Background
McGowan was born in Concord, New Hampshire.
McGowan was born in Concord, New Hampshire.
He turned professional in 1954 and joined the Professional Golf Association Tour in 1961. He played on the Professional Golf Association Tour through 1970, winning one event, the 1964 Mountain View Open among 32 top-10 finishes. He had four runner-up finishes: 1964 Saint Paul Open Invitational to Chuck Courtney, 1964 Sahara Invitational to R. H. Sikes, 1965 Western Open to Billy Casper, and 1969 Texas Open Invitational to Deane Beman.