The producers put an asterisk after the title in many ads, explaining Rumble as "teenage slang for 'gang war'".
Joe Brindo's car, that impresses the gang, is a 1956 Lincoln Premiere. This was the first year for that model and was the mid-line vehicle for Lincoln's line-up between the Capri and the Continental Mark II.
Although the new union local is formed along the Brooklyn waterfront, and this is what is depicted as the setting for the film, Pier 85 is on the west side of midtown Manhattan on the Hudson River, next to where the U.S.S. Intrepid Museum is.