5.7 Hemi is a third-generation engine from HEMI. This powerful engine was launched over 3 decades ago and has undergone successive improvements over the years to enhance its performance, reliability, and fuel efficiency.
With proper care and maintenance, the 5.7 HEMI can deliver without problems for up to 300,000 miles. But how much horsepower does a 5.7 HEMI have? In this article, we will tell you how much horsepower this powerful V8 engine delivers.
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5.7 Hemi horsepower
A 5.7 Hemi engine delivers 395 horsepower and a whooping 410 lb-ft of torque. With this powerful engine, you attain 0-60mph in 5.2 seconds.
The incredible power that this powerful engine delivers is one of the reasons why it has powered some flagship vehicles for nearly three decades.
This engine maintains a perfect balance of horsepower, torque, and fuel efficiency. It is also equipped with an active exhaust that creates the signature dodge sound. Its maximum towing is also impressive with the ability to move up to 11.610 lbs.
What year does the 5.7 Hemi have the most horsepower?
The current 5.7 Hemi engine that was produced in 2013 has the most horsepower. This engine had major upgrades, including the installation of the coil on the plug ignition system that reduced emission and improved combustion, the addition of variable camshaft timing (VCT), and modification of the cylinder heads that increased airflow by 14%, and improved manifold that optimized power and torque.
| Engine year | Peak Horsepower |
| 2013 to current | 395 |
| 2009-2012 | 383 |
| 2003-2008 | 345 |
How easy is it to add more horsepower to a V6 engine?
The V6 engine is one of the most powerful engines on the market. However, you can still get more power from a V6 engine by performing some basic changes. Below are some of the easiest ways to get more power from a V6 engine.
Increase the amount of air flowing into the engine
One of the easiest ways to increase the horsepower of a V6 engine is by increasing the amount of air flowing to the engine. The air mixes with fuel in each cylinder to produce combustion.
Increasing the amount of air flowing into the engine means that the engine will burn more fuel thus increasing horsepower. One of the simplest ways to increase a V6 engine horsepower is by replacing the factory air intake with a performance aftermarket cold air intake. This process is quite affordable and can be completed within an hour.
Increase the amount of fuel going to the engine
Another easy way to increase horsepower to a V6 engine is by increasing the amount of fuel that flows into the engine. While this change will decrease the fuel economy of the engine, it will significantly increase the engine’s horsepower by enhancing combustion.
You can increase the amount of fuel going into the engine by replacing the engine control unit that monitors the electronic fuel injection with a performance computer chip. This upgrade is relatively inexpensive and simple. In fact, you can perform this change on your own.
Increase the amount of air flowing out of the engine
Another easy way to increase the horsepower of a V6 engine is by increasing the amount of air exiting the engine. The hot air produced by the engine needs to exit the engine via the exhaust system.
The easier and better your V6 engine is able to expel this air, the more horsepower the engine will produce. Replacing the factory exhaust system and the header with a performance aftermarket exhaust system and header will allow more hot hair to flow out of the engine, thus increasing the engine horsepower.
Are Hemis fast?
YES, Hemis are incredibly fast. In fact, they are among the fastest and most reliable engines on the market. Pistons on Hemis usually have a higher compression ratio that quickly delivers more power to the car.
Their cylinders have a domed head as opposed to the traditional flathead and also feature a hemispherical combustion chamber that provides more horsepower than a conventional engine.
The unique engine design minimizes heat loss and increases peak pressure, making Hemis incredibly fast and efficient. A 5.7 Hemi can get you 0-60mph in 5.2 seconds.
How much horsepower can you add to a 5.7 HEMI?
You can add up to 200 horsepower to a 5.7 Hemi depending on the tuning stage. Stage1 tuning of the 5.7 Hemi which includes making basic changes to the engine like installation of air filter, de-restricting the exhaust and engine remapping can add up to 50 horsepower to a 5.7 Hemi.
Stage 2 tuning which includes replacing the original catalytic converter with a sports catalyst, and upgrading the intercooler can add up to 100 horsepower to the 5.7 Hemi.
Stage 3 tuning which involves the installation of bigger capacity fuel injectors, fuel pump, and turbocharger can add between 150 to 200 horsepower to the 5.7 Hemi.
Can you turbo a 5.7 HEMI?
YES, you can turbo a 5.7 Hemi to boost the car’s performance. In fact, most motorists with a 5.7 Hemis usually add a turbo to boost the performance of their engines.
Adding an aftermarket turbocharger to a 5.7 Hemi will increase the amount of cold air entering the engine and this can increase the engine’s horsepower by approximately 40-60. This is a significant increase to a car that already gets a 395 minimum horsepower.
How much horsepower does a supercharger add to a 5.7 Hemi?
If you want ultimate power from your 5.7 Hemi engine, you can add a supercharger. However, we have to caution you that you should only add a supercharger to your 5.7 Hemi if you are certain you can handle the incredible power that it will add to your car.
Installing a supercharger to a 5.7 Hemi can add between 125 and 160 horsepower. This is an incredible boost to an engine that is already very powerful.
Final verdict
The 5.7 Hemi is one of the most powerful engines on the market. The engine has been around for a while and has undergone successful modifications that have increased its performance, fuel efficiency, and reliability.
A stock 5.7 Hemi delivers up to 395 horsepower. When tuned, this powerful engine can deliver up to 550 horsepower.
