1986 Marmon Heavy Duty Wrecker What I have is a 1986 Marmon with a 400 big cam Cummins with a thirteen speed transmission The truck runs great and everything works and it also has cold a/c Has terrific tires for the most part and the jakes do work. The Marmon truck was a low-production handmade truck sometimes dubbed the Rolls-Royce of trucks Citation needed An overcrowded American truck indust...