He was replaced as the Tiger Cat place kicker by Ian Sunter after the 1971 season, hitting only 11 of 27 field goal attempts.

Coffey was a member of two Grey Cup winning teams, in 1967 and 1972, both with Hamilton against the Saskatchewan Roughriders, especially during the 1967 season, catching 42 passes for 683 yards (16.3 yards/catch) and 5 touchdowns and hitting 18 of 27 field goal attempts for a total of 107 points.

In the 55th Grey Cup (1967) game, he scored 3 points as a kicker (2 converts and 1 rouge after a missed field goal).

In November 2006, Coffey was voted as #27 on a list of the CFL's top 50 players since 1945, in a poll conducted by Canadian sports network TSN.

[4] Coffey, who lived in Burlington, Ontario, with his wife Joan, died from lung cancer on August 25, 2020, at St. Peter's Hospital in neighbouring Hamilton.