| 1998 IMSA GT Championship | |||
| Previous: | 1997 | Next: | 1999 (ALMS) |
The 1998 Professional SportsCar Racing Championship season was the 28th season of the IMSA GT Championship, the final one of the original IMSA. It consisted of an open-cockpit World Sports Car (WSC) class of prototypes and Grand Tourer-style racing cars divided into GT1, GT2, and GT3 classes. It began March 22, 1998, and ended October 25, 1998, after eight rounds.
The IMSA GT Championship was replaced by the American Le Mans Series in 1999, which was supported by the Automobile Club de l'Ouest (ACO). This series, based on the 24 Hours of Le Mans, was initially previewed during the 1998 season with the running of the inaugural Petit Le Mans. Professional SportsCar Racing remained as the series organizer.
Of note is the lack of the 24 Hours of Daytona and the Six Hours of Watkins Glen, both of which were acquired by the revived SCCA United States Road Racing Championship.
| Rnd | Race | Length | Circuit | Date |
|---|---|---|---|---|
| 1 | Superflo 12 Hours of Sebring | 12 Hours | Sebring International Raceway | March 22 |
| 2 | Toshiba Nevada Grand Prix | 3 Hours 45 Minutes | Las Vegas Motor Speedway | April 26 |
| 3 | The Dodge Dealers Grand Prix † | 1 Hour 45 Minutes | Lime Rock Park | May 25 |
| 4 | Sports Car Grand Prix of Road Atlanta | 3 Hours 45 Minutes | Road Atlanta | June 21 |
| 5 | Mosport Festival | 2 Hours 45 Minutes | Mosport | August 9 |
| 6 | NAPA Sebring Classic | 3 Hours | Sebring International Raceway | September 20 |
| 7 | Petit Le Mans | 10 Hours or 1000 Miles | Road Atlanta | October 10 |
| 8 | Visa Sports Car Championships | 2 Hours 30 Minutes | Laguna Seca Raceway | October 25 |
† - Two separate races were held for Lime Rock: One for WSC, one for the GT classes.
Points are awarded to the finishers in the following order:
Exception however for the 12 Hours of Sebring, which awarded in the following order:
Teams only score the points of their highest finishing entry in each race.
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Doyle-Risi Racing | Ferrari 333 SP | Ferrari F310E 4.0 L V12 | 26 | 25 | 19 | 19 | 17 | 11 | 25 | 19 | 161 |
| 2 | Dyson Racing | Riley & Scott Mk III | Ford 5.0 L V8 | 24 | 25 | 25 | 25 | 25 | 21 | 145 | ||
| 3 | Downing Atlanta | Kudzu DLM Kudzu DLY | Mazda 2.0 L 3-Rotor Mazda R26B 2.6 L 4-Rotor | 15 | 21 | 13 | 14 | 14 | 13 | 15 | 13 | 118 |
| 4 | Intersport Racing | Riley & Scott Mk III Spice SC95 | Ford 5.0 L V8 Oldsmobile Aurora 4.0 L V8 | 18 | 19 | 11 | 9 | 15 | 12 | 13 | 17 | 114 |
| 5 | MOMO/Doran Enterprises | Ferrari 333 SP | Ferrari F310E 4.0 L V12 | 30 | 21 | 10 | 19 | 12 | 15 | 107 | ||
| 6= | Transatlantic Racing Services | Riley & Scott Mk III | Ford 5.0 L V8 | 17 | 14 | 17 | 19 | 19 | 7 | 93 | ||
| 6= | Matthews-Colucci Racing | Riley & Scott Mk III | Ford 5.0 L V8 | 20 | 14 | 15 | 15 | 15 | 14 | 93 | ||
| 8 | Dollahite Racing | Spice BDG-02 Ferrari 333 SP | Chevrolet 6.0 L V8 Ferrari F310E 4.0 L V12 | 13 | 17 | 14 | 44 | |||||
| 9 | Genesis Racing | Hawk MD3R | Mazda 2.0 L 3-Rotor Chevrolet 6.0 L V8 | 19 | 11 | 30 | ||||||
| 10 | Kopf Race Products | Keiler KII | Ford 5.0 L V8 | 15 | 12 | 27 | ||||||
| 11 |  BMW Motorsport | Riley & Scott Mk III | BMW 4.0 L V8 | 25 | 25 | |||||||
| 12 | TRV Motorsports | Kudzu DL-4 | Chevrolet 6.0 L V8 | 22 | 22 | |||||||
| 13 | Porsche AG | Porsche LMP1-98 | Porsche 3.2 L Turbo Flat-6 | 21 | 21 | |||||||
| 14 | Team Cascandia | Argo JM20 | Chevrolet 6.0 L V8 | 17 | 17 | |||||||
| 15 | Denaba Racing | Kudzu DLM | Buick 4.5 L V6 | 14 | 14 | |||||||
| 16 | Fantasy Junction | Cannibal | Chevrolet 6.0 L V8 | 10 | 10 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Panoz Motor Sports | Panoz Esperante GTR-1 | Ford (Roush) 6.0 L V8 | 30 | 25 | 25 | 21 | 25 | 25 | 21 | 25 | 197 |
| 2 | Champion Motors | Porsche 911 GT1 Evo | Porsche 3.2 L Turbo Flat-6 | 26 | 25 | 25 | 76 | |||||
| 3 | Mosler Automotive | Mosler Raptor | Chevrolet 6.3 L V8 | 20 | 19 | 19 | 57 | |||||
| 4 | Rock Valley Racing | Chevrolet Camaro | Chevrolet V8 | 22 | 22 | |||||||
| 5 | G & W Motorsports | Porsche 911 GT1 Evo | Porsche 3.2 L Turbo Flat-6 | 21 | 21 | |||||||
| 6 | Art Pilla | Porsche 911 GT2 Evo | Porsche 3.6 L Turbo Flat-6 | 19 | 19 | |||||||
| 7 | Robinson Racing | Oldsmobile Aurora GTS-1 | Oldsmobile 4.0 L V8 | 18 | 18 | |||||||
| 8= | John Annis | Chevrolet Camaro | Chevrolet V8 | 17 | 17 | |||||||
| 8= | Porsche AG | Porsche 911 GT1-98 | Porsche 3.2 L Turbo Flat-6 | 17 | 17 | |||||||
| 10 | Greg Malvaso | Chevrolet Camaro | Chevrolet V8 | 16 | 16 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Schumacher Racing | Porsche 911 GT2 | Porsche 3.6 L Flat-6 | 22 | 21 | 21 | 21 | 21 | 25 | 17 | 148 | |
| 2 | Prototype Technology Group | BMW M3 | BMW 3.2 L I6 | 25 | 25 | 25 | 25 | 100 | ||||
| 3 | Konrad Motorsport | Porsche 911 GT2 | Porsche 3.6 L Turbo Flat-6 | 30 | 21 | 25 | 76 | |||||
| 4 |  C.J. Motorsports | Porsche 911 GT2 | Porsche 3.6 L Turbo Flat-6 | 24 | 19 | 19 | 62 | |||||
| 5 | Saleen-Allen Speedlab | Saleen Mustang SR | Ford 5.9 L V8 | 26 | 14 | 40 | ||||||
| 6= | Martin Snow Racing | Porsche 911 GT2 | Porsche 3.6 L Turbo Flat-6 | 19 | 19 | 38 | ||||||
| 6= | American Spirit Racing | Vector M12 | Lamborghini 5.7 L V12 | 19 | 19 | 38 | ||||||
| 8 | David Friedman | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 19 | 17 | 36 | ||||||
| 9 |  Marcos Racing International | Marcos LM600 | Chevrolet 6.0 L V8 | 12 | 21 | 33 | ||||||
| 10 | Freisinger Motorsport | Porsche 911 GT2 | Porsche 3.6 L Turbo Flat-6 | 25 | 25 | |||||||
| 11 | Bell Motorsports | BMW M3 | BMW 3.2 L I6 | 21 | 21 | |||||||
| 12 | Rohr | Porsche 911 GT2 Evo | Porsche 3.6 L Turbo Flat-6 | 19 | 19 | |||||||
| 13 | Mark Hein | Acura NSX | Acura 3.2 L V6 | 18 | 18 | |||||||
| 14= |  Larbre Compétition | Porsche 911 GT2 | Porsche 3.6 L Turbo Flat-6 | 17 | 17 | |||||||
| 14= | Jon Lewis | Vector M12 | Lamborghini 5.7 L V12 | 17 | 17 | |||||||
| 16= | Cameron Worth | Mazda RX-7 | Mazda 2.0 L 3-Rotor | 15 | 15 | |||||||
| 16= | Alex Job Racing | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 15 | 15 | |||||||
| 18 | Charles Coker Jr. | Porsche 968 Turbo RS | Porsche 3.0 L Turbo I4 | 13 | 13 |
| Pos | Team | Chassis | Engine | Rd 1 | Rd 2 | Rd 3 | Rd 4 | Rd 5 | Rd 6 | Rd 7 | Rd 8 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Prototype Technology Group | BMW M3 | BMW 3.2 L I6 | 30 | 25 | 25 | 25 | 25 | 19 | 21 | 21 | 191 |
| 2 | Alex Job Racing | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 24 | 17 | 19 | 19 | 25 | 12 | 25 | 141 | |
| 3 | G & W Motorsports | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 22 | 19 | 15 | 15 | 71 | ||||
| 4 | Team A.R.E. | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 20 | 14 | 25 | 11 | 70 | ||||
| 5 | AASCO Performance (#55) | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 13 | 13 | 17 | 43 | |||||
| 6 | Tim Vargo | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 19 | 15 | 34 | ||||||
| 7= | The Racer's Group | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 14 | 19 | 33 | ||||||
| 7= | AASCO Performance (#17) | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 19 | 14 | 33 | ||||||
| 9 |  Team Ecuador | Nissan 240SX | Nissan 2.4 L I4 | 10 | 13 | 23 | ||||||
| 10= | Olive Garden Racing | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 17 | 17 | |||||||
| 10= | Gordon Zimmerman | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 17 | 17 | |||||||
| 12 | Bill Radar | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 16 | 16 | |||||||
| 13= | Phoenix Motorsports | Pontiac Firebird | Pontiac V8 | 15 | 15 | |||||||
| 13= | Technodyne | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 15 | 15 | |||||||
| 15= | Chris Mitchum | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 14 | 14 | |||||||
| 15= | T.C. Kline | BMW M3 | BMW 3.2 L I6 | 14 | 14 | |||||||
| 17 | Raymond Boissoneau | Mazda RX-7 | Mazda 2.0 L 3-Rotor | 13 | 13 | |||||||
| 18= | Reisman Property Interests | Chevrolet Camaro | Chevrolet V8 | 12 | 12 | |||||||
| 18= | Dale White | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 12 | 12 | |||||||
| 20 | First Union | Porsche 911 Carrera RSR | Porsche 3.8 L Flat-6 | 11 | 11 |
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