| Fin | St | Driver | # | Owner | Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | Don Whittington Klaus Ludwig Bill Whittington | 94 | Whittington Brothers | Porsche 935 | 175 | 5,000 | running | 121 |
| 2 | 1 | Rolf Stommelen Dick Barbour Paul Newman | 70 | Dick Barbour Performance | Porsche 935 009 00030 | 171 | 3,000 | running | 29 |
| 3 | 9 | Rob McFarlin Roy Woods Bob Akin | 71 | Dick Barbour Performance | Porsche 935 009 00016 | 170 | 4,800 | running | 0 |
| 4 | 4 | Elliott Forbes-Robinson Randolph Townsend Brett Lunger | 20 | Andial Porsche Service | Porsche 935 930 770 0905 | 169 | 1,600 | running | 0 |
| 5 | 10 | Charles Mendez Paul Miller | 6 | CMR Inc. | Porsche 935 930 770 0957 | 167 | 1,200 | lost wheel | 0 |
| 6 | 7 | John Paul Al Holbert | 18 | J.L.P. Racing Inc. | Porsche 935 930 890 0037 | 167 | 3,000 | running | 1 |
| 7 | 20 | Bob Tullius Brian Fuerstenau | 44 | JRT/Quaker State | Triumph TR8 | 162 | 3,900 | running | 0 |
| 8 | 8 | Bill Whittington Brian Redman Johnny Rutherford | 95 | Whittington Brothers | Porsche 935/79 | 161 | 2,200 | running | 9 |
| 9 | 16 | Skeeter McKitterick Buzz Marcus Bob Garretson | 72 | Dick Barbour Performance | Porsche 935 930 770 0910 | 161 | 1,600 | running | 0 |
| 10 | 18 | Kenper Miller Dave Cowart | 5 | K.W.M. Racing | BMW 3.5 CSL | 161 | 1,400 | running | 0 |
| 11 | 24 | Bonky Fernandez Tato Ferrer | 38 | Boricua Motors Corp. | Porsche Carrera RSR 911 460 9113 | 160 | 1,100 | running | 0 |
| 12 | 25 | Roger Schramm Werner Frank | 97 | Framm Promotions | Porsche Carrera RSR | 158 | 900 | running | 0 |
| 13 | 19 | Tuck Thomas Norm Ridgely Robert Kirby | 66 | Stanton/Barbour | Porsche 935 930 770 0959 | 155 | 700 | running | 0 |
| 14 | 44 | Sam Feinstein Michael Oleyar Nick Engels | 92 | E. F. Miller & Co. | Chevrolet Corvette 454 | 149 | 1,800 | running | 0 |
| 15 | 23 | Frank Joyce Tom Frank | 43 | Phantom Racing | Chevrolet Corvette 454 | 144 | 1,600 | running | 0 |
| 16 | 40 | Daniel Muniz John Wood Carl Shafer Mario Gomez | 21 | Gordon Oftedahl | Chevrolet Camaro | 144 | 1,200 | running | 0 |
| 17 | 26 | John Huber Daniel Muniz Miguel Muniz | 10 | Gordon Oftedahl | Chevrolet Camaro | 142 | 1,300 | running | 0 |
| 18 | 41 | Bruce Jennings Bob Beasley Bill Bean | 77 | Bruce Jennings | Porsche 911S | 142 | 900 | running | 0 |
| 19 | 39 | Hoyt Overbagh Billy Hagan | 29 | Stratagraph Inc. | Rickets Monza 001/Chevrolet | 140 | 700 | running | 0 |
| 20 | 36 | Neil Kassel Tom Roberts | 16 | Tom's Mechanical Emporium | Chevrolet Camaro 350 | 136 | 600 | running | 0 |
| 21 | 38 | Bill Maier Art Siri Jr. Ed Hinchcliff | 25 | Maier Racing Inc. | Ford Mustang Mach 1 302 | 126 | 550 | running | 0 |
| 22 | 21 | Tom Rynone Neil Wiernicki Michael Wiernicki | 90 | Rynone Industries | Chevrolet Corvette 427 | 121 | 1,000 | running | 0 |
| 23 | 17 | Hal Shaw Jr. Gary Belcher | 13 | Hal Shaw Racing | Porsche 935 930 670 0180 | 120 | 550 | pit fire | 0 |
| 24 | 11 | Ludwig Heimrath Carlos Moran | 7 | Heimrath Racing | Porsche 935 930 770 0958 | 117 | 700 | engine | 0 |
| 25 | 14 | Maurice Carter Tony de Lorenzo | 80 | Maurice C. Carter | Chevrolet Camaro | 115 | 450 | off course | 0 |
| 26 | 27 | Doug Lutz Jon McKnight | 47 | Doug Lutz | Porsche Carrera RSR | 111 | 250 | ignition | 0 |
| 27 | 35 | Paul Schulte John Cleveland | 37 | Kassel Auto Parts | Chevrolet Corvette 350 | 105 | 250 | running | 0 |
| 28 | 32 | Robert Schuler David Schuler | 52 | Fred Schuler Inc. | Datsun 280Z | 98 | 250 | running | 0 |
| 29 | 13 | Jim Busby Manfred Winkelhock David Hobbs | 3 | BMW of North America and Munich | BMW M1 WBS59910004301065 | 96 | 0 | off course | 0 |
| 30 | 42 | Alan Howes David Sturdevant | 55 | Intrepid Design Inc. | Porsche Carrera | 78 | 250 | oil pressure | 0 |
| 31 | 3 | Peter Gregg Hurley Haywood Bruce Leven | 85 | Bruce Leven | Porsche 935 930 770 0909 | 72 | 850 | engine | 7 |
| 32 | 6 | Ted Field Danny Ongais | 0 | Ted Field | Porsche 935/79 930 990 0029 | 48 | 0 | accident | 3 |
| 33 | 33 | Bob Zulkowski Bernie Storc | 23 | Metal Craft Racing | Porsche 914/6 473 29 24107 | 48 | 250 | unknown | 0 |
| 34 | 30 | Bob Fryer Ed Lowther | 30 | University of Pittsburgh | AMC Javelin | 48 | 250 | accident | 0 |
| 35 | 15 | Neil Shelton Monte Shelton | 57 | Monte's Motor Co. | Porsche 935 930 770 0951 | 48 | 250 | accident | 0 |
| 36 | 43 | Bob Baechle Craig Carter | 64 | Endurance Racing Enterprises | Chevrolet Corvette 427 | 25 | 250 | overheating | 0 |
| 37 | 31 | Al Salerno Bob Lapane | 65 | Alan F. Salerno | Chevrolet Corvette 454 | 25 | 0 | oil leak | 0 |
| 38 | 34 | Michael Oleyar Nick Engels | 93 | E. F. Miller & Co. | Chevrolet Corvette Greenwood 011 | 18 | 0 | off course | 0 |
| 39 | 37 | Thomas Aquilante Dave Wolpert Wade White | 51 | Thomas Aquilante | Chevrolet Corvette 350 | 15 | 0 | engine | 0 |
| 40 | 22 | Daniel Muniz Carl Shafer | 11 | Gordon Oftedahl | Chevrolet Camaro | 11 | 0 | fire | 0 |
| 41 | 12 | Chris Cord Jim Adams | 19 | Chris Cord Racing | DeKon Monza 1011/Chevrolet | 10 | 0 | accident | 0 |
| 42 | 5 | Rick Mears Preston Henn Peter Gregg | 09 | Bruce Leven | Porsche 935/77A 930 890 0021 | 7 | 0 | fire | 0 |
| 43 | 29 | James Mancuso David Kicak | 15 | Motion Merchants | Chevrolet Corvette Greenwood 010 | 3 | 0 | off course | 0 |
| 44 | 28 | Lawrence Green John Bauer | 98 | Larry Green/Bauer Racing | Porsche Carrera 911 460 0111 | 0 | 0 | did not start | 0 |
| Danny Ongais Ted Field | 00 | Ted Field | Porsche 935/77A 930 890 0019 | 0 | practiced car | 0 |