It ranged anywhere from 310-365 hp.
320 hp
A 1974 Oldsmobile 455 V8 has horsepower of 275 to 400. The Oldsmobile 455 was last produced in the year of 1975.
Oldsmobile stopped production of the 455 in 1976. There were no 455s produced in 1987.
225 horsepower - UA engine code or 250 horsepower - UD engine code
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 )
The the 1969 OLDS 98 had 365HP
455 horsepower
No, they are completely different.
No, they are not the same engine. The Oldsmobile 455 had a bore and stroke of: 4.126 X 4.25 The Pontiac 455 had a bore and stroke of: 4.152 X 4.21
yes
No. they are different head designs.