NASCAR is considering a major experiment to see if it can improve the racing entertainment at the Indianapolis Motor Speedway, where there has been precious few green-flag passes for the lead in recent years. The sanction is considering use of restrictor-plate engines in next year’s second-tier Xfinity Series event at IMS, azcentral sports has learned. Plate engines, which restrict engine horsepower, are only mandated at the high-speed banked Daytona and Talladega superspeedways. If tried, and if deemed successful, plate engines could be used for the 2018 Brickyard 400 – still arguably Cup’s second-most prestigious race after the Daytona 500.(Arizona Republic)
