# 1983 12 Hours of Sebring

The 12 Hours of Sebring, The Coca-Cola Classic, was the third round of the 1983 IMSA GT Championship and was held at the Sebring International Raceway, on March 19, 1983. Victory overall went to the No. 9 Personalized Autohaus Porsche 934 driven by Wayne Baker, Jim Mullen, and Kees Nierop.

## Race results

Class winners in bold.
| Pos | Class | No | Team | Drivers | Car | Laps |
| 1 | GTO | 9 | Personalized Autohaus | Wayne Baker Jim Mullen Kees Nierop | Porsche 934 | 231 |
| 2 | GTP | 5 | Bob Akin Motor Racing | Bob Akin Dale Whittington John O'Steen | Porsche 935 | 231 |
| 3 | GTP | 86 | Bayside Disposal Racing | Hurley Haywood Al Holbert | Porsche 935 | 229 |
| 4 | GTO | 61 | Vista Racing | Don Courtney Luis Sereix Brent O'Neill | Chevrolet Monza | 227 |
| 5 | GTP | 22 | Nimrod Racing | Reggie Smith Lyn St. James Drake Olson | Nimrod NRA/C2 | 224 |
| 6 | GTU | 66 | Mike Meyer Racing | Jack Dunham Jeff Kline Jon Compton | Mazda RX-7 | 224 |
| 7 | GTO | 65 | Manuel Villa | Luis Gordillo Manuel Villa Chiqui Soldevilla | Porsche 911 Carrera RSR | 224 |
| 8 | GTU | 82 | Trinity Racing | Joe Varde Jack Baldwin John Casey | Mazda RX-7 | 223 |
| 9 | GTO | 01 | Marketing Corporation of America | John Morton Tom Klausler | Ford Mustang | 222 |
| 10 | GTO | 35 | Pegasus Racing | Al Leon Paul Gilgan Wayne Pickering | Porsche 911 Carrera RSR | 222 |
| 11 DNF | GTP | 10 | Cooke Racing | Ralph Kent-Cooke Jim Adams Josele Garza | Lola T600 | 221 |
| 12 | GTP | 94 | Henn's Swap Shop Racing | Don Whittington Bill Whittington | Porsche 935 | 218 |
| 13 | GTP | 3 | Grid Motor Racing | Skeeter McKitterick Milt Minter | Grid S1 | 216 |
| 14 | GTU | 37 | Burdsall/Welter | Peter Welter Tom Burdsall Nort Northam | Mazda RX-7 | 216 |
| 15 | GTU | 23 | Roe/Selby | Tim Selby Earl Roe | Porsche 911 Carrera RSR | 210 |
| 16 | GTO | 83 | R&H Racing | Rainer Brezinka Rudy Bartling Roger Schramm | Porsche 911 Carrera RSR | 204 |
| 17 | GTU | 92 | Kent Racing | Lee Mueller Terry Visger | Mazda RX-7 | 204 |
| 18 | GTU | 63 | RGP 500 Racing | Jim Downing John Maffucci Chuck Ulinski | Mazda RX-7 | 204 |
| 19 | GTU | 11 | Paul Goral | Paul Goral Larry Figaro Peter Uria | Porsche 911 | 202 |
| 20 | GTO | 69 | Hiram Cruz Racing | Mandy Gonzalez Hiram Cruz | Porsche 934 | 201 |
| 21 DNF | GTO | 7 | Racing Beat | Pete Halsmer Rick Knoop | Mazda RX-7 | 199 |
| 22 | GTU | 90 | 901 Shop | Mike Schaefer Doug Zitza Jack Refenning | Porsche 911 SC | 198 |
| 23 | GTO | 06 | Juan Lopez | Juan Lopez Luis Mendez | Porsche 911 Carrera | 192 |
| 24 | GTO | 89 | Taca El Salvador | "Jamsal" Eduardo Barrientos Eduardo Galdamez | Porsche 911 Carrera RSR | 188 |
| 25 | GTU | 27 | Scuderia Rosso | Jim Fowells Ray Mummery Steve Potter | Mazda RX-7 | 185 |
| 26 | GTO | 14 | Oftedahl Racing | Carl Shafer Carlos Ramirez Mike Meldeau | Pontiac Firebird | 185 |
| 27 | GTU | 68 | Jack Rynerson | Jack Rynerson Van McDonald Chris Wilder | Porsche 911 | 183 |
| 28 | GTO | 57 | Dave Heinz Racing | Dave Heinz Jerry Thompson Paul Gentilozzi | Chevrolet Camaro | 181 |
| 29 | GTO | 03 | Bob's Speed Products | Bob Lee Timothy S. Lee Gary Myers | Ford Maverick | 180 |
| 30 | GTU | 91 | Bryant & Graham Racing | Charles W. Bryant Alex Priest Mike Guido | BMW 2002 | 178 |
| 31 DNF | GTU | 93 | Foreign Exchange | John Higgins James King Chip Mead | Porsche 911 | 175 |
| 32 | GTU | 30 | Case Racing | Ron Case Craig Case Dave Pannacione | Porsche 911 | 173 |
| 33 DNF | GTU | 60 | Team Morrison | Jim Cook Steve Dietrich Al Bacon | Mazda RX-7 | 168 |
| 34 | GTU | 51 | Red Roof Inns | Doug Carmean Don Herman | Mazda RX-7 | 167 |
| 35 | GTO | 58 | Brumos Racing | Deborah Gregg Kathy Rude Bonnie Henn | Porsche 924 Carrera GTR | 165 |
| 36 | GTO | 96 | Weld Fixturing | Phil Byrd Freddy Baker Robert Kirby | Porsche 911 Carrera RSR | 162 |
| 37 | GTU | 42 | Gary Wonzer | Gary Wonzer Bill Bean Buzz Cason | Porsche 911 | 162 |
| 38 DNF | GTU | 95 | Ned Skiff | Ned Skiff Jim Leo | Renault 12 | 159 |
| 39 DNF | GTO | 19 | Van Every Racing | Lance van Every Ash Tisdelle | Porsche 911 Carrera RSR | 153 |
| 40 DNF | GTO | 02 | Marketing Corporation of America | Ronnie Bucknum John Bright | Ford Mustang | 153 |
| 41 | GTO | 4 | Stratagraph | Billy Hagan Gene Felton Sam Moses Lloyd Frink | Chevrolet Camaro | 153 |
| 42 | GTU | 04 | Di Lella Racing | Vince DiLella Manuel Cueto | Porsche 911 | 152 |
| 43 | GTO | 79 | Whitehall/Promotion | Tom Winters Bob Bergstrom Peter Dawe | Porsche 924 Carrera GTR | 148 |
| 44 DNF | GTP | 24 | Pegasus III Racing | M. L. Speer Ken Madren Ray Ratcliff | Porsche 935 | 145 |
| 45 DNF | GTO | 49 | OMR Engines | Hoyt Overbagh Peter Kirill Paul Romano | Chevrolet Monza | 145 |
| 46 DNF | GTO | 13 | Oftedahl Racing | Paul Fassler Steve Pope Carl Shafer | Pontiac Firebird | 142 |
| 47 | GTO | 18 | Diehl Hi-Pro | Carmen Lista David Marks Roy Newsome Bobby Diehl | Chevrolet Camaro | 140 |
| 48 | GTU | 76 | Hi Fi Hospital | Timothy Lee Al White Irwin Ayes | Ford Capri | 140 |
| 49 | GTO | 15 | DL Performance Engineering | Doug Lutz Mike Brummer Larry Connor | Porsche 911 Carrera RSR | 139 |
| 50 DNF | GTO | 36 | Herman + Miller P+A | Paul Miller Jim Busby Ron Grable | Porsche 924 Carrera GTR | 132 |
| 51 | GTU | 87 | Don Flores | Robert Gottfried Tom Turner Donald Flores | Porsche 911 | 131 |
| 52 DNF | GTP | 16 | Hinze Fencing | Marty Hinze Randy Lanier Terry Wolters | March 82G | 128 |
| 53 | GTO | 33 | Karl Keck | Karl Keck Bill McDill Robert Whitaker | Chevrolet Corvette | 128 |
| 54 DNF | GTO | 29 | Overby's | Robert Overby Don Bell Chris Doyle | Chevrolet Camaro | 127 |
| 55 | GTU | 75 | Bryant & Graham Racing | Cameron Worth Alan Crouch Janis Taylor | Ford Pinto | 127 |
| 56 DNF | GTP | 09 | Henn's Swap Shop Racing | Derek Bell Michael Andretti John Paul Jr. | Porsche 935 | 125 |
| 57 DNF | GTP | 8 | Shelton Ferrari | Steve Shelton Tom Shelton | Ferrari 512 BB | 120 |
| 58 DNF | GTP | 44 | Group 44 | Bob Tullius Bill Adam | Jaguar XJR-5 | 95 |
| 59 DNF | GTO | 34 | Drolsom Racing | George Drolsom Steve Cohen William Gelles | Porsche 924 Carrera GTR | 94 |
| 60 DNF | GTO | 26 | Centurion Leasing | Tom Nehl Nelson Silcox Patty Moise | Chevrolet Camaro | 92 |
| 61 DNF | GTP | 21 | Nimrod Racing | Victor Gonzalez Drake Olson | Nimrod NRA/C2 | 86 |
| 62 DNF | GTP | 05 | T&R Racing | Tico Almeida Ernesto Soto | Porsche 935 | 82 |
| 63 DNF | GTO | 99 | Londono Bridge Racing | Gustavo Londono Carlos Munoz Hugo Gralia | Porsche 911 Carrera RSR | 81 |
| 64 DNF | GTO | 20 | Paul Canary Racing | Paul Canary Jim Sanborn | Pontiac Firebird | 78 |
| 65 | GTU | 52 | TFC Racing | Dick Gauthier Tom Cripe Ron Collins Bill McVey | Porsche 911 | 67 |
| 66 DNF | GTP | 77 | Z&W Enterprises | Pierre Honegger Walt Bohren | Mazda GTP | 61 |
| 67 DNF | GTO | 64 | Marcus Opie | Marcus Opie Tim Morgan Grant Bradley | Chevrolet Corvette | 59 |
| 68 DNF | GTU | 78 | Der Klaus Haus | Klaus Bitterauf Vicki Smith Scott Flanders | Porsche 911 | 59 |
| 69 DNF | GTO | 28 | Air Florida | "Fomfor" Arnoldo Kreysa Albert Naon | BMW M1 | 58 |
| 70 DNF | GTU | 38 | Mandeville Auto/Tech | Roger Mandeville Amos Johnson Danny Smith | Mazda RX-7 | 56 |
| 71 DNF | GTO | 54 | Daniel Vilarchao | Reynaldo Fernandez Daniel Vilarchao | Chevrolet Camaro | 56 |
| 72 DNF | GTO | 6 | Shafer Motor Racing | Craig Shafer George Shafer Joe Maloy | Chevrolet Camaro | 55 |
| 73 DNF | GTP | 74 | Mark Wagoner | Del Russo Taylor Larry Figaro | Chevron GTP | 53 |
| 74 DNF | GTP | 12 | The Cummings Marque | Don Cummings Craig Rubright Charles Gano | Chevrolet Monza | 50 |
| 75 DNF | GTP | 25 | Red Lobster Racing | Dave Cowart Kenper Miller Mauricio de Narváez | March 82G | 46 |
| 76 DNF | GTU | 31 | Pegasus Racing | Jack Griffin John Zouzelka | Porsche 914 | 38 |
| 77 DNF | GTO | 50 | Latino Racing | Kikos Fonseca Tato Ferrer Diego Febles | Porsche 911 Carrera RSR | 36 |
| 78 DNF | GTU | 08 | Diehl Hi Pro Enterprises | Bobby Diehl Roy Newsome | Mazda RX-7 | 29 |
| 79 DNF | GTP | 39 | Holly Racing | John Gunn Ricardo Londono | Phoenix JG1 | 26 |
| 80 DNF | GTO | 40 | Bieri Racing | Uli Bieri Matt Gysler Duff Hubbard | BMW M1 | 21 |
| 81 DNF | GTO | 07 | Londono Bridge Racing | Fred Flaquer Gustavo Londono Ricardo Londono Rene Rodriguez | Porsche 911 Carrera RSR | 21 |
| 82 DNF | GTP | 17 | Dingman Bros. Racing | Billy Dingman Roger Bighouse | Chevrolet Corvette | 11 |
| 83 DNF | GTP | 47 | Pepe Romero | Bill Whittington Pepe Romero Doc Bundy | March 83G | 8 |
| 84 DNF | GTO | 62 | Bill Nelson | Bill Nelson Dale Kreider Lojza Vosta | Pontiac Firebird | 1 |
| DNS | GTP | 2 | Hinze Fencing | Marty Hinze Randy Lanier Terry Wolters | Porsche 935 | 0 |
| DNS | GTO | 53 | Superior Racing Team | Raul Garcia Eugenio Matienzo | Chevrolet Camaro | 0 |
| DNS | GTU | 80 | Hallet Motor Racing Circuit | Anatoly Arutnoff Jose Marina | Lancia Stratos HF | 0 |

### Class Winners

| Class | Winners | |
| GTP | Akin / Whittington / O'Steen | Porsche 935 K3 |
| GTO | Baker / Mullen / Nierop | Porsche 934 |
| GTU | Dunham / Kline / Compton | Mazda RX-7 |