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The Delta name in 1965 was an upscale trim line of the Dynamic 88, the Dynamic 88 Delta, replacing the previous top-series B-body Olds, the Super 88. Early '65s were referred to as Dynamic 88 Deltas, but within a few weeks after the start of the model year, Olds began marketing the line as a separate series known as the Delta 88.
The Roto Hydramatic was used in all full-sized Oldsmobile models including the Dynamic 88, Super 88, Ninety-Eight and Starfire from 1961-1964 as well as the compact Oldsmobile F-85 from 1961-1963.
Its output of 0.45 hp per cubic inch was 7% better than the 0.42 hp per cubic inch of the popular and widely produced 100 hp (75 kW) 1949 Ford Flathead V8. 1952 88 and Super 88 V8s used a 4-barrel carburetor for 160 hp (120 kW) and 265 lb⋅ft (359 N⋅m), while 4-barrel 1953 versions raised compression from 7.5:1 to 8.0:1 for 165 hp (123 kW ...
Oldsmobile boasted in a 1965 press release that "a Jetstar I proved to be the top accelerator of the entire event" at the 1965 Pure Oil Performance Trials in Daytona Beach. Those trials were sanctioned and supervised by NASCAR. The 370 horsepower (280 kW) Starfire V8 was the largest and most powerful V8 in Oldsmobile's market segment in 1965.
Oldsmobile went even further by creating a whole new full-sized series, the Jetstar 88, which was $75 lower than the Dynamic 88 series (but still a few dollars higher than comparable Pontiac Catalina models) and also got a smaller engine - a 330 cu in (5.4 L) V8 and two-speed automatic transmission from the intermediate F-85/Cutlass line, along ...
The four-barrel "Ultra High Compression" version of this engine rated at 360 horsepower (270 kW) was the only engine available in 1965. Ninety-Eights were built only in Lansing. Between 1965 and 1975 Oldsmobile commissioned Cotner-Bevington to build professional cars, (ambulances and hearses), using the large Ninety-Eight chassis.
The GM B platform was introduced in 1926 with the Buick Master Six, and the Oldsmobile Model 30, and had at least 12 major re-engineering and restyling efforts, for the 1937, 1939, 1941, 1949, 1954, 1957, 1959, 1961, 1965, 1971, 1977, and 1991 model years; along with interim styling changes for 1942, 1969, and 1980 that included new sheetmetal and revised rooflines.
It was Oldsmobile's smallest, budget priced model—some two feet (60 cm) shorter and $451 ($4,794 in 2024 dollars [4]) less than the next-smallest Olds, the full-sized Dynamic 88. The F-85 had double wishbone front suspension and a four-link live axle in the rear, suspended with coil springs all around; the drum brakes had a diameter of 9.5 ...