455 horsepower
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
The 1987 Trans Am didn't have a 455
Horsepower TV - 2006 Building an Olds 455 was released on: USA: April 2009
225 / 250 / 270 / 300 horsepower ( 4 versions of the Oldsmobile 455 - 4 barrel carburetor - listed in 1972 )
225 horsepower - UA engine code or 250 horsepower - UD engine code
There are many ways to increase the 455 horsepower. With a cam/valve train swap and working over the heads (or replacing with aftermarket) you can be in the 500+ range. "Pontiac High Performance" is a great source for information on engine modifications.
You need to specify which model Caterpillar motor you have. 455 is just a horsepower rating - several models were available with a 455 horsepower rating, to include the 3406B, 3406E, C12, C13, and C15.
250
Oldsmobile stopped production of the 455 in 1976. There were no 455s produced in 1987.
Depends on what year/application you're referring to...