Oldsmobile 455ci V8's have between 310-390 HP depending on the exact year and maybe other factors - I have one in my '72 jet boat, when in this application some HP is taken away when total HP is caculated because of the way it is used. Adultoys2007@gmail.com
There were 4 engines available in the Oldsmobile 455 4V, a 225, 250, 270 and 300 HP.
225 / 250 / 270 / 300 horsepower ( 4 versions of the Oldsmobile 455 - 4 barrel carburetor - listed in 1972 )
Oldsmobile stopped production of the 455 in 1976. There were no 455s produced in 1987.
A 1974 Oldsmobile 455 V8 has horsepower of 275 to 400. The Oldsmobile 455 was last produced in the year of 1975.
350,400 or 455
320 hp
225 horsepower - UA engine code or 250 horsepower - UD engine code
The the 1969 OLDS 98 had 365HP
It ranged anywhere from 310-365 hp.
400lbs
The 1987 Trans Am didn't have a 455
The Oldsmobile 442 means (400 cubic inches-after '65) (four barrel carb) and (dual exhaust) if your car does not have these it is not a true 442. The 350 that year had only 160hp to 180hp but the 442 should have had the 455 and 270hp to 300hp. Are you sure your car is a 442? It may be a cutlass with a 442 paint job.