Sprint cars are open-wheel, open-cockpit machines built for short oval tracks, historically run on both dirt and paved surfaces. The 360 designation refers to the engine displacement ceiling of 360 cubic inches (5.9 liters), as opposed to the 410 cubic inch (6.7-liter) engines used in the premier class. At up to 775 horsepower in the 360 class versus over 900 horsepower in the 410 class, the performance differential is meaningful but not so large as to make 360 sprint car racing any less competitive or technically demanding.
Like their 410 counterparts, 360 sprint cars carry the traditional sprint car configuration: no conventional transmission, an in-or-out gearbox, a quick-change rear differential, and no electrical starter system — requiring a push start from a truck or quad before each race. Fuel is methanol, delivered by mechanical fuel injection.
The 360 class exists in both winged and wingless configurations. Winged 360 sprint cars run a roof wing and nose wing that generate downforce to increase cornering speeds and improve stability. The United Racing Company (URC), operating primarily in Pennsylvania, New Jersey, and Delaware, is one prominent sanctioning body for winged 360 sprint cars. The American Sprint Car Series (ASCS) also sanctions 360 winged competition at the regional and national level; ASCS winged 360 cars are commonly referred to simply as "360s" by fans and competitors.
Wingless 360 sprint cars remove the aerodynamic package, creating a different driving environment with less grip and higher demands on driver technique through corners. The USAC sanctions wingless 360 sprint car racing across several regional divisions, including the USAC East Coast, USAC Southwest, and USAC West Coast series. Some local tracks specify 360 engines with further cost-limiting measures such as steel engine blocks rather than aluminum.
The 360 class functions as the most common sprint car racing category at the local and regional level across the United States. Many sprint car tracks run 360 sprint car programs as their premier weekly class, with the 410 class appearing at those same venues only for special events. This structure gives teams running 360 equipment a full weekly racing schedule rather than a limited schedule of special events.
For drivers, the 360 class is frequently the step between smaller starter classes and full 410 competition. The mechanical fundamentals — managing a car without a traditional transmission, understanding wing angle adjustments, reading dirt track conditions — are identical between the two classes. Drivers who demonstrate consistent speed in 360 competition are natural candidates for 410 opportunities.
Australia and New Zealand both run the 360 cubic inch class alongside the 410 formula, with separate Australian Championship meetings held for each displacement. This parallel structure ensures that teams competing with smaller-engine equipment have their own national championship pathway rather than being overshadowed by the higher-horsepower 410 class.
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