On October 15, 2003, a significant restructuring of the Grand American Rolex Sports Car Series and Grand Am Cup classes was announced. Starting next year, the Grand Sport I (GS I) cars would be called Super Grand Sport (SGS) and compete in the Rolex Sports Car Series. Following this news, there were changes in the Grand Am Cup category. In 2004, there would be a single Grand Sport (GS) and Sport Touring (ST) class.

  • Grand Sport (GS): The quicker of the two classes - the group features the larger displacement engines as well as smaller four-cylinder motors with forced induction systems. The power-plants produce between 350 and 405-horsepower. Minimum weights range between 2,900 – 3,300-pounds, which is dependent on the motor configuration and displacement. This class includes cars such as the BMW M3, Pontiac Firebird, Ford Mustang, Nissan 350Z and Porsche 996.
  • Sport Touring (ST): The smaller displacement cars compete in this class in which engines typically produce between 170 and 240-horsepower. Popular vehicles found in this group are the Acura RSX, Mazda RX-8, BMW Z3, BMW 330i, Acura Integra Type R and Mini Cooper S.

While the classifications changed the rules remained the same. The cars are relatively unchanged from their road-going versions – modifications are mandated mainly for safety – roll cages, window nets, etc. They also used spec DOT-approved tires produced by Hoosier. Based on performance potential, the cars are placed in the Grand Sport or Sport Touring group.

The 2004 season consists of ten race weekends and starts in January at Daytona International Speedway, which is followed by a second event in Florida at Homestead-Miami Speedway. In April, the series will make a visit to Phoenix International Raceway for the Twin 200s. The Grand Sport and Sport Touring teams will compete in separate races. Then the series travels north of the border to compete at Le Circuit Mont-Tremblant. After this event, race weekends will take place Watkins Glen International, Mid-Ohio Sports Car Course and a second visit to Homestead-Miami Speedway. The final three rounds will be conducted in October and start with Virginia International Raceway. The penultimate weekend is at Alabama’s, Barber Motorsport Park, with the finale taking place at California Speedway.

The 2004 Grand Am Cup series season finale was held on the 2.8-mile roval at California Speedway. Team, Manufacturer and Driver titles would be decided in the Lexus Grand American 250. As a result, it was a ‘no holds barred’ event with a lot of contact and damaged race cars.

The pace lap for the final round of the 2004 Grand Am Cup series. Pacing the field is the pole-sitter, Craig Stanton, in TheRaceSite.com sponsored Porsche 996. Sharing the front row with Stanton is the Doncaster Racing prepared Porsche 996, shared by Robert Julien and J.F. Dumoulin. Behind the top qualifiers is the first of two Powell Motorsport Cadillacs entered in the event and a second Doncaster Racing Porsche.
Greg Wilkins did not start his 2004 Grand Am Cup season until round three at Phoenix International Raceway. Despite the late start, Wilkins scored two consecutive runner-up finishes. His co-driver at California Speedway, David Lacey, opened his year in race six at the Mid-Ohio Sports Car Course. The No. 17 Doncaster Porsche 996 qualified fourth and avoided much of the drama during the race. They were victorious by a one-lap margin.
In 2004, Bill Fenton Motorsports entered two Acura RSX-S at every event but rotated the driver line-up – which included Bill Fenton, Eric Curran, MikeLiebl, Bob Beede and Bob Endicott. Sharing the No. 27 Acura at California Speedway was Beede and Endicott. This was this first-time combination had competed together and it proved very successful. They started the contest fourth in Sport Touring and won the category.
The brothers, Will and Wayne Nonnamaker shared the No. 44 TheRaceSite.com sponsored Porsche 996. The younger brother, Wayne, had spent the season sharing the Porsche with his father, Joe. Their best result was a third-place finish in the previous round at Barber Motorsport Park. Will and Wayne qualified ninth at California Speedway and drove a clean race. In the end, they were rewarded with a runner-up finish.
Another team delivering an excellent performance was the No. 23 Unitech Racing prepared Nissan 350Z. Drivers, Blake Rosser and Kelly Collins had a 2004 series high finish of first place in round six at the Mid-Ohio Sports Car Course. They were gridded in twelfth for the start of the California 250. The duo inherited positions when some of the faster Grand Sport teams encountered problems and finished third overall.
The Grand Am Cup Grand Sport podium for the season finale at California Speedway. In the center, are the winners, by a one-lap margin, Greg Wilkins and David Lacey. ‘Better late than never,’ this was their first victory of 2004. Standing on the right are the runner-ups, brothers, Wayne and Will Nonnamaker. The Nonnamkers helped secure the team championship. Completing the rostrum are Kelly Collins and Blake Rosser.
The ST Driver’s title was to be decided between Turner Motorsport’s Will Turner and Don Salama and Sylvain Tremblay and David Haskell of SpeedSource. Tremblay and Haskell trailed the Turner duo. The SpeedSource Mazda RX-8 started third in class and during the race traded the lead with their main rivals. On lap-eighty-four, contact took the Turner BMW out of contention giving the championship to Tremblay and Haskell.
Finishing third in the Sport Touring category was the No. 12 TC Kline Racing prepared BMW Z4. Sharing the BMW and making their first Grand Am Cup start of the season, were Daniel Colembie and SCCA World Challenge competitor, Ken Dobson. They qualified twenty-eighth overall but second in their category. During the contest, the pair avoided a lot of the incidents and were rewarded with a podium result.
Points leader, Terry Borcheller started the year with Craig Stanton in a Porsche. At Mont-Tremblant, he joined the Devon Powell in the Powell Motorsport Cadillac. Entering the season finale, Borcheller led standings by four points. Powell qualified fifth but contact took the car out of contention. Borcheller’s rival, Stanton, also encountered issues and the pair finished the race tied in points. The title went to Stanton as he had more wins.
Craig Stanton entered the final round trailing Cadillac driver, Terry Borcheller, by four points in the battle for the Driver’s championship. Stanton shared No. 43 Porsche 996 with David Murry. He qualified on the pole but during the race both title contenders suffered problems with their cars. At the conclusion of the event, Stanton and Borcheller were tied for points but Stanton had more victories and was declared the Grand Sport champion.
Turner Motorsport driver’s Will Turner and Don Salama didn’t score any wins in 2004, but consistency gave them the lead in the Sport Touring title chase. Their main rivals were SpeedSource drivers, Sylvain Tremblay and David Haskell. The Turner BMW 330i started on the class pole and battled for the top spot. Unfortunately, contact will the Lexus of Andy Lally late in the contest ended their title hopes.
There was a ‘take no prisoners’ attitude in the season finale at California Speedway. All three championships were on the line in the Grand Sport and Sport Touring categories. As a result, there was a lot of contact. The No. 19 Race Prep Motorsports Porsche 996 is just one example of what many cars looked like after the California 250. Drivers, Tim Traver and David Gooding finished twenty-first in Grand Sport.
The final Sport Touring podium for the 2004 Grand Am Cup series. Standing the center are the winners, Bob Endicott and Bob Beede. This was Endicott’s second victory of the season and the first for Beede. On the right side of the rostrum are the runner-ups, Ken Dobson and Daniel Colembie. Occupying the final spot on the podium are the new class champions, Sylvain Tremblay and David Haskell from SpeedSource.

1GSWilkins / LaceyPorsche 996Doncaster Racing89
2GSNonnamaker / NonnamakerPorsche 996The Race Site.com88
3GSRosser / CollinsNissan 350ZUnitech Racing88
4GSSaid / HainerNissan 350ZUnitech Racing88
5GSWright / MunsonBMW M3Anchor Racing88
6GSThornton / RussellBMW M3Automatic Racing88
7GSShreiner / LapcevichFord Mustang CobraShreiner Racing87
8GSSchuitemaker / ZachariasNissan 350ZSchuitemaker Motorsports87
9GSCronin / HaynerNissan 350ZUnitech Racing87
10GSEscalette / PlumbPorsche 996Stuttgart Performance87
11GSMacAlpine / Rehagen / MartinFord Mustang CobraRehagen Racing87
12STEndicott / BeedAcura RSX-SBill Fenton Motorsports86
13GSFrance / ZogaibNissan 350ZSchuitemaker Motorsports86
14STHaskell / TremblayMazda RX-8SpeedSource86
15STDobson / ColembieBMW Z4TC Kline Racing85
16STFenton / LieblAcura RSX-SBill Fenton Motorsports85
17STBradley / EspenlaubMazda RX-8SpeedSource85
18STHimes / EllingerBMW Z3ICY / SL Motorsports84
19STFanelli / AbelloMazda RX-8SpeedSource83
20STSheehan / Brumbaugh / JamesLexus IS300Team Lexus83
21STYork / ThomsonBMW Z3Compass360 Racing83
22GSStanton / MurryPorsche 996The Race Site.com83
23GSNonnamaker / NonnamakerPorsche 996The Race Site.com82
24GSRiddle / WilsonPorsche 996The Race Site.com81
25STTurner / SalamaBMW 330iTurner Motorsport81
26GSCamp / MannFord Mustang CobraFrederick Motorsports80
27STEaton / HowardMazda RX-8Southpaw Racing79
28GSPowell / BorchellerCadillac CTS-VPowell Motorsport76
29STRoach / KimballDodge Neon SRT4Roach Racing76
30STLally / LazzaroLexus IS300Team Lexus72
31GSPlummer / CosmoPorsche 996BGB Motorsports65
32STHaskell / Tuaty / SchlesingerMazda RX-8SpeedSource57
33GSMacDonald / BrownFord Mustang CobraFrederick Motorsports55
34STWright / Olsen / MunsonBMW 330iAnchor Racing46
35GSPicket / PumpellyPorsche 996Race Prep Motorsports40
36STPhillips / Wong / DiedrickNissan Sentra SE-RDEI Racers Group40
37GSGooding / TraverPorsche 996Race Prep Motorsports39
38GSFinlay / McDowellPorsche 996BGB Motorsports27
39GSDumoulin / JulienPorsche 996Doncaster Racing23
40GSHeinricy / WeinbergCadillac CTS-VPowell Motorsport20
41GSStubbs / MasessaPorsche 996The Race Site.com19
42GSKohler / SmithMustang SaleenTF Racing18
43GSSachs / SnipesCadillac CTS-VSnipes Motorsport14
44STBriody / ConnollyBMW 330ciMatt Connolly Motorsports11
45GSSt. John / MartinelliBMW M3Automatic Racing5
46STJames / GoldsboroughLexus IS300Team Lexus4
47GSFox / KrohnPorsche 996G&W Motorsports3
48GSReichard / Helton / BoguszBMW M3Automatic Racing2

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