310 gross bhp/ 250 SAE net hp
250
# the 400 had 225 horse ..........the 455 had 250 horse.
A 1974 Oldsmobile 455 V8 has horsepower of 275 to 400. The Oldsmobile 455 was last produced in the year of 1975.
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.
Around 365 gross hp
Around 200 net hp
58
455 horsepower
350,400 or 455
1970=360 bhp (factory rating, realistically more like 420hp for the Stage 1) 1976=205 bhp :(
None, the firebird formula 455 was built between 1971 and 1974. The formula was only avilable with the 400 and 350 from 1975 to 1979. According to the data displayed by yearone.com, there were 7528 Trans Am Coupes produced with 455's. All of these units were equipped with Manual transmissions. The rarest of the group is the 1976 Limited Edition 455 with T-tops.
The 1987 Trans Am didn't have a 455