Kenny Hilliard, Spencer Ware and Jordan Jefferson all scored on the ground for LSU (12-0, 8-0 SEC), which is 12-0 for the first time and will play No. 13 Georgia next weekend in Atlanta.
A win over the Bulldogs would assure the Tigers their third trip to the BCS title game in nine seasons. Though at this point, LSU might be able to get there even if it loses.
Arkansas took a surprising 14-0 lead on Tyler Wilson's TD pass to Jarius Wright and Alonzo Highsmith's 47-yard fumble return, but LSU stormed back by scoring 41 of the next 44 points in the game.
Tramain Thomas makes the hit that forced a fumble and led to Alonzo Highsmith's return for a touchdown.
Highsmith heads to the end zone with Darius Winston as an escort after picking the fumble out of the air. His score put the Razorbacks up 14-0 in the second quarter.
Broderick Green picks up yardage in the first half.
Highsmith and Ross Rasner wrap up LSU quarterback Jordan Jefferson.
Tyler Wilson was under constant pressure on Friday.