Feature Cat C18 765: 765hp @ 1800rpm, 2578 lb/ft @ 1300rpm Cat C18 800: 800hp @ 1800rpm, 2699 lb/ft @ 1300rpm Cat C18 1000: 1001hp @ 1900rpm. 3033 lb/ft @1600rpm About the C18: The C18 is a marine propultion and gen set engine. They are now starting to be used in some heavy haul setups. The engines range from 600hp to 800hp. The 1000hp engine stats are from a boat brochure. Did not include the lower hps as the C15 covers them, from a fuel economy stand point. Credits ramcharger04, kriechbaum, Robinicus