Flat Track racing If everything seems under control you’re just going fast enough poster
In 1976 dirt track engines were limited to a maximum of two cylinders; in 1977 the short track engines were limited to 250cc and limited to one cylinder. When the Yamaha team withdrew from the Grand National championship after the 1977 season, Harley-Davidson was left once again to dominate the series. By 1983, the Grand National Championship had become the best to form of dirt track racing in America, either on two wheels or four wheels. This would be the high point for the championship as, other forms of motorcycle racing such as motocross and road racing began to overtake dirt tracking in popularity.
Tammy Jo Kirk became the first woman to score GNC points in 1983. In 1984, Honda entered the championship and broke the Harley-Davidson stranglehold with Ricky Graham winning the championship. Honda followed with three consecutive national championships by Bubba Shobert before they withdrew in 1987, leaving Harley-Davidson once again as the sole major manufacturer in the series. In 1984 short-track rules granted a 500cc displacement limit for four-stroke engines.
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