IMSA - Knowledge

36: 834: 720: 1660:(SCCA) regions. All members put up a bond to ensure they would participate if it came to fruition so that a sanctioning body and a sponsor would be assured success from the start. In the beginning an outline of series rules was drawn up to attract like-minded drivers to join in the effort. Once the association was formed, a final version was to be drafted with all the members' input. The rules along with the association's proposed plan to organize and launch the series, were sent to several manufacturers soliciting sponsorship, including 925: 195: 184: 354: 2008: 1885: 1707: 1525: 1445: 636:, forcing him to rethink his priorities. He began to realise that the Camel GT series was in danger of becoming oriented toward the factory-backed teams and less to the privateers as Bishop originally intended. Rules were modified to accommodate the factory teams, which wanted to get into the series, despite Bishop's belief that such changes would be unfavorable to the series in the long run, especially if they failed to meet their objectives. 408: 1645:(ARR), founded by Steve Coleman of Raleigh, North Carolina. The association's objective was to start an inexpensive but competitive series with large car counts. The main prerequisite requirement was a series that would allow drivers who had regular jobs and a life to compete with at least a chance to win the championship without having to travel coast to coast, as was the case with other similar series such as the 2000:, and Jim Minnaker in a factory ZR1 Corvette. It was subsequently announced by IMSA that they felt that it was not in the best interests of the series to allow the Consulier to continue with such a massive weight advantage, so as a result they added a 300 lb (140 kg) weight penalty to the GTP, before its being barred from the series altogether at the end of the season, despite taking a runner up spot. 1566: 1688:

there might be as many as fifty, if Renault and IMSA didn't revise the proposed series rules to a point the majority of drivers would pull out before then. Still skeptical he agreed, convinced by Renault's commitment and the driver's assurances of a full field for the inaugural race. Exactly one year to the date on April 4, 1982, the inaugural race was held at

643:. Bishop shortly stepped down as the organisation's president in favor of Mark Raffauf, his deputy president and the organisation's representative on the ACCUS (Automobile Competition Committee for the United States), an FIA recognised sporting body. Cone and Parker in turn sold the organization to businessman Charles Slater by the early 1990s. 2057:. All running identical chassis powered by BMW motorcycle engines, the series serves as stepping stone for formula car drivers moving into higher international series. A world championship of all Formula BMW series is run at the end of the year, taking the top drivers from Formula BMW USA and the other similar series elsewhere in the world. 1762:, after the Firehawk performance tire brand. Total prize purses, year-end point funds and manufacturer contingency awards in 1991 amounted up to $ 1 million. As required by the sponsor, all cars were required to use its own Firehawk SZ or Firehawk SV tires which could be shaved to racing depth, or the all-season Firehawk GTX. 876:'s motorsports program in North America, John Doonan, was confirmed to be Atherton's replacement. Ed Bennett, longtime NASCAR executive, was also President and CEO of Grand-Am Road Racing from August 2011 to December 2013 during the merger period and has continued as CEO of the modern era IMSA since January 2014. 1262:

with the revolutionary innovation of requiring DOT radial tires. New rules allowed for cars over 1.6 L divided between two classes. Class A was for Sedans under 2 L., except for overhead cam engines which were limited to 1.6 L. Class B was for larger engines up to whatever IMSA decided appropriate

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as a professional oval track series and wanted to do the same for road racing. After discussions with Bishop, IMSA was born and Bishop was given the sole control of the organization (like NASCAR, there was no board of directors). France financed the majority of the organization and owned 75% of the

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In 1958, things changed for Bishop as the SCCA experienced internal changes. A new executive director position was created, to which each regional executive reported. This position was taken by Hugo Rush, who later became instrumental in Allen's departure. Although Bishop's relationship with Rush was

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are among the few full-time professional drivers who cut their teeth in the series. Meetings usually attracted over ninety entries and were often televised, the duration of the races varying from one two hour and a half event to one 24 hour race. The series would soldier on until 1998, by then known

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with about 195 hp (145 kW) connected to a five-speed gearbox, weighing at 2,100 lb (950 kg). The car took a pole-to-chequered flag finish, easily outpacing the other more powerful but heavier cars, even if they were piloted by talented and more experienced drivers such as Hurley

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Renault not only responded, it jumped at the chance, since it was quite familiar with the concept of a one-make series. ARR and Renault negotiated to finalize a format competing with the Le Car R5. Due to classic concerns of track owners and sanctioning bodies, Renault was reluctant to agree to the

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was a category for US-built cars and throughout the series, it was always run as a support race to the premier GT series. Starting in 1977, the series ran until 1989. In 1992, the premier GTO category was renamed to GTS due to sponsor reasons, and rather than leaving the GTO category redundant, the

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for under 1.6 liters. Limited preparation was permitted, and since the entrants were meant to be street-driven race cars, the original rules required the retention of headlights, seats, upholstery, window cranks, stock brakes and original springs and radial tires. Only the exhaust systems and shock

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Gen 1 and Gen 2 cars called the IMSA HSR Prototype Challenge. A minimum 20-car grid was announced as the requirement for standalone races to be held, if not incorporated into races with other prototypes. The six-event calendar will follow HSR's usual events, including the Classic 24 Hour at Daytona

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Rush would later depart due to his disagreement with the club as it moved to promote professional motor sports. Bishop took his place as executive director and was now responsible for both amateur and professional programs. To ensure a more serious level of competition, he was tasked with rewriting

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between Bishop, B Clar, the US Competition Director of Renault, and Coleman representing the drivers. Renault offered a major support program and ARR would guarantee a minimum of twenty-five entrants for the first race. Bishop, still skeptical, agreed to sanction the series. Coleman even suggested

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series. Races in this series are usually run in support of events for the IMSA WeatherTech SportsCar Championship. Events consist of two 45-minute sprint races with no pit stops or driver changes. Unlike its predecessor series, the VP Racing SportsCar Challenge features multi-class racing with

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shortly thereafter. Bishop's duties consisted of defining technical rules and general administration of SCCA competition, as well as providing artwork for many of the club's magazines and event programmes. He became well known in the motorsport scene and enjoyed a good relationship with the

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moniker. This time, the series was more restricted to current models, that is to say models then currently available for retail sale in dealerships throughout the US. Other than that, the series had rules and race formats that were similar to the RS series, being an endurance series.

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At the 2021 Daytona 24 Hours, IMSA and the ACO announced the historic alignment of the technical regulations for sportscar racing, which was further detailed in June of that year, which brought about the convergence of all sportscar regulations between the FIA, IMSA and the ACO.

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drivers' points system. Their counterproposal was to run an East Coast series in lieu of nationwide. Since most of the interested drivers were from the East Coast, and the amount of travel required was somewhat limited, this was accepted by the drivers.

1278:) was sanctioned by NASCAR and consisted of 4-cylinder cars purpose-built to run NASCAR ovals. A few RS regulars are known to have run both Series with the same car making minimal changes to accommodate the difference in rules. Carson Baird, driving a 1372:

and Class B for over 1.6 L with overhead cam and over two liters up to the largest permitted engine being the 232 cubic inches (3.80 L) AMC Gremlin. In 1974 all cars were placed in one class, with the only parity for the smaller engines being free

1979:, as it was bordering on a departure from the showroom stock ethos, as well as being criticised for having little common with cars that the general public ever saw on a public road. The GTP debuted with just four silver Consulier Series II GTP at 783:

GT Pro series. IMSA became part of Panoz Motorsports Group, which included the ALMS, Elan Motorsports Technology and Mosport, Sebring and Road Atlanta race tracks. Scott Atherton was appointed President of Panoz Motorsports Group and he appointed

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series of cars. The series was an invitational affair with forty one drivers are selected out of four hundred applicants to participate in the Women's Global GT Series. The grid would usually consists of experienced racers such as former

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in October 1969. The SCCA threatened the circuit management and asked them to block IMSA from racing there. The event was held, although IMSA had to pay an additional $ 10,000 in rental fees. The race had an attendance of 328 spectators.

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in 2001, to solidify the American Le Mans Series. Don Panoz renamed the sanctioning organization back to the International Motor Sports Association and was the official sanctioning body of the ALMS, as well as its support series, the

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engine. Each class had an overall championship, a master's championship for drivers at least 40 years of age, and a team championship. In 2017 the series became the IMSA Prototype Challenge presented by Mazda, featuring

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Championship was a series featuring two classes of single-seat prototype cars racing simultaneously. Most races were held in support of the United SportsCar Championship; prior to 2014 it was the support series for the

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During the sportscar racing "split" from 1998 until 2013, a rival series from Canada, the Motorola Cup, was sanctioned by the SCCA, with Grand-Am taking over in 2001. This is the other series that led to the modern

1972:. with a total prize fund of $ 555,555 for the 1992 season. All cars had to run on road-going Bridgestone Potenza RE71 tires which were trimmed to semi-racing depth and during a wet race, cars raced on full depth. 1045:

prototypes and GTs on track at the same time. As the series is a development series for higher tier series among IMSA's championships, drivers are required to hold either a Silver or Bronze categorization from the

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absorbers were free. Later rules regarding headlights, seats, upholstery, window cranks, original springs, and other stock elements were loosened up somewhat. From the beginning, engine modifications similar to

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The organization soldiered on despite the small crowds, and another ten races were planned. Bill France, suffering from financial setbacks, brought on new investors to take over part of his stake in the series.

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On September 19, 2019, Scott Atherton announced retirement from his position as the President of the International Motor Sports Association at the end of 2019. He had held that role since the merger of IMSA's

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B Sedan were permitted, with the main difference being that over-boring cylinders was not allowed, and stock carburetors being required, but modifications allowed. The series was loosely based on rival SCCA

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or not. That being the only race held in 1969 details are sketchy, but over the winter of 1969–70 rules were officially promulgated for this Series. It was initially to be known as the

1353:. Feezell didn't fare too well having to drive against the local four-cylinder "beater class" cars brought in to fill out the field, with their protruding wheels rubbing Racey's "immaculate" 807:. Grand-Am struggled early on, but proved to be a formidable competitor to the ALMS in later years with a different philosophy based on lower-tech cars, most notably its prototype category 1112: 1176:

would have its own spec-racing series called Mustang Challenge, IMSA will sanction the championship with the organization of Ford themselves via the Ford Performance Racing School.

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and was run between 1991 up until 1995. Usually a televised support race to the GT races, running at 30 minutes, the series attracted some well-known professional drivers such as

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racing series that ran between 1982 and 1985. There was an East Coast (1982–1985) and West Coast series (1983–1985) as well as an overall championship. The series began with the

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as it was intended for sedans up to 100 c.i or 1600 cc., however was revised prior to the start of the 1970 season to include larger engines and presumably the name change to

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below 3.5 liters). This attempt failed, as did another in 1991, in which with chassis ballast penalties for turbocharged cars rendered them uncompetitive, except at Le Mans.

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that was the exclusive car for the first two seasons of the North America championship in 2013 and 2014. The series debuted in North America under IMSA sanction in 2013.

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As an aside, the "Baby Grand" moniker frequently applied to these IMSA Series was just that, a nickname. Around this same time a series that was officially designated

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to manage IMSA. IMSA's main series, the ALMS focused on manufacturer entries along with top privateers with the worldwide prestige of championship greatly increasing.

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against talented amateur drivers from varying degrees of professions, such as radio personality, police officer, law student, and racing simulations art designer for

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prompting IMSA to specify heavier weights than piston-engined cars and prohibited any modifications to the rotors and more importantly to intake and exhaust ports.

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class the following year, while retaining its sponsor until 1988. As with most now-defunct racing classes, there are revival races run for this category and the

759:(ALMS) which adopted the ACO's rulebook under PSCR sanction. The new series replaced the Professional Sports Car Racing championship as PSCR's headline series. 1071:, held since 2005. Drivers are allowed to race in two different classes, Platinum and Gold. The entries were allowed in the American Le Mans Series starting in 522: 221: 90: 3118: 1430: 4083: 2134:

In 2011, IMSA created the Ultra 94 Porsche Cup Challenge Canada by Yokohama, which races in support of major Canadian motorsports events including, the

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Once Renault was on board, John Bishop, President of IMSA, was approached to sanction the series. He was very skeptical at first. A meeting was held on

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The idea was to attract racers who did not have the budgets that were required in the GT category as well as an emphasis on compact sedans such as the

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World Sports Car team. These changes would lead to the departure of many of the executive board members. Evans was responsible for the name change to

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Most of the drivers that competed in the series were amateurs or semi-professional, whilst a few made their living out of competing in the series.

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title was reallocated to the former American Challenge cars. As a result, they would be run alongside GTS cars. This series started the careers of

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In June 2008, IMSA began sanction of the Atlantic Championship for two seasons. The series later came under SCCA Pro Racing sanction in 2012.

640: 3769: 3764: 900: 804: 275:(SCCA) staff member. Allen offered Bishop a management position on the SCCA Contest Board, which Bishop quickly accepted. Bishop moved to 2932: 3733: 3728: 795:

was cancelled halfway through its schedule due to a lack of competitors, a second attempt at a new sports car sanction body known as the

792: 2906: 860:). The announcement also confirmed that IMSA will manage and sanction the new series, operating as a wholly owned subsidiary of NASCAR. 536:

would stick with the new series, so he tried to ensure that the rules were not biased in their favor. He was in favor of looking after

564: 4047: 2877: 3102: 4052: 2394: 2305: 3140: 2822: 2847: 2504: 1649:. The preference was to have a roughly ten-race schedule, with each driver's best six finishes counting toward the Championship. 567:'s to compete as "special prototypes". They became the foundation of the newly formed Grand Touring Prototype (GTP) category in 3995: 3720: 3380: 3371: 3254: 2364: 796: 678: 590:(WEC), attempted to unite the two organizations by scrapping the existing formula and adopting IMSA rules. This did not please 320: 2596: 3859: 1790: 987: 3310: 2953: 2619: 2419: 1630:

for two seasons on the East Coast until its discontinuation in the US. The last two seasons, the East Coast Series ran the

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In 1985, IMSA would undergo a major rules reformat while still retaining its sponsor, therefore it was still known by its

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sedan. The Series' first year was actually 1970 with only two races, the inaugural race was at the newly constructed

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The Lamborghini Super Trofeo is a one-make series dedicated currently to multi-class racing, showcasing both the new

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The SCCA had now taken the big step up to professional racing. By 1962, the SCCA was tasked with managing major

2703: 2185: 2150: 594:, which was spending vast sums of money on engine development at the time. Porsche responded by boycotting the 3348: 2983: 949: 300: 3069: 3975: 2731: 2443: 2129: 2087:

in 1999, the series began as a support race to ALMS for women racers, using the race modified version of the

1699:; he took runner-up spot on his debut season in 1984 and would virtually dominate the series following that. 1334: 995: 728: 494: 328: 304: 35: 3284: 3985: 3959: 3954: 3949: 3944: 3939: 3934: 3929: 3924: 3919: 3914: 3909: 3904: 3899: 3894: 3889: 3829: 3824: 3819: 3814: 3809: 3804: 3799: 3794: 3789: 3784: 3779: 3774: 3620: 3615: 3610: 3605: 3600: 3595: 3590: 3585: 3580: 3575: 3570: 3565: 3560: 3555: 3550: 752: 587: 560: 472: 448: 296: 952:. For the 2016 season title sponsorship changed from Tudor to WeatherTech. This series currently features 521:

joined the IMSA GT Championship's schedule. Later that year, the organization gained recognition from the

4031: 3630: 2647: 1167: 919: 857: 828: 3006:"Grassroots Motorsports » Potent Pintos: These Drivers Have No Worries About Being Hit from Behind" 2209:

cars and L1 cars re-branded as MPC (Mazda Prototype Challenge). In 2023, the series was replaced by the

1368:. There were two classes from 1970 through 1973: Class A for under two liters and under 1.6 liters with 762:

Under tremendous pressure from team owners and management, Evans sold Professional Sports Car Racing to

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and helping them to become competitive. As European cars began to dominate, a new series was formed in

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In 1996 Slater sold the organization with previously accumulated debt to Roberto Muller (ex-CEO of

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that states a Knowledge editor's personal feelings or presents an original argument about a topic.

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not good, Bishop gained a vast amount of experience and began to show his qualities as a manager.

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was instrumental in the creation of the International Motor Sports Association. France founded

2928: 1961: 1634:. The West Coast Series started after the first successful year on the East Coast, but ran the 1275: 1152: 1058: 833: 776: 772: 719: 217: 1188:(owned by IMSA since January 2022) and IMSA were forming a new prototype-only series for both 2898: 2162: 2146: 2066: 1842: 1743: 768: 276: 22: 3747: 3389: 2272: 2019: 1896: 1718: 1536: 1456: 1210: 856:. In 2013 the unified series was announced as the Tudor United SportsCar Championship (now 845: 633: 402: 2873: 1033: 639:

In January 1989, the Bishops sold the company to Mike Cone and Jeff Parker, owners of the

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These are the series that are currently sanctioned and managed by the IMSA organization.

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factory before being transported to engineering development partner Flis Performance in

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At the end of the 1970 season, Bishop helped to establish the foundations of the FIA (

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This article is about the International Motor Sports Association. For other uses, see

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The series entered a sanctioning agreement with IMSA beginning with the 2021 season.

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employee, first became involved in motorsport in the 1950s when he met Dave Allen, a

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At the end of the 1987 season, Champion stepped down as sponsor and was replaced by

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The Porsche GT3 Cup Challenge USA by Yokohama is a one-make series dedicated to the

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and headed by a group of competitors and ex-IMSA personnel, including John Bishop,

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stock; Bishop owned the remaining 25%. The articles of incorporation were filed in

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sports cars. For the end of the 1970 season, he advertised a new championship for

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became the new sponsor of the GT series and the sedan series became known as the

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was revived as an alternative to Professional Sports Car Racing, involving the

533: 385: 281: 1583: 1417:. Many drivers would cut their teeth in this series such as Don Devendorf, of 4067: 2101: 2084: 1976: 1846: 1774: 1669: 1510: 800: 736: 498: 440: 436: 432: 428: 420: 412: 316: 183: 104: 2153:. The series was replaced by the Porsche Carrera Cup North America in 2021. 1002:. The series branded as the IMSA Continental Tire SportsCar Challenge, with 819:, this split was seen by many as being detrimental to the sport as a whole. 2176: 2053:

series is the North American version of the open-wheel series supported by

1984: 1965: 1945: 1823: 1811: 1689: 1684: 1414: 1369: 1310:) until they dropped sponsorship midway through 1975 (or 1976) and then by 979: 811:, giving larger fields and closer competition. Much like the split between 740: 694: 667: 614: 549: 416: 381: 3844: 2746:"IMSA to Replace Prototype Challenge with New Sprint Racing Class in 2023" 1357:. Infuriated, Feezell quit and never ran another IMSA RS race after that. 1010:

replaced Continental Tire as supplier and title sponsor. This series uses

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almost made a successful attempt to settle the dispute by announcing that

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also had a fair share of success within the series with cars such as the

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The IMSA VP Racing SportsCar Challenge is a development series featuring

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These are the series that were formerly run by the IMSA organization.

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The Ferrari Challenge is a one-make series dedicated currently to the

575:(Bishop was unhappy with the fuel consumption formula of the latter). 4000: 2447: 2420:"IMSA At 50: Part One, Overview & The 1970s – dailysportscar.com" 2218: 2117: 1975:

The series was not without controversy, mainly for the all-composite

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having been title sponsor since the 2010 season until 2018. In 2019

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cars. The series was introduced in 2023 as a replacement for the

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in 2014. One month following that announcement, then-director of

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In the spring of 1998, Don Panoz created a partnership with the

228:. It was started by John Bishop, a former executive director of 1815: 1785:, named for the former motosports-oriented television network. 1665: 1406: 1337:

on Memorial Day weekend; Rasey Feezell was first overall in an

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and other motorsports notables and had its inaugural season in

735:, to begin a 10-hour race in the spirit of Le Mans, dubbed the 647: 456: 365: 339: 237: 194: 3091:

http://www.wspr-racing.com/wspr/results/imsa/nf_imsa_home.html

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series run by the International Motor Sports Association. The

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In 1969, the tension and in-fighting caused Bishop to resign.

2954:"Autodelta Ti Super - Alfa Romeo Bulletin Board & Forums" 2620:"Decade after ALMS/GRAND AM merger, IMSA still arcing higher" 2495:- International Motor Racing Research Center / IMSA 1969-1989 2172: 1661: 1391: 1145: 873: 844:

In 2012, Don Panoz sold the Braselton, Georgia-based ALMS to

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IMSA continued to have success with its own Camel GT series.

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and fuel restrictions would be phased out by 1989 (excepting

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the technical rules for the newly formed Pro Racing program.

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The next year, 1971, the Series was revamped and became the

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was the support series for GRAND-AM's premier offering, the

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Cars during the 2020 TireRack.com Grand Prix at Road Atlanta

2823:"IMSA-Sanctioned Mustang Challenge Ready to Launch in 2024" 2720:. 18 June 2013. Archived from the original on May 27, 2023. 1577:

personal reflection, personal essay, or argumentative essay

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There are three classes, sorted in order from the highest

1267:'s 232 c.i. for the duration of the 'original' RS Series. 913: 331:(USAC). Bishop was also instrumental in founding the SCCA 327:

sports cars to recover races that had been taken by rival

252:. IMSA is owned by NASCAR, as a division of the company. 2221:

in their respective classes with shorter race distances.

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The genesis of the series was an association of drivers,

240:. Beginning in 2014, IMSA is the sanctioning body of the 666:, who also was an IndyCar owner and owner/driver of the 529:, but the race was cancelled because of the oil crisis. 3334: 2848:"HSR Prototype Challenge by IMSA Set to Launch in 2024" 2593:"Selected Sports Car Racing History:1997 shakeup in US" 2558:"IMSA wheels some of its people to NY, Indy dmyauthor=" 2505:

1975 – The First 24 Hours of Daytona Sanctioned by IMSA

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is the signature spec series for the Mazda Road to 24.

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and Barber departed to affiliate themselves with PSCR.

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sanctions events for mostly-stock and all-stock cars.

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and helped organize a merger between the ALMS and the

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1998 Professional SportsCar Racing Championship season

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In July 27th, 2023, Ford and IMSA announced that the

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and the FIA. IMSA was scheduled to sanction the 1974

1052: 3032:"Mazda Motorsports – Mazda Motorsports Development" 1928:, which was for higher-end sports cars such as the 1329:Road Course. Gaston Andrey was first overall in an 998:series upon the merger of the Rolex Series and the 244:, the premier series resulting from the merger of 3309:. eSportsRacer.com. 11 March 2011. Archived from 3249: 3247: 2327: 2325: 2323: 2296: 2294: 2292: 2290: 2288: 2286: 2124:Ultra 94 Porsche Cup Challenge Canada by Yokohama 4065: 2552: 2550: 967: 548:(AAGT) to give equal latitude to foreign cars. 2666: 1695:One notable driver to come from the series was 1179: 994:. In 2014 it became the support series for the 4079:Auto racing organizations in the United States 3244: 3054: 2383: 2335:Prototypes: The History of the IMSA GTP Series 2320: 2283: 1924:, sponsored by the sister brand of Firestone, 1766:and Kendall Oil were also associate sponsors. 1756:IMSA Firestone Firehawk Endurance Championship 1155:, where they are transformed into a race car. 708: 3860: 3356: 2586: 2584: 2582: 2547: 1184:On October 24th, 2023, it was announced that 723:American Le Mans Series at Road America, 2007 584:Fédération Internationale du Sport Automobile 376:The first race to be organized by IMSA was a 3141:"Parker Johnstone - A Sponsors Dream Driver" 2521: 2519: 2517: 2515: 2513: 2507:- International Motor Racing Research Center 1282:, was one of these 'crossover' competitors. 905: 901:List of IMSA SportsCar Championship circuits 3874: 3196: 3194: 3192: 2984:"The history of the Trans-AM 2.5 Challenge" 2493:How Sebring Was Saved From Oblivion in 1973 2331: 2266: 2156: 1100: 559:In the same year, Bishop invited a pair of 16:North American auto racing sanctioning body 4084:Companies based in Volusia County, Florida 3867: 3853: 3363: 3349: 2648:"Atherton to leave IMSA after 2019 season" 2590: 2579: 2332:Martin, J. A.; Wells, Ken (January 2001). 1215: 1075:, in the GTC Class. The series became the 936:was created in 2014 through the merger of 799:was created with full support of NASCAR's 34: 2510: 1606:Learn how and when to remove this message 1161: 1140:The MX-5 Cup race cars start as complete 469:Fédération Internationale de l'Automobile 4089:Sports organizations established in 1969 3200: 3189: 2796: 2639: 2060: 1656:racers from the Southeast and Northeast 923: 832: 718: 406: 352: 3231:"International Motor Sport Association" 2646:Pruett, Marshall (September 19, 2019). 1341:sedan; the second race was held at the 1235:was short-lived and the genesis of the 1204: 978:The IMSA Michelin Pilot Challenge is a 914:IMSA WeatherTech SportsCar Championship 319:. Bishop helped to create the USRRC ( 262: 56:North America; United States and Canada 4074:International Motor Sports Association 4066: 3996:International Motor Sports Association 3372:International Motor Sports Association 3307:"Prototype Lites: 2011 Season Preview" 2672: 2645: 2525: 2196:WX10 and WR1000 chassis with either a 2074: 1916:IMSA Bridgestone Supercar Championship 1737: 1390:The series became dominated mostly by 797:Grand American Road Racing Association 679:United States Road Racing Championship 632:In 1987, John Bishop had to undergo a 483:cars with equity between competitors. 321:United States Road Racing Championship 206:International Motor Sports Association 29:International Motor Sports Association 3848: 3344: 2778:. John Dagys Media, LLC. July 1, 2022 2698: 2696: 2673:Pruett, Marshall (October 15, 2019). 2617: 1791:Continental Tire Sports Car Challenge 1475: 1325:The initial race held was in 1969 at 988:Continental Tire Sports Car Challenge 493:(GT) season introduced international 357:Original logo, used from 1969 to 2013 315:. The club was also involved in the 2854:. John Dagys Media. October 24, 2023 2414: 2412: 2365:"James Kimberly, Kleenex heir, dies" 2302:"IMSAblog: A tribute to John Bishop" 2002: 1983:in 1991, despite having a 2.2 liter 1879: 1754:; therefore, the series was renamed 1701: 1559: 1519: 1439: 1193:and the Classic 12 Hour at Sebring. 1082: 823:Purchase by NASCAR and reunification 3203:Showroom Stock Race Car Preparation 1555: 1302:, in 1971. Originally sponsored by 946:Tudor United SportsCar Championship 743:facility. After the success of the 13: 2693: 2654:. Racer Media & Marketing, Inc 2471:. Racing Sports Cars. 1991-02-06. 2362: 2211:IMSA VP Racing SportsCar Challenge 2038: 1680: 1028:IMSA VP Racing SportsCar Challenge 1022:IMSA VP Racing SportsCar Challenge 934:WeatherTech SportsCar Championship 889:Rolex Monterey Motorsports Reunion 242:WeatherTech SportsCar Championship 14: 4110: 3328: 2752:. Hearst Autos, Inc. July 1, 2022 2681:. Racer Media & Marketing Inc 2675:"Doonan named new IMSA president" 2618:Olson, Jeff (September 2, 2022). 2591:Smotherman, Mark (24 June 2007). 2409: 1922:Bridgestone Supercar Championship 1752:Firestone Tire and Rubber Company 1196: 1122: 1077:Porsche Carrera Cup North America 1053:Porsche Carrera Cup North America 641:IMSA Grand Prix of St. Petersburg 571:, with separate rules similar to 3991:FIA World Endurance Championship 2797:Gauthier, Michael (2023-07-27). 2531:Endurance Racing 1981–1991 2267:@bobpockrass (20 October 2019). 2108:, and Italian Audi factory team 2006: 1883: 1705: 1638:which had just been introduced. 1564: 1523: 1443: 1133:The Mazda MX-5 Cup presented by 627: 220:, under the jurisdiction of the 193: 182: 3299: 3273: 3223: 3177:from the original on 2016-03-03 3159: 3133: 3121:from the original on 2016-09-12 3107: 3096: 3084: 3072:from the original on 2007-03-18 3042:from the original on 2016-03-04 3024: 2998: 2976: 2964:from the original on 2017-05-10 2946: 2935:from the original on 2016-03-03 2921: 2909:from the original on 2016-03-04 2899:"IMSA International Sedan race" 2891: 2880:from the original on 2014-12-28 2866: 2840: 2815: 2790: 2764: 2738: 2710: 2611: 2599:from the original on 2008-10-13 2568:from the original on 2010-12-09 2498: 2486: 2475:from the original on 2016-03-03 2397:from the original on 2011-09-30 2371:from the original on 2014-12-01 2338:(1st ed.). United States: 2308:from the original on 2011-07-24 2248:from the original on 2017-07-04 1692:. 51 Le Cars started the race. 1274:(better and later known as the 2461: 2436: 2356: 2260: 2230: 1988:Haywood in a factory Porsche, 1117:Gallardo LP 570-4 Super Trofeo 1079:beginning in the 2021 season. 950:Daytona International Speedway 672:Professional Sports Car Racing 586:(FISA), the organizers of the 1: 3390:Camel GT / Exxon Championship 2903:www.ultimateracinghistory.com 2224: 2175:Prototype Lites presented by 2130:IMSA GT3 Cup Challenge Canada 1387:'s Two-Five Challenge rules. 1335:Summit Point Motorsports Park 1320:Champion Spark Plug Challenge 1113:Huracán LP 620-2 Super Trofeo 996:United SportsCar Championship 968:IMSA Michelin Pilot Challenge 883:In January 2022, IMSA bought 731:(ACO), the organizers of the 348: 329:United States Automobile Club 280:organization's president and 3986:Intercontinental Le Mans Cup 3255:"Giovanna Amati - Biography" 2186:Élan Motorsport Technologies 2151:Grand Prix de Trois-Rivières 1488:), otherwise abbreviated as 1349:won in a specially prepared 1263:for the Class which was the 1180:IMSA HSR Prototype Challenge 1067:, similar in concept to the 944:. It debuted under the name 848:, in turn owned directly by 588:World Endurance Championship 532:Bishop did not believe that 473:World Championship for Makes 297:World Championship for Makes 7: 3721:US Road Racing Championship 3631:IMSA SportsCar Championship 1243:Road Course was designated 1168:IMSA Ford Mustang Challenge 920:IMSA SportsCar Championship 894: 858:IMSA SportsCar Championship 829:IMSA SportsCar Championship 709:American Le Mans Series era 619:naturally aspirated engines 74:; 55 years ago 10: 4115: 3976:Automobile Club de l'Ouest 2562:Tampa Bay Business Journal 2160: 2127: 2064: 2042: 1658:Sports Car Club of America 1652:ARR's members were mostly 1380:Sports Car Club of America 1339:Alfa Romeo Giulia TI Super 1285: 1253:International Sedan Series 1245:International Sedan Series 1233:International Sedan Series 1226: 1219: 1208: 1165: 1126: 1104: 1086: 1056: 1025: 971: 948:on January 25–26, 2014 at 917: 898: 826: 729:Automobile Club de L'Ouest 712: 683:Sports Car Club of America 546:All American Grand Touring 461:Mid-Ohio Sports Car Course 400: 273:Sports Car Club of America 255: 216:sanctioning body based in 20: 4040: 4009: 3968: 3882: 3746: 3710: 3629: 3541: 3388: 3379: 3103:My Renault Racing History 2730:: CS1 maint: unfit URL ( 1316:Goodyear Radial Challenge 1308:Goodrich Radial Challenge 906:Current sanctioned series 885:Historic Sportscar Racing 396: 284:heir, James H. Kimberly. 191: 180: 167: 162: 137: 127: 119: 111: 100: 86: 68: 60: 52: 42: 33: 3281:"A Sporting Life page 2" 3201:McKnight, Nigel (1991). 2184:. The L1 class featured 2167:IMSA Prototype Challenge 2157:IMSA Prototype Challenge 2081:Women's Global GT Series 1758:, commonly known as the 1486:Kelly American Challenge 1249:International 100 Series 1107:Lamborghini Super Trofeo 1101:Lamborghini Super Trofeo 1042:IMSA Prototype Challenge 974:Michelin Pilot Challenge 838:2014 24 Hours of Daytona 423:) leads eventual winner 299:rounds, particularly at 3876:American Le Mans Series 3757:Rolex Sports Car Series 3543:American Le Mans Series 2188:DP02 cars powered by a 2182:American Le Mans Series 1331:Alfa Romeo Giulia Super 1327:Talladega Superspeedway 1241:Talladega Superspeedway 1222:American Le Mans Series 1216:American Le Mans Series 1000:American Le Mans Series 992:Rolex Sports Car Series 942:American Le Mans Series 870:Rolex Sports Car Series 866:American Le Mans Series 854:Rolex Sports Car Series 757:American Le Mans Series 745:inaugural Petit Le Mans 715:American Le Mans Series 552:cars were permitted in 459:Grand Prix of Ohio, at 250:American Le Mans Series 3171:www.theautochannel.com 2446:. WSRP. Archived from 2424:www.dailysportscar.com 2363:By (2 February 1994). 1962:Elliot Forbes-Robinson 1847:Dodge Daytona Turbo II 1643:Associated Road Racers 1586:by rewriting it in an 1174:7th Generation Mustang 1162:Ford Mustang Challenge 1153:Daytona Beach, Florida 1059:IMSA GT3 Cup Challenge 929: 841: 739:to be held at Panoz's 724: 464: 358: 218:Daytona Beach, Florida 212:) is a North American 2994:on February 24, 2014. 2929:"1970 IMSA - round 2" 2874:"1969 IMSA - round 1" 2827:IMSA Official Website 2444:"IMSA GT 1991 season" 2340:David Bull Publishing 2192:, and L2 consists of 2163:Mazda Prototype Lites 2147:Grand Prix of Mosport 2067:Atlantic Championship 2061:Atlantic Championship 1920:IMSA also hosted the 1843:Pontiac Sunbird Turbo 927: 836: 827:Further information: 755:, to be known as the 722: 713:Further information: 513:Radial Challenge. In 410: 401:Further information: 356: 277:Westport, Connecticut 23:IMSA (disambiguation) 2564:. January 20, 1997. 2469:"Racing Sports Cars" 2079:Originally began as 1306:(therefore known as 1211:IMSA GT Championship 1205:IMSA GT Championship 938:Grand-Am Road Racing 846:Grand-Am Road Racing 634:heart bypass surgery 403:IMSA GT Championship 335:series and the SCCA/ 263:John Bishop and SCCA 246:Grand-Am Road Racing 3981:24 Hours of Le Mans 3117:. 15 January 2014. 2139:Canadian Grand Prix 2075:Panoz Racing Series 1738:IMSA Showroom Stock 1431:IMSA Showroom Stock 1343:Montgomery Speedway 1276:Goody's Dash Series 1260:Radial Sedan Series 1237:Radial Sedan Series 1069:Porsche Carrera Cup 733:24 Hours of Le Mans 611:Jean-Marie Balestre 596:24 Hours of Le Mans 527:24 Hours of Daytona 519:12 Hours of Sebring 471:) "J appendix" for 30: 3337:- Official Website 2342:. pp. 13–14. 2143:Honda Indy Toronto 2018:. You can help by 1950:Hans-Joachim Stuck 1938:Chevrolet Corvette 1934:Lotus Esprit X180R 1895:. You can help by 1855:Volkswagen Corrado 1851:Honda Civic CRX Si 1800:Grand Sport Class 1717:. You can help by 1588:encyclopedic style 1575:is written like a 1535:. You can help by 1482:American Challenge 1476:American Challenge 1455:. You can help by 984:touring car racing 930: 868:with the Grand-Am 842: 725: 465: 373:on June 23, 1969. 359: 28: 4094:Sports car racing 4061: 4060: 3842: 3841: 3838: 3837: 3742: 3741: 3706: 3705: 2304:. 23 April 2006. 2213:, which featured 2036: 2035: 1930:Porsche 911 Turbo 1913: 1912: 1735: 1734: 1616: 1615: 1608: 1553: 1552: 1473: 1472: 1300:Baby Grand Series 1089:Ferrari Challenge 1083:Ferrari Challenge 809:Daytona Prototype 793:1999 USRRC season 777:GT3 Cup Challenge 747:as a part of the 656:portfolio manager 609:, FISA president 419:(both driving an 214:sports car racing 202: 201: 138:Vice president(s) 4106: 3869: 3862: 3855: 3846: 3845: 3753: 3752: 3717: 3716: 3386: 3385: 3365: 3358: 3351: 3342: 3341: 3323: 3322: 3320: 3318: 3313:on 26 March 2012 3303: 3297: 3296: 3294: 3292: 3283:. Archived from 3277: 3271: 3270: 3268: 3266: 3257:. Archived from 3251: 3242: 3241: 3239: 3237: 3227: 3221: 3220: 3205:(1st ed.). 3198: 3187: 3186: 3184: 3182: 3163: 3157: 3156: 3154: 3152: 3143:. Archived from 3137: 3131: 3130: 3128: 3126: 3111: 3105: 3100: 3094: 3088: 3082: 3081: 3079: 3077: 3058: 3052: 3051: 3049: 3047: 3028: 3022: 3021: 3019: 3017: 3008:. Archived from 3002: 2996: 2995: 2990:. Archived from 2980: 2974: 2973: 2971: 2969: 2950: 2944: 2943: 2941: 2940: 2925: 2919: 2918: 2916: 2914: 2895: 2889: 2888: 2886: 2885: 2870: 2864: 2863: 2861: 2859: 2852:sportscar365.com 2844: 2838: 2837: 2835: 2834: 2819: 2813: 2812: 2810: 2809: 2794: 2788: 2787: 2785: 2783: 2776:sportscar365.com 2768: 2762: 2761: 2759: 2757: 2742: 2736: 2735: 2729: 2721: 2714: 2708: 2707: 2700: 2691: 2690: 2688: 2686: 2670: 2664: 2663: 2661: 2659: 2643: 2637: 2636: 2634: 2632: 2615: 2609: 2608: 2606: 2604: 2588: 2577: 2576: 2574: 2573: 2554: 2545: 2544: 2523: 2508: 2502: 2496: 2490: 2484: 2483: 2481: 2480: 2465: 2459: 2458: 2456: 2455: 2440: 2434: 2433: 2431: 2430: 2416: 2407: 2406: 2404: 2402: 2393:. January 2006. 2387: 2381: 2380: 2378: 2376: 2360: 2354: 2353: 2329: 2318: 2317: 2315: 2313: 2298: 2281: 2280: 2264: 2258: 2257: 2255: 2253: 2234: 2202:Suzuki GSX-R1000 2190:Mazda MP2 engine 2031: 2028: 2010: 2003: 1908: 1905: 1887: 1880: 1873:Pontiac Grand Am 1869:Audi 100 Quattro 1820:Ford Thunderbird 1808:Pontiac Trans Am 1804:Chevrolet Camaro 1771:Dorsey Schroeder 1730: 1727: 1709: 1702: 1697:Parker Johnstone 1682: 1636:Renault Alliance 1611: 1604: 1600: 1597: 1591: 1568: 1567: 1560: 1556:IMSA Renault Cup 1548: 1545: 1527: 1520: 1468: 1465: 1447: 1440: 1425:, of Kudzu, and 1318:), and later as 1149:Hiroshima, Japan 1135:BFGoodrich Tires 1012:TCR Touring Cars 1004:Continental Tire 507:Camel Cigarettes 495:endurance racing 411:(front to rear) 198: 197: 187: 186: 176: 173: 171: 163:Official website 155: 148: 82: 80: 75: 38: 31: 27: 4114: 4113: 4109: 4108: 4107: 4105: 4104: 4103: 4064: 4063: 4062: 4057: 4036: 4005: 3964: 3878: 3873: 3843: 3834: 3738: 3702: 3625: 3537: 3375: 3369: 3331: 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399: 362:Bill France Sr. 351: 267:John Bishop, a 265: 258: 234:Bill France Sr. 192: 181: 168: 158: 153: 152: 146: 145: 78: 76: 73: 26: 17: 12: 11: 5: 4112: 4102: 4101: 4096: 4091: 4086: 4081: 4076: 4059: 4058: 4056: 4055: 4050: 4044: 4042: 4038: 4037: 4035: 4034: 4029: 4024: 4013: 4011: 4007: 4006: 4004: 4003: 3998: 3993: 3988: 3983: 3978: 3972: 3970: 3966: 3965: 3963: 3962: 3957: 3952: 3947: 3942: 3937: 3932: 3927: 3922: 3917: 3912: 3907: 3902: 3897: 3892: 3886: 3884: 3880: 3879: 3872: 3871: 3864: 3857: 3849: 3840: 3839: 3836: 3835: 3833: 3832: 3827: 3822: 3817: 3812: 3807: 3802: 3797: 3792: 3787: 3782: 3777: 3772: 3767: 3761: 3759: 3750: 3744: 3743: 3740: 3739: 3737: 3736: 3731: 3725: 3723: 3714: 3708: 3707: 3704: 3703: 3701: 3700: 3693: 3686: 3681: 3676: 3671: 3666: 3661: 3656: 3651: 3646: 3641: 3635: 3633: 3627: 3626: 3624: 3623: 3618: 3613: 3608: 3603: 3598: 3593: 3588: 3583: 3578: 3573: 3568: 3563: 3558: 3553: 3547: 3545: 3539: 3538: 3536: 3535: 3530: 3525: 3520: 3515: 3510: 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1613: 1572: 1570: 1563: 1557: 1554: 1551: 1550: 1530: 1528: 1477: 1474: 1471: 1470: 1450: 1448: 1396:rotary-powered 1314:(becoming the 1292:IMSA RS Series 1287: 1284: 1228: 1225: 1220:Main article: 1217: 1214: 1209:Main article: 1206: 1203: 1198: 1197:Defunct series 1195: 1181: 1178: 1166:Main article: 1163: 1160: 1142:MX-5 road cars 1129:Mazda MX-5 Cup 1127:Main article: 1124: 1123:Mazda MX-5 Cup 1121: 1105:Main article: 1102: 1099: 1087:Main article: 1084: 1081: 1057:Main article: 1054: 1051: 1026:Main article: 1023: 1020: 972:Main article: 969: 966: 918:Main article: 915: 912: 907: 904: 899:Main article: 896: 893: 824: 821: 710: 707: 629: 626: 435:, followed by 398: 395: 386:Pocono Raceway 350: 347: 282:Kimberly-Clark 264: 261: 257: 254: 200: 199: 189: 188: 178: 177: 165: 164: 160: 159: 157: 156: 149: 141: 139: 135: 134: 131: 125: 124: 121: 117: 116: 113: 109: 108: 102: 98: 97: 88: 84: 83: 70: 66: 65: 62: 58: 57: 54: 50: 49: 44: 40: 39: 15: 9: 6: 4: 3: 2: 4111: 4100: 4097: 4095: 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St. James 2082: 2072: 2068: 2058: 2056: 2052: 2046: 2030: 2021: 2017: 2014:This section 2012: 2009: 2005: 2004: 2001: 1999: 1995: 1991: 1986: 1982: 1978: 1977:Consulier GTP 1973: 1971: 1967: 1963: 1959: 1955: 1951: 1947: 1943: 1939: 1935: 1931: 1927: 1923: 1907: 1898: 1894: 1891:This section 1889: 1886: 1882: 1881: 1874: 1870: 1866: 1863: 1862: 1860: 1856: 1852: 1848: 1844: 1841: 1840: 1838: 1833: 1829: 1825: 1821: 1817: 1813: 1809: 1805: 1802: 1801: 1799: 1798: 1797: 1794: 1792: 1786: 1784: 1782: 1776: 1775:John Andretti 1772: 1767: 1765: 1761: 1757: 1753: 1748: 1745: 1729: 1720: 1716: 1713:This section 1711: 1708: 1704: 1703: 1700: 1698: 1693: 1691: 1686: 1681:April 4, 1981 1677: 1673: 1671: 1667: 1663: 1659: 1655: 1650: 1648: 1644: 1639: 1637: 1633: 1629: 1625: 1621: 1610: 1607: 1599: 1589: 1585: 1579: 1578: 1573:This section 1571: 1562: 1561: 1547: 1538: 1534: 1531:This section 1529: 1526: 1522: 1521: 1518: 1516: 1512: 1511:Lyn St. James 1508: 1504: 1500: 1496: 1491: 1487: 1483: 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In 222:ACCUS 172:.imsa 91:ACCUS 43:Sport 4021:list 3960:2013 3955:2012 3950:2011 3945:2010 3940:2009 3935:2008 3930:2007 3925:2006 3920:2005 3915:2004 3910:2003 3905:2002 3900:2001 3895:2000 3890:1999 3830:2013 3825:2012 3820:2011 3815:2010 3810:2009 3805:2008 3800:2007 3795:2006 3790:2005 3785:2004 3780:2003 3775:2002 3770:2001 3765:2000 3734:1999 3729:1998 3712:SCCA 3697:2025 3690:2024 3684:2023 3679:2022 3674:2021 3669:2020 3664:2019 3659:2018 3654:2017 3649:2016 3644:2015 3639:2014 3621:2013 3616:2012 3611:2011 3606:2010 3601:2009 3596:2008 3591:2007 3586:2006 3581:2005 3576:2004 3571:2003 3566:2002 3561:2001 3556:2000 3551:1999 3533:1998 3528:1997 3523:1996 3518:1995 3513:1994 3508:1993 3503:1992 3498:1991 3493:1990 3488:1989 3483:1988 3478:1987 3473:1986 3468:1985 3463:1984 3458:1983 3453:1982 3448:1981 3443:1980 3438:1979 3433:1978 3428:1977 3423:1976 3418:1975 3413:1974 3408:1973 3403:1972 3398:1971 3381:IMSA 3319:2011 3293:2017 3267:2017 3238:2017 3211:ISBN 3183:2017 3153:2017 3127:2017 3078:2017 3048:2017 3018:2017 2970:2017 2915:2017 2860:2023 2784:2023 2758:2023 2732:link 2687:2019 2660:2019 2633:2024 2605:2008 2535:ISBN 2403:2008 2377:2017 2344:ISBN 2314:2008 2254:2017 2242:IMSA 2217:and 2215:LMP3 2207:LMP3 2171:The 2165:and 2100:and 2049:The 1968:and 1944:and 1773:and 1618:The 1513:and 1480:The 1435:SCCA 1413:and 1403:RX-3 1401:and 1399:RX-2 1290:The 1231:The 1190:LMP3 1073:2009 1036:and 1034:LMP3 1014:and 982:and 958:LMP2 954:LMDh 932:The 805:2000 753:1999 658:for 607:1987 580:1984 569:1981 554:1977 542:1975 515:1973 503:1972 488:1971 486:The 479:and 415:and 380:and 337:CASC 311:and 230:SCCA 210:IMSA 204:The 174:.com 79:1969 72:1969 64:IMSA 2219:GT4 2200:or 2055:BMW 2022:. 1992:'s 1899:. 1853:, 1783:Cup 1778:as 1721:. 1683:at 1539:. 1490:AAC 1459:. 1411:510 1394:'s 1186:HSR 1049:. 1047:FIA 1038:GT4 1016:GT4 962:GT3 817:IRL 605:In 598:of 578:In 497:to 443:), 236:of 226:FIA 170:www 129:CEO 95:FIA 4070:: 3246:^ 3209:. 3191:^ 3173:. 3169:. 3068:. 3064:. 3038:. 3034:. 2986:. 2960:. 2956:. 2931:. 2905:. 2901:. 2876:. 2850:. 2825:. 2801:. 2774:. 2748:. 2728:}} 2724:{{ 2695:^ 2677:. 2650:. 2622:. 2595:. 2581:^ 2560:. 2549:^ 2512:^ 2422:. 2411:^ 2367:. 2322:^ 2285:^ 2244:. 2240:. 2120:. 1964:, 1960:, 1956:, 1952:, 1940:, 1936:, 1932:, 1871:, 1867:, 1849:, 1845:, 1830:, 1826:, 1822:, 1818:, 1810:, 1806:, 1793:. 1668:, 1664:, 1517:. 1509:, 1505:, 1501:, 1497:, 1322:. 1255:. 956:, 891:. 697:, 693:, 689:, 662:, 582:, 556:. 505:, 307:, 303:, 4023:) 4019:( 3868:e 3861:t 3854:v 3364:e 3357:t 3350:v 3321:. 3295:. 3269:. 3240:. 3219:. 3185:. 3155:. 3129:. 3080:. 3050:. 3020:. 2972:. 2942:. 2917:. 2887:. 2862:. 2836:. 2811:. 2786:. 2760:. 2734:) 2706:. 2689:. 2662:. 2635:. 2607:. 2575:. 2543:. 2482:. 2457:. 2432:. 2405:. 2379:. 2352:. 2316:. 2279:. 2271:( 2256:. 2029:) 2025:( 1906:) 1902:( 1728:) 1724:( 1609:) 1603:( 1598:) 1594:( 1590:. 1546:) 1542:( 1466:) 1462:( 451:( 427:( 208:( 93:- 81:) 25:.

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