How much horsepower does a 5.7 V8 make?
In short, a 5.7-liter V8 typically produces roughly 350 to 400 horsepower, with the most modern variants around 395 horsepower. The exact figure depends on the engine version and model year. This article explains the range and what drives the differences.
The phrase “5.7 V8” has been used for several engines over the decades. The best-known is Chrysler’s Hemi 5.7L, which has powered Dodge, Jeep, and Chrysler models for years. Horsepower can vary widely based on technology such as variable valve timing, cylinder deactivation, and mild-hybrid assist.
Representative horsepower figures for common 5.7 V8 configurations
Below are representative numbers from popular 5.7-liter V8 installations to illustrate the range you’ll encounter in consumer vehicles.
- Early 5.7L Hemi (roughly 2003–2008): about 345 horsepower.
- Later non-hybrid 5.7L Hemi (roughly 2009–2018 in various Dodge/Chrysler/Jeep models): about 372–375 horsepower.
- Modern 5.7L Hemi with mild-hybrid assist (2019 onward, such as in the Ram 1500, Grand Cherokee, Durango): about 395 horsepower.
Keep in mind that these figures reflect official engine ratings and can vary by application and market. Specific models can have trim-specific tuning that moves output up or down slightly.
How to verify the exact horsepower for your vehicle
To confirm the precise horsepower for your specific car, consult official sources tied to your VIN and trim. The listed figure on the window sticker (Monroney label) is the authoritative number for that exact vehicle, and the manufacturer's website or owner's manual often lists the engine spec as well.
Where to find horsepower information
Useful places to check include the window sticker, the owner's manual, the official automaker site for your model-year, and dealer documentation. If you’re unsure, a dealer can pull the exact specification using your VIN.
Notes on variation and performance expectations
Even within the same engine family, factors like cooling, exhaust tuning, and emission-control systems can slightly affect peak horsepower figures. Real-world performance may differ from the manufacturer’s stated horsepower due to driveline losses and testing conditions.
Summary
In practice, a 5.7-liter V8 delivers roughly 350–400 horsepower, with the most recent Ram 5.7L Hemi models rated around 395 hp. The exact number depends on the car and year, so always check the official spec for your vehicle. These engines also provide strong torque and broad, usable power across the RPM range.
