Sportscar Vintage Racing Association
The Sportscar Vintage Racing Association (SVRA) is an American automobile club and sanctioning body that supports vintage racing in the United States. The organization was founded in 1981, and is regarded as the premier vintage racing organization in the U.S. Along with conducting official race meets, SVRA events also include car shows, auto auctions, vendors, and other activities promoting the "car culture". The organization encourages the restoration, preservation, and racing of historically significant automobiles that are configured as closely as possible to their original design and construction. Venues. The 2021 SVRA season comprises 17 events at  road courses across the country: Former venues include: The SVRA runs a "triple crown" for historic sports cars, the Vintage Race of Champions. These three events are the organisation's marquee events and the VROC, featuring pro-am fields, is featured in these three venues: The VROC is suspended for 2021 because of fan restrictions amid the COVID-19 pandemic. Race car groups. The SVRA currently recognizes 12 car groups, with criteria based on car type, age, engine displacement, horsepower, original class placement, and other various technical specifications. The organization largely requires participants to keep the cars as true to their  original form as possible, however, certain modern safety modifications are required. Group 1. Recognized small displacement production sports cars and sedans Examples: Group 2. Pre-1973 Formula cars. Examples: Group 3. Recognized series-produced sports cars and sedans in production prior to 1972. Examples: Group 4. Limited produced sports cars, racing "specials" and GT cars built or in production prior to 1960. Examples: Group 5. World Sports Car Championship and World Manufacturer's Championship GT's and prototypes as raced between 1960 and 1972. USRRC sports cars and Can-Am cars as raced before 1969 with invited later models. Front engine  specials as raced after 1959. Examples: Group 6. Selected big-bore production sports cars and sedans through 1972. This is the group that is utilized for the Vintage Race of Champions (VROC) pro-am series, which includes the Indy Legends Charity Pro–Am race at the Indianapolis Motor Speedway. Examples: Group 7. World Championship for Makes sports cars as raced after 1970 on slicks. Under 2.0-liter sports cars as raced after 1972. Center-seat Can-Am cars. SCCA, ASR & BSR, Sports 2000. Examples: Group 8. Recognized series-produced sports cars and sedans in production prior to 1979, and later  cars by invitation. Examples: Group 9. Wings and slicks formula cars complying with SVRA post-1973 formula car regulations. Examples: Group 10. Selected IMSA and FIA/GT sports cars and sedans as raced between 1973 and 1999. NASCAR Cup/Busch series stock cars. Production-based contemporary cars. Examples: Group 11. GTP/Group C, ALMS, PSCR, WSC, Grand Am, and WeatherTech Championship prototype cars as raced from 1981 to five years before the current date. SVRA may permit cars that are deemed obsolete by rules, such as the 2003-16 Daytona Prototype chassis, made obsolete after the 2016 season, before the five -year rule is applied. Tube frame Trans Am and IMSA GTS, GTO and FIA-GT cars as raced from 1981 to specified cut-off date (five years, but SVRA may permit cars once their GT3/GT4 homologation has expired to participate). Production-based contemporary cars based on performance history as raced from 1999 to 5 years prior to calendar year or homologation has expired (car cannot be used in current sportscar racing). Can-Am and A Sports Racing cars as raced after 1967 on slicks, over 6.0 Liters. Center-seat Can-Am cars on slicks over 5.0 Liters. Examples : Group 12. Select GT sports cars and sedans raced between 1973 and 5 years prior to today's date or when homlogation has expired. These are Production-based cars such as the IMSA Michelin Pilot Challenge or any other stock / prepared racing series once their homologation has expired. Early IMSA GTO and GTU small bore cars will be accepted on an individual basis. SVRA may permit a car no longer permitted in the Pilot Challenge or other similar series to participate in SVRA without regards to the five-year rule. Examples: United States Vintage Racing National Championship. On October 25–27 , 2013, SVRA held the inaugural United States Vintage Racing National Championship at the Circuit of the Americas near Austin, Texas. 500 vintage race cars competed in twelve classes with a national champion crowned in each class.