* The specific Hemi engine: Chrysler has produced many different Hemi engines over the years, ranging from small-block to large-block versions, each with different displacements and power outputs. Modern Hemi engines (like those found in the Dodge Charger or Ram trucks) are very different from the original Hemi engines of the 1960s.
* The year of manufacture: Even within a specific engine family, horsepower can change from year to year due to modifications and updates.
* Modifications: Aftermarket modifications can significantly increase or decrease horsepower.
To know the horsepower of a specific Hemi engine, you need to specify the engine displacement (e.g., 5.7L, 6.1L, 6.4L) and year of manufacture. You can then find the factory horsepower rating in owner's manuals, online specifications, or automotive resources.
