It's a reuniting of Littrell and Davis who played together at Oklahoma, where they won the national championship in 2000.
This past season was Davis' first season at East Carolina after spending last year as James Madison's co-offensive coordinator and offensive line coach.
Before that, he was a defensive lineman graduate assistant at Texas A&M for two seasons. He was run game coordinator and offensive line coach at Doane College in 2005.
Davis was co-offensive coordinator and offensive line coach at Southern University Lab School in his native Baton Rouge, Louisiana from 2003-04. He played offensive line at Oklahoma from 1998 through 2002.
Littrell was hired earlier this month and is regarded as one of college football’s brightest young offensive minds.
This season was Littrell's second as assistant head coach for offense and tight ends coach at North Carolina. Under him, the Tar Heels had one of the nation's most prolific offenses this season with their fast-paced spread attack.
The 37-year-old Littrell replaces former North Texas coach Dan McCarney who was fired in October amidst an 0-5 start. McCarney had a 22-32 record in his five seasons with the Mean Green.
They finished with a 1-11 record this season, including a 1-7 mark in Conference USA, and were among the nation’s worst offensively.