From 1977-79, Cherry's "Lunch Pail A.C." captured three division titles for the Bruins. Park earned two First All-Star Team selections, while coming in second in the Norris Trophy race twice in a Bruins' uniform, with 1977-78 being considered one of his finest seasons. In 1977 and 1978, Park was a key contributor to Boston's back-to-back appearances in the Stanley Cup Finals where they lost to the Montreal Canadiens both times. His last highlight with Boston came in Game 7 of the Adams Division finals against the Buffalo Sabres in the 1983 playoffs, when Park scored the game-winning goal in overtime and help Boston advance in to the conference finals — Park's career overlapped with the first four years of the emerging superstar defenceman of the Bruins, Raymond Bourque, from 1979 to 1983.