| 1st | 25 | Hans-Joachim Stuck / Dieter Quester | BMW 3.0 CSL | BMW Motorsport |
| 2nd | 24 | Sam Posey / Brian Redman | BMW 3.0 CSL | BMW Motorsport |
| 3rd | 3 | Harry Theodoracopulos / Allan Moffat | Ford Capri RS | Ippocampos Racing |
| 4th | 59 | Peter Gregg / Hurley Haywood | Porsche Carrera RSR | Brumos Porsche |
| 5th | 95 | Bob Hagestad / Al Holbert | Porsche 911 Carrera RSR | Bob Hagestad |
| 6th | 30 | George Dyer / Jacques Bienvenue | Porsche 911 Carrera RSR 3.0 | George Dyer |
| 7th | 23 | Charlie Kemp / Carson Baird | Porsche 911 Carrera RSR | Armorall Racing Team |
| 8th | 61 | Jim Busby / Mike Hiss | Porsche Carrera RSR | Beverly Porsche Audi/Mitcom Inc. |
| 8th | 81 | Elliot Forbes-Robinson / Milt Minter | Porsche Carrera RSR | Pharr West |
| 9th | 1 | Michael Keyser / Billy Sprowls | Porsche 911 Carrera RSR 3.0 | Toad Hall/ASCA |
| 10th | 43 | John O'Steen / Dave Helmick | Porsche Carrera RSR | - |
| 11th | 9 | Juan Carlos Bolanos / Michel Jourdain | Porsche Carrera RSR | Toad Hall/ASCA |
| 13th | 5 | Bob Harmon / Jon Woodner | Porsche Carrera RSR | - |
| 14th | 8 | Bert Ohlander / Cuffy Crabbe / Jim Cook | Porsche 911 | Terry Glass |
| 15th | 33 | Bob Sharp / Walt Maas | Datsun 240Z | Bob Sharp Racing |
| 16th | 47 | Brad Frisselle / John Morton | Datsun 240Z | Transcendental Racing |
| 17th | 79 | Michael Callas / Adrian Gang | Porsche 911 Carrera RSR | - |
| 18th | 27 | Rich Sloma / Bob Fisher | Chevrolet Corvette | - |
| 19th | 4 | John Morton / Jeff Kline / Chris Cord / Salvatore Tomasello | Ferrari 365 GTB/4 | Modena Sports Cars |
| 20th | 38 | John Bauer / Bill Baker | Porsche 911 | - |
| 21st | 11 | Andy Porterfield / Stan Allen | Chevrolet Corvette | - |
| 22nd | 86 | Jim Borsos / Dennis Aase / Howard Meister | Porsche 911 S | - |
| 23rd | 39 | Wiley Doran / Bill Arnold | Chevrolet Corvette | - |
| 24th | 16 | Bob Eckhardt / Doc Alexander | Chevrolet Camaro | - |
| 26th | 37 | Peter Weinhold / Ross Lowande | Chevrolet Camaro | - |
| 27th | 80 | Bill Polich / Marco Basurto | Porsche 914/6 | Montgomery Real Estate |
| 28th | 77 | Paul Law / Bill Krueger | Shelby Mustang | - |
| 29th | 15 | Harry Kauffman / Roger Kraus | Chevrolet Corvette | Harry Kauffman |
| 30th | 35 | Carl Fredricks / David Day | BMW 2000 TI | - |
| 31st | 41 | Bert Laakmann / Charly Godecke | Porsche 911 | - |
| 32nd | 57 | Bob McGinty / Ray Hutson | Chevrolet Camaro | - |
| 33rd | 96 | Rich Mandella / John Thomas | Porsche 914/6 | - |
| 34th | 10 | Alf Gebhardt / Bruno Beilcke | BMW 2002 | - |
| 35th | 78 | James Newman / Joe Cannone | Alfa Romeo GT | GTA Sports Cars |
| 36th | 36 | John Samson / Bill Kohl | Alfa Romeo GTV | Samero |
| 37th | 31 | Pete Brallier / Dave Mock / Frank Fahey | Chevrolet Corvette | - |
| 38th | 50 | Bill Freeman / Rodger Ward | Porsche 911 | Beverly Porsche Audi/Mitcom Inc. |
| 39th | 51 | Robert Kirby / Len Jones | Porsche 914/6 | Max-Dial |
| 40th | 00 | Don Lindley / Gary Wilson | Porsche 911 S | - |
| 41st | 69 | Mark Pettyjohn / Mike Voelker | Chevrolet Corvette | - |