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Restrictor Plates are Larger for Daytona

With a larger restrictor plate at Daytona, can faster speeds be far behind?
Sprint Cup teams will start the Coke Zero 400 weekend at Daytona International Speedway using restrictor plates with holes 1-1/32nd of an inch in diameter, 3/64ths of an inch bigger than the plates used in the Daytona 500 in February, when the Cup cars still had rear wings.

NASCAR replaced the wing with a rear spoiler in March.

The bigger the holes, the more air that flows through the engine and the more horsepower generated.

“We think this will be a needed boost due to the additional drag we've picked up since switching from a rear wing to a rear spoiler,” NASCAR vice president of competition Robin Pemberton said Monday.

NASCAR can change the size of the restrictor plate up until race time.

“I think a bigger plate is a good change,” said David Reutimann, who finished fifth in the 500. “I know that NASCAR has put a lot of thought into that stuff. We are talking about very, very small changes. We're not talking about going from one inch to two inch.

“Anytime the plate gets bigger the horsepower goes up—and I'm a fan of that. With the new configuration of the spoiler on the back I think it's a good fit for what we're trying to do.”



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Close Finish at Daytona
Kevin Harvick, driver of the #4 Jimmie John`s/Budweiser Chevrolet, suffers a mechanical issue during practice for the NASCAR Sprint Cup Series Folds of Honor QuikTrip 500 at Atlanta Motor Speedway on February 28, 2015 in Hampton, Georgia.  (Photo Credit: Rainier Ehrhardt/NASCAR via Getty Images)
Joey Logano, driver of the #22 Discount Tire Ford, leads the field past the green flag to start the NASCAR XFINITY Series Hisense 250 at Atlanta Motor Speedway on February 28, 2015 in Hampton, Georgia.  (Photo Credit: Sarah Glenn/NASCAR via Getty Images)
Jeffrey Earnhardt, driver of the #55 Fronius USA/Viva Auto Group Chevrolet, spins out during the NASCAR XFINITY Series Hisense 250 at Atlanta Motor Speedway on February 28, 2015 in Hampton, Georgia.  (Photo Credit: Rainier Ehrhardt/NASCAR via Getty Images)
Kevin Harvick, driver of the #88 Bad Boy Buggies Chevrolet, celebrates with a burnout after winning the NASCAR XFINITY Series Hisense 250 at Atlanta Motor Speedway on February 28, 2015 in Hampton, Georgia. (Photo Credit: Jonathan Moore/Getty Images)
Kevin Harvick, driver of the #88 Bad Boy Buggies Chevrolet, celebrates in victory lane after winning the NASCAR XFINITY Series Hisense 250 at Atlanta Motor Speedway on February 28, 2015 in Hampton, Georgia. (Photo Credit: Jerry Markland/Getty Images for NASCAR)
Joey Logano, driver of the #22 Discount Tire Ford, soc during practice for the NASCAR XFINITY Series Hisense 250 at Atlanta Motor Speedway on February 27, 2015 in Hampton, Georgia.  (Photo Credit: Jerry Markland/Getty Images)
David Ragan, driver of the #18 M&M`s Crispy Toyota, drives in the garage area during practice for the NASCAR Sprint Cup Series Folds of Honor QuikTrip 500 at Atlanta Motor Speedway on February 27, 2015 in Hampton, Georgia. (Photo Credit: Kevin C. Cox/NASCAR via Getty Images)
Kevin Harvick, driver of the #4 Jimmie John`s/Budweiser Chevrolet, prepares to drive during practice for the NASCAR Sprint Cup Series Folds of Honor QuikTrip 500 at Atlanta Motor Speedway on February 27, 2015 in Hampton, Georgia. (Photo Credit: Sarah Glenn/NASCAR via Getty Images)
David Ragan, driver of the #18 M&M`s Crispy Toyota, stands on the grid during qualifying for the NASCAR Sprint Cup Series Folds of Honor QuikTrip 500 at Atlanta Motor Speedway on February 27, 2015 in Hampton, Georgia. (Photo Credit: Brian Lawdermilk/NASCAR via Getty Images)
Joey Logano, driver of the #22 Shell Pennzoil Ford, signs the Coors Light Pole board after qualifying for the NASCAR Sprint Cup Series Folds of Honor QuikTrip 500 at Atlanta Motor Speedway on February 27, 2015 in Hampton, Georgia. (Photo Credit: Sarah Glenn/NASCAR via Getty Images)
Joey Logano, driver of the #22 Shell Pennzoil Ford, poses with the Pole Award after qualifying for the NASCAR Sprint Cup Series Folds of Honor QuikTrip 500 at Atlanta Motor Speedway on February 27, 2015 in Hampton, Georgia. (Photo Credit: Sarah Glenn/NASCAR via Getty Images)
Kevin Harvick, driver of the #4 Jimmy John’s/Budweiser Chevrolet SS qualifies in second position Friday, February 27, 2015 for a front row position start in Sunday`s NASCAR Sprint Cup race at Atlanta Motor Speedway in Hampton, Georgia. (Photo by Rusty Jarrett/HHP for Chevy Racing)
Jamie McMurray, driver of the #1 McDonald’s Chevrolet SS qualifies in third position Friday, February 27, 2015 for Sunday`s NASCAR Sprint Cup race at Atlanta Motor Speedway in Hampton, Georgia. (Photo by Garry Eller/HHP for Chevy Racing)
Kyle Larson, driver of the #4 Energizer Chevrolet SS qualifies in sixth position Friday, February 27, 2015 for Sunday`s NASCAR Sprint Cup race at Atlanta Motor Speedway in Hampton, Georgia. (Photo by Garry Eller/HHP for Chevy Racing)
Ryan Newman, driver of the #31 Caterpillar Chevrolet SS qualifies in seventh position Friday, February 27, 2015 for Sunday`s NASCAR Sprint Cup race at Atlanta Motor Speedway in Hampton, Georgia. (Photo by Alan Marler/HHP for Chevy Racing)
Team XTREME Racing #44 entry - driven in the Daytona 500 by Reed Sorenson (Photo Credit: Robert Laberge/NASCAR via Getty Images)
Gene Stefanyshyn, NASCAR Vice President of Innovation and Racing Development, speaks to members of the media after a testing session at Atlanta Motor Speedway on February 26, 2015 in Hampton, Georgia.  (Photo Credit: Kevin C. Cox/NASCAR via Getty Images)

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