| Fin | St | Driver | # | Owner | Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | Jacky Ickx Jochen Mass | 1 | Martini Racing Porsche System | Porsche 935/77 005 | 173 | 5,000 | running | |
| 2 | 3 | George Follmer Brett Lunger | 16 | Vasek Polak Racing | Porsche 935 930 770 0913 | 170 | 3,000 | running | |
| 3 | 5 | Bob Hagestad Hurley Haywood | 95 | Bob Hagestad Porsche Audi | Porsche 934 930 770 0957 | 169 | 5,250 | running | |
| 4 | 10 | Johnny Rutherford Dick Barbour | 66 | Dick Barbour | Porsche 934 930 770 0959 | 166 | 3,850 | running | |
| 5 | 8 | Danny Ongais Ted Field | 0 | Ted Field | Porsche 934 930 770 0953 | 165 | 2,950 | running | |
| 6 | 6 | Claude Ballot-Léna Peter Gregg John Gunn | 59 | Brumos Racing | Porsche 934 930 770 0952 | 163 | 2,550 | running | |
| 7 | 22 | Monte Shelton Robert Frostrom | 51 | Monte's Motors | Porsche Carrera RSR 911 460 0059 | 162 | 1,400 | running | |
| 8 | 9 | Paul Miller Ludwig Heimrath | 7 | Heimrath Racing | Porsche 934/5 930 770 0958 | 160 | 1,950 | running | |
| 9 | 30 | John Wood Bob Lazier | 57 | John Wood Racing | Porsche 911 Carrera | 158 | 3,100 | running | |
| 10 | 13 | Janet Guthrie Randy Lewis | 20 | Vasek Polak Racing | Porsche 934 | 157 | 1,400 | running | |
| 11 | 25 | John Bauer Tom Spalding | 98 | John Bauer Racing | Porsche 911 | 156 | 1,900 | running | |
| 12 | 7 | Tom Frank Jim Busby | 61 | Jim Busby Racing | Porsche 935 | 156 | 400 | running | |
| 13 | 28 | Babe Headley Sam Feinstein | 78 | Babe's Garage | Chevrolet Corvette | 155 | 1,300 | running | |
| 14 | 21 | Bob Tullius Brian Fuerstenau | 44 | Group 44 Inc. | Jaguar XJS | 154 | 1,100 | running | |
| 15 | 14 | Gary Belcher Roy Woods | 2 | Vasek Polak Racing | Porsche 934 | 153 | 1,100 | running | |
| 16 | 38 | Bruce Jennings Bill Bean | 74 | Bruce Jennings | Porsche 911S | 147 | 1,100 | running | |
| 17 | 16 | Warren Agor Paul Nichter | 31 | Warren Agor | Chevrolet Monza | 145 | running | ||
| 17 | 16 | Warren Agor Paul Nichter | 31 | Warren Agor | Chevrolet Monza | 145 | 600 | running | |
| 18 | 33 | John Brandt Michael Oleyar | 93 | Little Foreign Car Shop | Chevrolet Corvette | 140 | 800 | running | |
| 19 | 24 | James Mancuso Bill Coykendall | 45 | Motion Marketing | Chevrolet Corvette Greenwood 010 | 137 | 700 | running | |
| 20 | 29 | Peter Papke Michael Callas | 79 | Michael Callas Rennsport Porsche | Porsche Carrera RSR | 136 | 200 | running | |
| 21 | 34 | Alex Davidson Kerry Hitt | 30 | Alex Davidson Racing | Chevrolet Corvette | 135 | 600 | running | |
| 22 | 27 | Bob Nagel Nick Engels | 80 | Nagel Racing | Chevrolet Corvette | 124 | 600 | running | |
| 23 | 26 | John Huber Ron Weaver | 9 | Team Apple/Monoca Huber | Chevrolet Corvette | 121 | 600 | engine | |
| 24 | 15 | Burt Greenwood Buzz Fyhrie Paul DePirro | 76 | Rick Mancuso Chevrolet Corvettes | Chevrolet Corvette Greenwood 007 | 120 | 700 | engine | |
| 25 | 39 | David Kicak Robert Young | 18 | Free Spirit Racing | Chevrolet Corvette | 120 | 600 | running | |
| 26 | 43 | Neil Kassel Rex Franklin | 96 | GTS/Kassel Auto Parts | Chevrolet Corvette | 117 | running | ||
| 27 | 36 | John Orr Bill Jobe | 92 | E. F. Miller | Chevrolet Corvette | 112 | running | ||
| 28 | 12 | Hans Joachim Stuck Benny Parsons Harald Grohs | 4 | BMW Faltz Assen | BMW 320i | 110 | overheating | ||
| 29 | 37 | Earl Hurlbut Bob Baechle | 64 | Auto Barn | Chevrolet Corvette | 98 | engine | ||
| 30 | 40 | Richard Weiss Bill Wolfe | 28 | Weiss Motor Racing | Porsche 911SC | 95 | 350 | running | |
| 31 | 4 | John Greenwood Dick Smothers | 77 | John Greenwood Racing | Chevrolet Corvette/Greenwood | 92 | 1,250 | valve | |
| 32 | 19 | Craig Carter Dave Laughlin | 56 | Carter Brothers Racing | Chevrolet Camaro | 90 | off course | ||
| 33 | 35 | Joe Calantonio Bob Scott | 83 | Bill Scott Racing | Porsche 911S | 89 | body damage | ||
| 34 | 32 | Michael Wiernicki Tom Rynone Neil Wiernicki | 90 | Rynone Industries | Chevrolet Corvette | 72 | engine | ||
| 35 | 17 | Mike Tillson Elliott Forbes-Robinson | 94 | Mike Tillson Enterprises Inc. | Porsche 934 930 670 0152 | 68 | oil leak | ||
| 36 | 31 | Hal Shaw Jr. Randolph Townsend | 13 | Hal Shaw Jr. | Porsche Carrera RSR | 59 | did not finish | ||
| 37 | 18 | Phil Currin John Paul | 38 | John Paul | Porsche Carrera RSR | 58 | suspension | ||
| 38 | 11 | Greg Pickett David Mock Tom Gloy | 6 | Pickett Racing | DeKon Monza 1010/Chevrolet | 55 | accident | ||
| 39 | 23 | Len Lacue Doug Mills | 48 | LaCue Racing | Chevrolet Camaro Z28 | 52 | engine failure | ||
| 40 | 20 | Norm Ridgely Jim Cook | 75 | Ridgely Racing | Porsche Carrera RSR | 48 | off course | ||
| 41 | 42 | David Jones Ted Sullivan | 71 | Triumph Manufacturing | Chevrolet Camaro Z28 | 40 | engine failure | ||
| 42 | 44 | Bill Schumacher Rick Hay | 15 | Iroquois Racing Associates | Chevrolet Corvette | 31 | transmission | ||
| 43 | 2 | Ronnie Peterson David Hobbs | 3 | McLaren Racing | BMW 320i Turbo 001 | 20 | accident | ||
| 44 | 41 | Brian Goellnicht Anatoly Arutunoff | 17 | Hallet Motor Racing Circuit | Lancia Stratos | 6 | throttle linkage |