1st | 6 | Donohue / Hobbs | Ferrari 512 M | Penske/White Racing | 2:31.650 | 198.661 |
2nd | 25 | Andretti / Ickx | Ferrari 312 PB | Ferrari Automobili | 2:32.470 | |
3rd | 2 | Rodriguez / Oliver | Porsche 917 K | J. W. Automotive Engineering Ltd. | 2:33.840 | |
4th | 3 | Elford / Larrousse | Porsche 917 K | Martini & Rossi Racing | 2:34.810 | |
5th | 33 | Galli / Stommelen | Alfa Romeo T33/3 | Autodelta S.p.a. | 2:34.990 | |
6th | 1 | Siffert / Bell | Porsche 917 K | J. W. Automotive Engineering Ltd. | 2:35.180 | |
7th | 22 | Revson / Savage | Ferrari 512 M | North American Racing Team | 2:35.500 | |
8th | 20 | Gregory / Young | Ferrari 512 M | Young American Racing Team | 2:37.400 | |
9th | 23 | Bucknum / Posey | Ferrari 512 S | North American Racing Team | 2:39.370 | |
10th | 34 | Vaccarella / Hezemans | Alfa Romeo T33/3 | Autodelta S.p.a. | 2:39.850 | |
11th | 32 | de Adamich / Pescarolo / Vaccarella | Alfa Romeo T33/3 | Autodelta S.p.a. | 2:40.170 | |
12th | 26 | Parsons / Weir | Ferrari 512 S | North American Racing Team | 2:43.800 | |
13th | 61 | Kleinpeter / Belcher | Lola T210 Ford | Promotional Advertising Corp. | 2:54.720 | |
14th | 11 | Yenko / DeLorenzo / Thompson | Chevrolet Corvette | Troy Promotions, Inc. | 2:56.520 | |
15th | 21 | Chinetti, Jr. / Eaton | Ferrari 312 P/71 | North American Racing Team | 2:56.800 | |
16th | 48 | Greenwood / Smothers | Chevrolet Corvette | John Greenwood | 2:57.770 | |
17th | 12 | Thompson / Mahler | Chevrolet Corvette | Troy Promotions, Inc. | 2:58.960 | |
18th | 50 | Barker / Harrington | Chevrolet Corvette | John Greenwood | 3:00.110 | |
19th | 16 | Rinzler / Baker | Chevron B16 Ford | Ring-Free Oil Racing Team | 3:02.860 | |
20th | 57 | Heinz / Johnson / Costanzo | Chevrolet Corvette | Dave Heinz Racing, Inc. | 3:03.110 | |
21st | 17 | Fraser / Reynolds / Sage / Baker | Chevron B16 Ford | Ring-Free Oil Racing Team | 3:03.220 | |
22nd | 58 | Rahal / Frank / Wise | Porsche 906 | Nationwide Food Brokers Racing Team | 3:03.790 | |
23rd | 86 | Gottlob / Lowther / *Nagel | Chevrolet Corvette | Cliff Gottlob | 3:06.100 | |
24th | 74 | Rosen / Jacobs | Porsche 906 | Dr. Mervin B. Rosen | 3:06.460 | |
25th | 71 | Gimondo / Dietrich | Chevrolet Camaro | Takondo Racing | 3:07.930 | |
26th | 56 | Greger / Weigel | Porsche 907 | Josef Greger | 3:07.970 | |
27th | 47 | Tremblay / McDill | Chevrolet Camaro | Bruce Behrens Racing | 3:08.540 | |
28th | 59 | Gregg / Haywood | Porsche 914/6 | Brumos Porsche Audi Corp. | 3:10.720 | |
29th | 72 | Mitchell / Kemp | Chevrolet Camaro | Robert R. Mitchell | 3:12.500 | |
30th | 28 | Meaney / Wright / Laucks | Porsche 914/6 | Ralph Meaney, Inc. | 3:13.810 | |
31st | 29 | Behr / Conrad / Buffum | Porsche 914/6 | Ralph Meaney, Inc. | 3:16.510 | |
32nd | 92 | Cordts / Pike | Chevrolet Camaro | B. F. Goodrich Tire Co. | 3:16.690 | |
33rd | 31 | Locke / Everett | Porsche 911 T | Locke Lake Colony & Waterville Estates | 3:16.980 | |
34th | 89 | Gafford / Smith | Chevrolet Camaro | H. Houghton Smith | 3:19.940 | |
35th | 18 | Guthrie / Smith / *Birrell | Chevron B16 Ford | Ring-Free Oil Racing Team | 3:20.480 | |
36th | 15 | Keyser / Jennings | Porsche 911 S | Toad Hall Racing | 3:20.580 | |
37th | 19 | Ciccone / Greenhalgh / Roberts | Chevrolet Camaro | Thomas T. Ciccone, Jr. | 3:21.570 | |
38th | 46 | Gray / Keller / Magnor | Ford Mustang | Sebring Racing, Inc. | 3:22.280 | |
39th | 5 | Duval / Nicholas / Bailey | Porsche 914/6 | Jacques Duval | 3:22.430 | |
40th | 14 | Canada / Christiansen | Chevrolet Camaro | Boykin Auto Repair | 3:23.500 | |
41st | 38 | Quintana / Belperche / Almeida | Shelby GT500 | John P. Belperche | 3:24.120 | |
42nd | 24 | Cluxton / Grossman | Ferrari 365 GTB/4 | North American Racing Team | 3:24.480 | |
43rd | 39 | Tisdelle / Kirill | Porsche 911 S | K&T Enterprises | 3:25.430 | |
44th | 42 | Sereix / Garcia / Noseda | Chevrolet Camaro | Garcia Racing | 3:25.650 | |
46th | 54 | Arutunoff / Pryor / Goellnicht | Abarth 2000 SP | Automobiles of Italy, Inc. | 3:25.790 | |
45th | 88 | Oliver / Maynard / Flanagan | Chevrolet Camaro | S-Car-Go-Racing | 3:25.870 | |
48th | 45 | Pettey / Dutton | Ford Mustang | Reventlow-Pettey Automobiles | 3:26.840 | |
47th | 35 | Wilson / Collins | Chevrolet Camaro | Collins-Wilson Racing Ent. | 3:27.490 | |
49th | 43 | Garcia / Gonzalez / Mastandrea | Chevrolet Chevy II | Garcia Racing | 3:27.490 | |
50th | 63 | Elliott / Gwynne | Chevrolet Camaro | Preston Hood Chevrolet | 3:28.950 | |
51st | 60 | Walker / Springer | Porsche 911 S | Wheel Sport, Ent. | 3:29.280 | |
52nd | 66 | Small / Fordyce / *Lipke | Chevrolet Camaro | Performance Automobile | 3:30.080 | |
53rd | 51 | Gammon / Donley / *Garza | MGB | Waldron Motors Racing Team | 3:30.110 | |
54th | 40 | Hotchkis / Kirby | Porsche 911 S | Bozzani Porsche, Inc. | 3:31.240 | |
55th | 52 | Scott / Lanier / Houser | MGB | Waldron Motors Racing Team | 3:31.350 | |
56th | 81 | Walle / Davey / Reddy | Porsche 911 S | Ray Walle Ent. Inc. | 3:32.430 | |
57th | 84 | Goldleaf / Taylor / Wheat | Alfa Romeo GTV | Del Taylor | 3:32.510 | |