The 21-year-old midfielder scored his thirdgoal of the tournament following his double in Korea's opening 2-1 win over Bahrain, as Ji Dong-won collected a long ball and put the ball into the path of his teammate.
It was the 31-year-old Cahill's thirdgoal in as many seasons at Eastlands and it was a dream start for the visitors, whose poor run of form had seen them skirt around the relegation zone for much of the season.
Boston also nearly blew a 3-1 series edge in the opening round this year against Toronto, before rallying from a three-goal deficit in the third period and capturing Game 7 in overtime.
Zimbabwe should have taken the lead as early as the third minute when Tinashe Nengomasha, recently named Footballer of the Year in South Africa, had a goal inexplicably ruled out by the referee.
Ford said its fourth-quarter production goal of 725, 000 vehicles is up 7% from a year ago, while third-quarter production will be slightly below guidance of 690, 000 vehicles.