Korn opened with an interception on his first throw. But he later found walk-on Terrance Ashe for a 37-yard score, fellow freshman Brian Linthicum for a 15-yard touchdown and fullback Alex Pearson for a 3-yard touchdown pass. Korn, a highly regarded prospect from Byrnes (S.C.) High School, finished 6 of 13 for 91 yards.
Harper, who came into the fall as the team's No. 1 quarterback, connected with Jacoby Ford for a 6-yard touchdown and Durrell Barry for a 3-yard touchdown. Harper, a junior, was 8 of 11 for 80 yards.
"The quarterbacks played well. They made some good throws and some good reads," Clemson coach Tommy Bowden said. "They got the offense in the end zone a couple of times."
Bowden said he wasn't satisfied with the pace of the offense and getting plays off on time.
"We still have a lot to accomplish by the first game," he said.
The Tigers will go through two more scrimmages at Memorial Stadium before they open the season Sept. 3 against Florida State.
Recently converted running back Sadat Chambers led the ground game with 27 yards and two touchdowns on 10 carries. Backup Ray Ray McElrathbey was next with six rushes for 25 yards, including a 6-yard touchdown run.
Expected starters James Davis and C.J. Spiller ran just six times apiece for 32 yards combined.
Ashe was the top receiver with four receptions for 59 yards.
Freshman defensive end Miguel Chavis was the team's top tackler with eight. Senior linebacker Tramaine Billie had five stops, including three for negative yardage.
Defensive backs DeAndre McDaniel and Marcus Gilchrist each had an interception.
Kicker Mark Buchholz had field goals of 22 and 28 yards and put two kickoffs into the end zone. College football kicks off from the 30-yard line this year, five yards further back than before.
In other news, Clemson will hold its annual Fan Appreciation Day from 3-5 p.m. today at Memorial Stadium.
All players and coaches will be available for autographs and pictures.
In an attempt to accommodate as many fans as possible, those who attend will only be allowed to have one item autographed or one picture taken with Davis, Spiller and Bowden.