NASCAR's boss: If age requirement changes, word will go out

DAYTONA BEACH, Fla. -- NASCAR president Mike Helton said an age requirement change for the Sprint Cup Series is not imminent, but NASCAR officials still are considering 21 as the age rule for future entry into the series.

"If we do this, we will give plenty of advance notice," Helton said Thursday. "And we would have an adjustment period before it was implemented."

Some people have assumed the idea of making the change was directed at teenage racing phenom Joey Logano, who will compete in NASCAR's Nationwide Series when he turns 18 in May.

Logano is considered a rising star who could compete in Cup next season when he's still 18.

"This is not the Joey Logano rule," Helton said. "In fact, whatever we do probably wouldn't affect him."

Helton didn't get specific, but it's possible some drivers under 21 would get grandfathered in if the change happens. It's also possible the change would not go into effect until after Logano turns 21.

Sprint Cup does not have any drivers until 21 this season. But several current drivers were racing in the series before they turned 21, including Kyle Busch, Reed Sorenson, Brian Vickers and Kyle Petty.

Terry Blount covers Motorsports for ESPN.com.