Pros and cons of restrictor plates will be debated thoroughly this weekend as the Nextel Cup series stops again at Talladega Superspeedway for the Aaron's 499.
In fact, a smooth track fresh from a fall repaving helped increase speeds so much that NASCAR made the four holes on restrictor plates 1/32 of an inch smaller for Friday's Busch series qualifying.
So what do these metal plates with four holes drilled into them do exactly once they are installed atop the carburetor?
The ...Read full story
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