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The NASCAR Igloo Sportsman Challenge is a discontinued NASCAR division. It was created by Humpy Wheeler in 1989 to give short track drivers superspeedway experience.
The series used former Cup/Busch series cars that were mainly run from the mid-1980s to early 1990s, and the year range for eligible cars grew each year. The wheelbase and tires were the same as the cars from the mid-1980s to 1990, using a single two venturi (metering) carburetor instead of the four venturi variant used in the major series, reducing the horsepower from 700 to 350, similar to what is used in NASCAR-sanctioned weekly racing.
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