NASCAR Reveals 2019 Cup Series Rules Package | Performance Racing Industry
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NASCAR Reveals 2019 Cup Series Rules Package
October 2, 2018
NASCAR has confirmed the details of two baseline rules packages that will be utilized in the Monster Energy NASCAR Cup Series (MENCS) next year. The different packages will be tailored to the specific tracks on the MENCS schedule.
NASCAR Reveals 2019 Cup Series Rules Package

PRI exhibitor NASCAR has confirmed the details of two baseline rules packages that will be utilized in the Monster Energy NASCAR Cup Series (MENCS) next year.

The different packages will be tailored to the specific tracks on the MENCS schedule, with a combination of a smaller tapered spacer to reduce engine horsepower to a target goal of 550 (from 750) and aero ducts to foster tighter racing on a majority of speedways measuring longer than one mile.

Both features will be in place for 17 of the 36 races next season, excluding the Daytona 500, which will run with traditional restrictor-plate rules. Five other races will be run with the smaller spacer, but without ducts.

The baseline aero elements of the rules package are a taller 8-inch by 61-inch rear spoiler, a larger front splitter with a 2-inch overhang, and a wider radiator pan that measures 37 inches wide in the front tapering to 31 inches at the rear. Those base changes will be in place at every race next season with the intent of adding downforce to stabilize handling.

Beyond the baseline components are the smaller tapered spacer (.922-inch versus the current 1.17-inch) and aerodynamic ducts to be used at select oval tracks larger than 1 mile. The smaller spacer will further limit airflow through the engine and thereby horsepower to a figure around 550, down from the current 750.

Both Pocono events and races at Atlanta, Darlington and Homestead will use the smaller tapered spacer, but will not use the aero ducts that transfer air to the side of the car away from the front tires. Neither the smaller spacer nor ducts will be used at short tracks and road courses.

Events at Daytona Int’l Speedway and Talladega Superspeedway also will be contested without restrictor plates next season for the first time since 1987. The cumulative effect of the base aerodynamic changes, engine restrictions and aero ducts are expected to keep the speeds and competition close to their current style of racing. The exception is the 2019 Daytona 500, which will be held under the current rules with restrictor plates.

Other rules announced Tuesday for next year include:
• The previously announced enhanced vehicle chassis (EVC) will be mandatory at all races.
• NASCAR has reduced the amount of organizational tests for the calendar year from four to three. Additionally, Goodyear tire tests will be conducted by three teams, down from the current four.
• NASCAR will expand the use of sealed engines next season, increasing to three long block seals in addition to keeping the current 13-race short block seal requirement.

For more information, visit NASCAR.com.