Final year for the 1973-vintage Colonnade body. The 442 was the only Olds intermediate to feature the sloped nose from the '76 model as this year's Cutlass S switched to an upright nose similar to Cutlass Supreme models. Engine offerings were revised with Buick's 231 cubic-inch V6 replacing the Chevy 250 inline-six as base power, with optional powerplants again including the Oldsmobile built 260 and 350 cubic-inch Rocket V8s. Replacing the 455 as the top engine this year was a new Olds 403 cubic-inch Rocket V8 rated at 180 horsepower (130 kW). Transmission offerings included a three-speed manual or Turbo Hydra-matic with the V6, five-speed manual or Turbo Hydra-matic for the 260 V8 and Turbo Hydra-matic was the sole offering for the 350 and 403 V8s. Interiors included a standard bench seat with cloth-and-vinyl or all-vinyl bench seat, or optional Strato bucket seats with all-vinyl upholstery and without the swiveling feature of previous years. Console again optional with bucket seats.