21.3.1981 | 12 h Sebring | 90 | #930 770 0911 (009 0005) | Woods / Kent-Cooke / McKitterick | Cooke Woods Racing/Garretson Enterprises | 2nd |
| 21.3.1981 | 12 h Sebring | 94 | #930 670 0152 | Whittington / Whittington / Whittington | Whittington Bros | 65th |
| 21.3.1981 | 12 h Sebring | 95 | #930 890 0023 | Whittington / Whittington / Whittington | Whittington Bros | DNA |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 52 | #000 00013 | Bob Wollek | Jägermeister Kremer Racing | 2nd |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 53 | #000 00016 | Dieter Schornstein | Vegla Racing Team | 12th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 54 | #009 0003 | Jürgen Lässig | Wera-Meissberg-Team | 5th |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 66 | #JR-001 | Jochen Mass | Joest Racing | 3rd |
| 22.3.1981 | DRM Zolder Bergischer Löwe | 67 | #009 0001 | Volkert Merl | Spotoil Racing | 6th |
| 22.3.1981 | CI Gr.2/4/5 Vallelunga | | #930 890 0017 | "Victor" | "Victor" | 1st |
| 22.3.1981 | Hockenheim | | #000 00026 | Antoine Salamin | | 1st |
| 29.3.1981 | DRM Nürburgring 300 | 52 | #000 00013 | Bob Wollek | Jägermeister Kremer Team | 1st |
| 1981 | Estoril | 48 | | Joaquim Moutinho | | 10th |
| 1981 | Vila do Conde | 87 | | Ruffino Fontes | Maconde | 2nd |
| 1981 | Costa Verde | 87 | #911 460 9095 | Robert Giannone | | 1st |
| 1981 | Vila do Conde | 88 | #911 460 9095 | Robert Giannone | Robert Giannone | 1st |
| 1981 | Costa Verde | 88 | | Jorge Petiz | | 3rd |
| 1981 | Vila do Conde | 89 | | Jorge Petiz | Venancio-Ponto Verde | 3rd |
| 1981 | Costa Verde | 89 | | Joaquim Moutinho | | 2nd |
| 1981 | Estoril | 135 | | Ruffino Fontes | Maconde | 1st |
| 1981 | Estoril | | #911 460 9095 | Robert Giannone | Robert Giannone | 2nd |