DARLINGTON, S.C. — Jamie McMurray couldn't help smiling during his record-setting lap at Darlington Raceway. Turned out, he was one of few to leave the track happy.

McMurray set a Darlington record of 180.370 mph to lead qualifying Friday for the Southern 500. Seven-time Darlington winner Jeff Gordon was a whisker behind at 180.323 and Brian Vickers third in 179.987.

All three bettered the old mark that Matt Kenseth set a year ago.

"I was like grinning in the car because you just don't get to have this kind of lap very often," McMurray said.

It was the fifth career pole and second this season for the Daytona 500 champion. And it came on a day when racers had a hard enough time staying on course at the track "Too Tough To Tame."

Last week's winner at Richmond, Kyle Busch, scraped the wall on his qualifying run, drawing cheers from those in the stands in front of the start-finish line. Busch will start 39th on Saturday night.

Dale Earnhardt Jr. wrecked on his second lap of practice and moved to a back up car. He was so spooked by the track, Earnhardt predicted he'd show up here one year, have another bad run and give up the sport.

That's an attitude "Little E" didn't inherit from his late father — Dale Earnhardt is second on Darlington's career list with nine victories. Earnhardt finished 19th fastest.

Mark Martin, who won this race at 50 years old a year ago, had the fifth fastest time and will start alongside Ryan Newman.