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Daytona 500 Testing: Whoa, Boys! NASCAR Shrinks Restrictor Plates

In the constant struggle to regulate speeds at Daytona, NASCAR announced on Wednesday that it will decrease the size of the restrictor plates for the upcoming test at Daytona International Speedway. The restrictor plates are designed to reduce airflow into the carburetor which in turn reduces horsepower at Daytona and Talladega, the sister tracks where speeds are traditionally the highest on the schedule. During last month's Goodyear tire test at Daytona, teams were using a 30/32 of an inch plate, and for the January test the plate size will be dropped to 29/32 of an inch. After the December test, Vice President of Competition Robin Pemberton hinted that NASCAR may reevaluate the size of the plates going into the next session slated for Jan...

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