The two-barrel 400 cubic-inch V8 was standard on all Catalina/Brougham/Safari models rated at 175 net horsepower compared to 265 gross horses in 1971 thanks to a switch in power measurements from gross ratings which were measured by a dynometer with no accessories attached while the "net" figures were measured "as installed" in a vehicle with all accessories and emission gear hooked up. Optional engines included a two-barrel 455 rated at and a four-barrel 455 rated at . The year 1972 was the last for the Catalina convertible and the Catalina Brougham series.