After only one year as head coach at Louisiana Tech, Torbush joined the UNC coaching staff in 1988 as defensive coordinator and linebackers coach. He was the only member of Mack Brown's original coaching staff to stay throughout Brown's 10-year tenure. He recruited and coached many defensive standouts; his 1995, 1996 and 1997 units led the nation in total defense three years in a row and were often regarded as the best in the country. Torbush was a 1997 finalist for the Broyles Award, given annually to the nation's top assistant coach. During his time at UNC, at least one of his linebackers went pro every year. Among his more notable players were Julius Peppers, Brian Simmons, Greg Ellis, and Dré Bly.