East Carolina is removing the interim label and promoting Blake Harrell to head football coach, ESPN reported Monday.The Pirates are 4-0 since Harrell took over for Mike Houston, who was fired on Oct. 20 after compiling a 27-38 record in five-plus seasons.Harrell, who was promoted from defensive coordinator, has guided ECU (7-4, 5-2 American Athletic Conference) to wins over Temple, Florida Atlantic, Tulsa and North Texas.