McClain was the starter and leading receiver for the 1961 Vols, who finished with a 6-4 record under head coach Bowden Wyatt. He had 11 catches for 149 yards and a touchdown. He also registered 14 yards on 11 carries from scrimmage.
He had entered UT as a tailback candidate but was switched to wingback before the start of the 1961 season.
McClain worked as a telephone serviceman with TDS Telephone. In addition to being a Vol letterman, he was a member of Calvary Baptist Church and the Bridle and Saddle Club. He served in the Navy during the Vietnam war.
Survivors include his wife, Alice; sons, Greg and Jason; four grandchildren; mother and stepfather, Christine Donegan Sizemore and Otis Sizemore, and sister, Mary Elizabeth Skelton, all of Waynesboro.