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Sprint Cars are powered by a naturally-aspirated, methanol-injected overhead valve V-8 engines; with a displacement of 410 cubic inches (6.7L) and capable of engine speeds approaching 9000 rpm. [3] A lower-budget and very popular class of sprint cars uses 360-cubic-inch (5.9L) engines that produce approximately 700 horsepower (520 kW). [4] [5 ...
Sprint cars have very high power-to-weight ratios, with weights of approximately 1,400 pounds (640 kg) (including the driver) [2] and power outputs of over 900 horsepower (670 kW), [3] which give them a power-to-weight ratio besting that of contemporary F1 cars. [4]
Sprint cars weight 1,475 pounds and have 410 cu in engines that produce 900 horsepower. A typical Midget weighs about 1,000 pounds and produces up to 350 horsepower from its four-cylinder engine. [3] They are intended to be driven for races of relatively short distances, usually 2.5 to 25 miles (4 to 40 km).
Small-block engines, in the 358 cubic inch range, were exempt from the plates; the first car to race with a small-block engine was Dick Brooks at the 1971 Daytona 500, where he ran a 1969 Dodge Charger Daytona with a 305 CID engine. The transition period lasted until 1974, when the current 358 cubic-inch (5870cc) limit was imposed and NASCAR ...
A WoO Sprint Car must weigh at least 1,425 pounds (646kg) with the driver in the car. [9] The mandated 410-cubic inch engine (6.7 litre) produces over 900 horsepower, uses mechanical fuel injection and must run on methanol fuel.
The first weekly races were held at the Knoxville Raceway in 1954. After internal issues with the sanctioning body—the Southern Iowa Stock Car Racing Association—in 1956, Marion Robinson of Des Moines, Iowa was appointed as race promoter. During Robinson's tenure, the cars progressed from stock cars to modifieds to supermodifieds to sprint ...
In 1966, General Motors designed a special 302 cu in (4.9 L) engine for the production Z/28 Camaro in order for it to meet the Sports Car Club of America Trans-Am Series road racing rules limiting engine displacement to 305 cu in (5.0 L) from 1967 to 1969. It was the product of placing the 283 cu in (4.6 L) 3 in (76.2 mm) stroke crankshaft into ...
Like sprint cars, supermodifieds do not have starters, batteries, or transmissions, and are push-started. The combination of high power, light weight, and high cornering ability allows supermodifieds to average over 120 mph (190 km/h) on a 1/2-mile oval and 150 mph (240 km/h) on a 1-mile (1.6 km) oval, with top speeds over 190 mph (310 km/h).