Blankenship's debut came in 1994, when he raced at Martinsville. Starting 24th in the thirty-six car field, Blankenship finished 31st after a mid-race engine failure.
Blakenship returned to action in mid-1999, racing for Team Rensi Motorsports. Blakenship turned in a solid qualifying effort in his team debut at South Boston. After starting ninth, though, Blankenship crashed his car and finished 29th. He was not able to improve with a 43rd at Pikes Peak and has not raced since.