| 1 | 2 | 1. S3.0 | SpA Ferrari SEFAC | Mario Andretti · Jacky Ickx | Ferrari 312PB | — | 259 | WSPR historical record |
| 2 | 3 | 2. S3.0 | SpA Ferrari SEFAC | Ronnie Peterson · Tim Schenken | Ferrari 312PB | — | 257 | WSPR historical record |
| 3 | 33 | 3. S3.0 | US Autodelta SpA | Nino Vaccarella · Toine Hezemans | Alfa Romeo 33TT3 ASK | — | 2 | WSPR historical record |
| 4 | 57 | 1. GT+2.5 | Dana English | Dave Heinz · Robert R. Johnson | Chevrolet Corvette | — | 221 | WSPR historical record |
| 5 | 59 | 1. GT2.5 | Brumos Porsche | Peter Gregg · Hurley Haywood | Porsche 911S | — | 215 | WSPR historical record |
| 6 | 12 | 4. S3.0 | Ecurie Bonnier | Gérard Larrousse · Jo Bonnier · Reine Wisell | Lola T280 Ford | — | 213 | WSPR historical record |
| 7 | 39 | 5. S3.0 | Vasek Polak | Roman Pechmann · Rudy Bartling · Milt Minter | Porsche 910 | — | 213 | WSPR historical record |
| 8 | 22 | 2. GT+2.5 | North American Racing Team | Luigi Chinetti, Jr. · Bob Grossman | Ferrari 365 GTB/4 | — | 210 | WSPR historical record |
| 9 | 78 | GT2.5 50 | niel Muniz 20 | Daniel Muniz · José Luis · Ruben Novoa | Porsche 914/6 GT ASK US Da | — | 7 | WSPR historical record |
| 10 | 17 | 1. T5.0 | Takondo Racing | Vince Gimondo · Billy Dingman | Chevrolet Camaro | — | 205 | WSPR historical record |
| 11 | 77 | 3. GT2.5 | Bruce Jennings | Bruce Jennings · Bob Beasley | Porsche 911S | — | 202 | WSPR historical record |
| 12 | 28 | 4. GT2.5 | Kremer Racing | Erwin Kremer · Günther Huber · Juan Carlos Bolanos | Porsche 911S | — | 201 | WSPR historical record |
| 13 | 21 | 3. GT+2.5 | North American Racing Team | Tony Adamowicz · Sam Posey | Ferrari 365 GTB/4 | — | 199 | WSPR historical record |
| 14 | 41 | 5. GT2.5 | Kirill Racing | Peter Kirill · Russ Norburn | Porsche 911S | — | 196 | WSPR historical record |
| 15 | 27 | 6. GT2.5 | Bozzani Porsche-Audi | Robert Kirby · John Hotchkis · DNS - Bill Cuddy | Porsche 914/6 GT | — | 189 | WSPR historical record |
| 16 | 69 | 7. GT2.5 | Holbert's Porsche-Audi | Dieter Oest · Mike Tillson · Al Holbert | Porsche 911T | — | 186 | WSPR historical record |
| 17 | 47 | 4. GT+2.5 | Sebring Racing | Bob Gray · Terry Keller | Chevrolet Corvette | — | 181 | WSPR historical record |
| 18 | 38 | S2.0 | Hobby Car Enterprises | Bob Fisher · Bruce Ponder | Chevron B16 Ford | — | 176 | WSPR historical record |
| 19 | 18 | 5. GT+2.5 | Ring Free Oil Team | Harry Ingle · Charles Reynolds | Ferrari 365 GTB/4 | — | 175 | WSPR historical record |
| 20 | 25 | S2.0 | Team Fred Opert | Nick Craw · Bill Barber | Chevron B19 Ford | — | 173 | WSPR historical record |
| 21 | 74 | S2.0 | Carousel Porsche-Audi | Merv Rosen · Jerry Schaub | Porsche 906 | — | 172 | WSPR historical record |
| 22 | 56 | S2.0 | Promotional Advertising Cor | Tom Waugh · Bob Beatty | Lola T212 Ford | — | 167 | WSPR historical record |
| 23 | 94 | 2. T5.0 | Bolus & Snopes Ltd. | Bob Mitchell · Bob Christiansen | Chevrolet Camaro | — | 166 | WSPR historical record |
| 24 | 50 | 6. GT+2.5 | John Greenwood Racing | Don Yenko · John Cordts | Chevrolet Corvette | — | 163 | WSPR historical record |
| 25 | 58 | 8. GT2.5 | Brumos Porsche-Audi | Hector Rebaque · Guillermo Rojas | Porsche 914/6 | — | 152 | WSPR historical record |
| 26 | 10 | 3. T5.0 | C. C. Canada Lumber Co. Inc | John Tremblay · David Ellis-Brown | Chevrolet Camaro | — | 146 | WSPR historical record |
| 27 | 24 | T2.5 | Libra International Racing | John Buffum · John Fitzpatrick | Ford Escort RS1600 | — | 97 | WSPR historical record |
| 28 | 68 | 9. GT2.5 | H & S Imports Racing | Robert Stoddard · Joe Hines, Jr. · Frank Harmstad | Porsche 914/6 GT | — | 146 | WSPR historical record |
| 29 | 73 | GT2.5 | Ross Racing Ltd | Craig Ross · Jacques Groleau | Datsun 240Z | — | 121 | WSPR historical record |
| 30 | 4 | S3.0 | SpA Ferrari SEFAC | Clay Regazzoni · Brian Redman | Ferrari 312PB | — | 215 | WSPR historical record |
| 31 | 48 | GT+2.5 | John Greenwood Racing | John Greenwood · Dick Smothers | Chevrolet Corvette | — | 179 | WSPR historical record |
| 32 | 9 | T5.0 | Endurance Promotions Inc. | Michael Summers · Bob McClure | Chevrolet Camaro | — | 145 | WSPR historical record |
| 33 | 44 | T5.0 | Larrauri Racing | Manuel Garcia · Robert Cao | Chevrolet Nova | — | 137 | WSPR historical record |
| 34 | 46 | T5.0 | Sebring Racing | Neil Potter · Oran Ansley · Bill Hood | Ford Mustang | — | 130 | WSPR historical record |
| 35 | 32 | S3.0 6 | todelta SpA 12 | Vic Elford · Helmut Marko | Alfa Romeo 33TT3 ASK US Au | — | 8 | WSPR historical record |
| 36 | 31 | S3.0 | S Autodelta SpA | Rolf Stommelen · Peter Revson · Andrea de Adamich | Alfa Romeo 33TT3 ASK U | — | 11 | WSPR historical record |
| 37 | 11 | T5.0 | Troy Promotions Inc. | Tony DeLorenzo · Jerry Thompson | Ford Mustang | — | 116 | WSPR historical record |
| 38 | 16 | GT2.5 | Toad Hall Racing | Michael Keyser · Jürgen Barth | Porsche 911S | — | 102 | WSPR historical record |
| 39 | 42 | T5.0 | Garcia Racing | Ralph Noseda · Javier Garcia · Mark Livingston | Chevrolet Camaro | — | 92 | WSPR historical record |
| 40 | 89 | T5.0 | Rinzler Autoracing Inc. | Houghton Smith · Bert Gafford | Chevrolet Camaro | — | 91 | WSPR historical record |
| 41 | 52 | S2.0 | Promotional Advertising Cor | Hugh Kleinpeter · Tony Belcher | Chevron B21 | — | 85 | WSPR historical record |
| 42 | 37 | T5.0 | Gary Belcher | Gary Belcher · Jef Stevens | Chevrolet Camaro | — | 84 | WSPR historical record |
| 43 | 26 | S2.0 | Team Fred Opert | Rodolfo Junco · Fred van Beuren, Jr. | Chevron B19 Ford | — | 76 | WSPR historical record |
| 44 | 35 | T5.0 | Dr. V. P. Collins | Vincent P. Collins · Roberto Gonzalez · Jack Beall | Chevrolet Camaro | — | 76 | WSPR historical record |
| 45 | 76 | GT2.5 | Silverstone Racing Team | George Stone · Russ Poole | Porsche 911T | — | 64 | WSPR historical record |
| 46 | 54 | S2.0 | Automobile International In | Anatoly Arutunoff · Brian Goellnicht | Abarth 2000SP | — | 57 | WSPR historical record |
| 47 | 1 | GT+2.5 | Kirk F. White | David Hobbs · Skip Scott | Ferrari 365 GTB/4 | — | 53 | WSPR historical record |
| 48 | 19 | GT2.5 49 | ve McClain 5 | David McClain · Dave White | Porsche 914/6 GT ASK US Da | — | 1 | WSPR historical record |
| 49 | 80 | T5.0 | Preston Hood Chevrolet | John Elliott · Bill McDill | Chevrolet Camaro | — | 50 | WSPR historical record |
| 50 | 7 | S3.0 | Gulf Racing Research | Derek Bell · Gijs van Lennep | Mirage M6 Ford | — | 48 | WSPR historical record |
| 51 | 34 | S3.0 | US Autodelta SpA | Andrea de Adamich · Nanni Galli · DNS - Toine Hezemans · DNS - Nino Vaccarella | Alfa Romeo 33TT3 ASK | — | | WSPR historical record |
| 52 | 30 | GT+2.5 | Florida Tire Co. | Manuel Quintana · John Belperche | Shelby GT350 | — | 33 | WSPR historical record |
| 53 | 8 | T5.0 | Automotive Engineering Ente | Tom Nehl · Jim Fitzgerald | Chevrolet Camaro | — | 31 | WSPR historical record |
| 54 | 61 | GT2.5 | James N. Locke | Jim Locke · Bob Bailey | Porsche 911S | — | 23 | WSPR historical record |
| 55 | 70 | GT2.5 | Lee McDonald-Algar Porsche | Lee McDonald · Bert Everett | Porsche 914/6 GT | — | 22 | WSPR historical record |
| 56 | 23 | GT+2.5 | Charlie Kemp | Charlie Kemp · Oscar Koveleski | Chevrolet Corvette | — | 21 | WSPR historical record |
| 57 | 97 | T5.0 | Robeto Quintanilla Jr. | Roberto Quintanilla · Jose Martinez | Chevrolet Camaro | — | 20 | WSPR historical record |
| 58 | 43 | T5.0 | Garcia Racing | Luis Sereix · Javier Garcia | Chevrolet Camaro | — | 15 | WSPR historical record |
| 59 | 63 | S2.0 | Vasek Polak | Sepp Greger · Arthur Blank · DNS - Kurt Hild | Porsche 910 | — | 10 | WSPR historical record |
| 60 | 55 | S2.0 | Roger McCaig | Roger McCaig · Maurice McCaig | Lola T212 Ford | — | 7 | WSPR historical record |
| 61 | 15 | GT2.5 | Toad Hall Racing | Bill Bean · Levon Pentecost · DNS - Anthony Torgersen | Porsche 911S | — | 5 | WSPR historical record |
| did_not_start | 29 | GT+2.5 | Iroquois Racing | Ken Schumacher · Bob Kiefer | Chevrolet Corvette | — | | WSPR historical record |
| did_not_start | 45 | GT+2.5 | T. C. Racing | Brad West · John Tunstall | Shelby GT350 | — | | WSPR historical record |
| did_not_start | 51 | T2.5 | Richard Crebs | Richard Crebs · Bill Jobe | Alfa Romeo GTV | — | | WSPR historical record |
| did_not_start | 64 | GT+2.5 | Roger Burdick | Bob Baechle · Roger Burdick | Chevrolet Corvette | — | | WSPR historical record |
| did_not_qualify | 60 | T5.0 | Robert Fordyce | Robert Fordyce · Richard Small | Chevrolet Camaro | — | | WSPR historical record |
| did_not_qualify | 67 | T2.5 | Frossman Racing Service | Bob Armstrong · Rod Bremner | Mazda R100 | — | | WSPR historical record |
| did_not_qualify | 75 | T2.5 | Clearwater Datsun | Bobby Clark · Ray Kessler | Datsun 510 | — | | WSPR historical record |
| did_not_qualify | 79 | GT+2.5 | Arrow Racing Team | Eddie Johnson · Clay Young | Chevrolet Camaro | — | | WSPR historical record |
| did_not_qualify | 84 | T2.5 | Chem Air Spray Inc. | Juan Montalvo · John Pauley | BMW 2002 | — | | WSPR historical record |
| source_section_did_not_practice | 53 | S2.0 | D. A. Baumgartner, Jr. | Don A. Baumgartner · Don Herman · F. Reed Andrews | Chevron B8 BMW | — | | WSPR historical record |
| entry_only | 36 | GT2.5 | Willie Braillard | Willy Braillard · Teddy Pilette | Porsche 911S | — | | WSPR historical record |
| entry_only | 40 | GT+2.5 | Larry Class | Larry Class · Bob Clemens · John Geist | Chevrolet Corvette | — | | WSPR historical record |
| entry_only | 65 | GT2.5 | Jean Sage | Jean Sage · Claude Haldi | Porsche 911S | — | | WSPR historical record |
| entry_only | 88 | T5.0 | Bobby Rinzler | Wilbur Pickett · Ed McIntyre | Chevrolet Camaro | — | | WSPR historical record |