(go kart) Mini sprint- 600-1200cc motorcycle engines. Usually utilize a top wing. Winged sprint- 410ci, 360ci engine, or 305ci engines. The top wing helps these fast and powerful racecars with downforce. Non-wing sprint car Silver crown Midget (speedcar) Three quarter midget (TQ) Quarter midget 600 and 270 micro sprints Open wheel sanctioning bodies include: USAC - The United States Automobile Club World of Outlaws Sprint Cars (410ci engine national touring series) All Star Circuit of Champions (410ci engine upper Midwest, mid-Atlantic and Atlantic touring series) National Sprint League (410ci engine Midwest touring series) American Sprint Car Series (ASCS) (360ci engine national touring series) United Sprint Car Series (USCS) (360ci engine mid south and south touring series) MOWA (410ci engine Midwest touring series) POWRi (midgets and mini sprints) Popular chassis manufacturers around the country for winged sprint cars are Eagle, Maxim, J&J, Triple X, and GF1. There are also several engine builders that build both 410ci and 360ci engines for traveling sprint car teams. Speedway, Kistler, Gaerte, Wesmar, Shaver, Don Ott Racing Engines, and Fisher Racing Engines are the more popular engine builders. Modified cars Modified cars are a hybrid of open wheel cars and stock cars. This class of car has the racing characteristics of a stock car. The rear wheels are covered by fenders but the front wheels are left exposed. There are sanctioning bodies that control the rules for this class at most tracks. Each sanctioning body has their own set of guidelines provided in an annual rule book and their own registration fees. Sanctioning bodies include: Super DIRTcar Series IMCA (International Motor Contest Association) UMP (United Midwestern Promoters) USRA (United States Racing Association) USMTS (United States Modified Touring Series) WISSOTA (WISSOTA Promoters' Association) TSMA (Tri-State Modified Association) Full-bodied cars Full-bodied cars, sometimes referred to as stock cars, are vehicles that, unlike open-wheel cars, have fenders covering all wheels. Full-bodied cars can vary from full tube frame chassis and aluminum bodied late models to automobiles manufactured by the major automakers with certain modifications as allowed for each class. There are several general types: Pure Stock These are Full-bodied cars with very few changes allowed from the factory models sold for general use on the streets. Changes can be limited to a certain type tire, making some parts of the car stronger to withstand the punishment of racing and so forth. All cars used on the race track are