What is the Horsepower for a 89 firebird with 5.7L engine?
The horsepower for a 1989 Pontiac Firebird with a 5.7L engine varied depending on the specific trim level and options. There wasn't just one horsepower rating. However, the most common horsepower rating for the 5.7L (350 cubic inch) engine in a 1989 Firebird was around 230 horsepower. Some variations could be slightly higher or lower.