the Turbo Hydra-matic transmission optional with that engine and the only transmission offered with the V8 engines. Interiors again consisted of bench seats with cloth-and-Moroceen vinyl or all-Moroceen trim, or optional swiveling Strato buckets upholstered in Moroceen vinyl. Revised door panels featured pull straps. The console remained an option with bucket seats. Due to Detroit's conversion from SAE Gross horsepower ratings (commonly referred to as "brake horsepower" (bhp) to SAE net for the 1972 model year, and ever-more stringent Federal emissions standards, engine output continued to significantly decline. The 1975 4-4-2 equipped with a 455 was rated by Oldsmobile at just 190 hp at 3400 rpm and 350 lb-ft at 2000 rpm. 1976 The 1976 4-4-2 shared a new aerodynamic sloped nose designed for NASCAR with split grilles and new quad rectangular headlights with Cutlass S models, along with revised lower sheetmetal with fewer creases than the 1973–75 models. The 4-4-2 option was offered on Cutlass S coupes and was once again an appearance/handling package. Engine/transmission offerings were unchanged from 1975 except that the 260 V8 could be ordered with a five-speed manual transmission. This was also the final year for the 455 Rocket V8. Interiors again consisted of bench seats with cloth-and-Moroceen vinyl or all-Moroceen trim, or optional swiveling Strato buckets upholstered in Moroceen vinyl. A console was optional with bucket seats. 1977 The 1977 model year was the last for the 1973-vintage Colonnade body. The 4-4-2 was the only Oldsmobile intermediate to feature the NASCAR sloped nose from the '76 model, with the Cutlass S switching to an upright nose similar to Cutlass Supreme models. Engine offerings were revised, with Buick's 231 cubic-inch V6 replacing the base model Chevy 250 inline-six, with optional powerplants again including the Oldsmobile built 260 and 350 cubic-inch Rocket V8s. Replacing the 455 as the top engine was a new Oldsmobile 403 cubic-inch Rocket V8 rated at . 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. The console remained optional with bucket seats. Fourth generation 1978 The 4-4-2 model continued on the downsized A-body platform introduced for the 1978