* Most common: A 5.0L (305 cubic inch) V8. This was the standard engine.
* Also available: A 5.7L (350 cubic inch) V8, often as an option or in higher trim levels.
So there's no single answer; it depends on the specific Caprice. To know for sure, you'd need to check the vehicle's paperwork (like the title or build sheet) or look at the engine itself.