The best Cummins diesel engines are the result of decades of innovation, which all began with founder Clessie Cummins. They also have a history of racing at the Indianapolis 500. In 1934, Cummins entered two cars into the 500-mile race held at the Brickyard, otherwise known as the Indianapolis Motor Speedway – one powered by a four-stroke diesel engine, which would become the company norm, and the other powered by a two-stroke. Clessie Cummins exhibited a high level of mechanical aptitude
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