* The most common engine was the 5.0L (305 cubic inch) V8. This typically produced around 150-165 horsepower. The exact figure depended on minor variations in the year and specific trim level.
* A more powerful 5.7L (350 cubic inch) V8 was also available. This engine produced significantly more horsepower, typically in the 190-215 horsepower range, again depending on the specific configuration.
Therefore, there's no single answer. You need to know which engine was in the specific 1986 Trans Am you're interested in to determine its horsepower.
