The Oldsmobile Ninety-Eight was one of the longest-running model in the division's history, produced from 1940 until 1996. 1966 was part of the Eighth Generation, produced from 1965 through 1970. In 1965, it received a complete redesign along with other full-sized General Motors cars but continued to use the C-Body platform that it shared with Cadillac and the Buick Electra. In comparison, the Oldsmobile 88 used the B-Body platform.
The Ninety-Eight followed the company's designs language with similar design cues but with more squared-off lines. The 4-door 6-window body styles were gone, replaced with 4-door 4-window body styles. The Custom Sport Coupe also had been dropped and the Luxury Sedan was no longer a hardtop but featured a more luxurious interior and more standard amenities than the Town Sedan. Most of the Ninety-Eight Luxury Sedans had vinyl roofs. All hardtops were once again dubbed Holidays.
Although buyers had the option of buying the Starfire Hardtop, priced at $3,540, or the exotic front-wheel-drive Toronado hardtop, priced at $4,585, the Ninety-Eight remained Oldsmobile's top-of-the-line model. Body styles included a convertible, 2- and 4-door Holiday Hardtop, Town Sedan, and Luxury Sedan. Prices ranged from $4,000 for the Town Sedan and rose to $4,420 for the convertible. The Luxury Sedan was the most popular with 38,123 examples sold, and the 4-door Holiday Hardtop accounted for 23,048 sales. Just 4,568 buyers selected the convertible. The total 1966 Oldsmobile Ninety-Eight production exceeded 88,000 vehicles that accounted for approximately 15-percent of the overall company sales.
Standard equipment included power steering, power brakes, Turbo Hydra-Matic, two-speed wipers, carpeting, foam seat cushions, electric clock, special wheel covers, seat belts, carpeting, and special armrests on selected models. The interior upholstery was finished in either leather or cloth.
The Olds 98 was powered by an overhead valve V8 engine with a 425 cubic-inch displacement, hydraulic valve lifters, Rochester four-barrel carburetor, and a 10.25:1 compression ratio. It delivered 365 horsepower and was backed by the Hydra-Matic transmission.By Daniel Vaughan | Aug 2020