5.9 Magnum Vs 5.7 Hemi: Which Is More Suited For You?

What is the difference between 5.9 magnum and 5.7 hemi? The answer depends on several factors, including size, power and torque, fuel economy, rust resistance, etc. The 5.9 Magnum is a popular engine size for cars. It is solid and efficient. On the other hand, the hemi engine size is a less common option, but it is still available.

Some people believe that a 5.9 magnum engine is better than a 5.7 Hemi engine. But which one will be best? 5.9 magnum vs 5.7 hemi?

Here, we will show you the best engine comparison for your vehicle.

5.9 Magnum Vs 5.7 Hemi

Key Points5.9 Magnum5.7 Hemi
Engine powerFasterComparatively lower than 5.9 Magnum.
HPUp to 400 HP depends on the usage of dieselUp to 340 HP depends on the use of gasoline
PerformanceMore powerfulLess
Towing Capacity11,500 lbs11,400 lbs

Let’s find out the comparison in detail.

Comparing the Size

When you are looking at the engine size of your car, make sure to research the power and size of the engine. An engine in the 5.9 magnum size will be faster than an engine in the 5.7 hemi size.

The speed of the 5.9 magnum engine is due to the higher compression ratios, which is to blame for its increased power.

The power of the 5.7 Hemi engine is due to its lower compression ratios and their corresponding increased fuel economy. Furthermore, the 5.9 magnum engine is larger overall, so it will heat up more quickly than the 5.7 Hemi engine.

HP Dissimilarities

The 5.9 Magnum is a 6.4-liter diesel engine with 400 hp and 800 lb-ft torque. You can get 345 horsepower and 390 lb-ft of torque from this engine.

Despite the fact that the 5.9 Magnum is now more impactful than the 5.7 Hemi, it also conserves as much fuel as the latter because it is facilitated by diesel, which is less efficient than gasoline-powered engines to improve fuel per hour ( km / h) on the mean value.

The 5.7-liter Hemi is a V8 engine that generates 370 horsepower and 410 pound-feet of torque. There is a V10 engine in the 5.9 magnum. It tends to make 500 hp and 525 lb-ft of torque.

However, both propellers are impressive. The 5.9 Magnum has far more pounds of thrust and rotational speed than the 5.7 Hemi in engine performance. As a result, the 5.7 Hemi consumes less fuel per mile than the 5.9 magnum.

Read Also: F150 Ecoboost Vs Dodge Ram Hemi: What’s The Best Choice?

Differences On Efficiency

When looking to buy a car, it’s essential to understand engine efficiency.The 5.9 magnum engine is more prominent and produces more horsepower than the 5.7 hemi, which is less reliable and efficient. Because the 5.9 magnum has 359 cubic inches of space, it is bigger than the 5.7 hemi’s 345 cubic inches of space.

Unlike the 5.9 Magnum, which has a V10 engine, the 5.7 Hemi has a V8 engine. While the 5.7 Hemi is more fuel-efficient and accelerates faster than the 5.9 Magnum, it lacks the power necessary for steering or transporting large objects.

Engine Performance

The 5.9 magnum outperforms the 5.7 hemi in terms of towing capacity and maximum speed. In addition, it has a more significant displacement, which means that it can generate more power while consuming very little energy for each hour.

Now you may have a query on “is the dodge 5.9 magnum a good engine?”

However, if you want to buy the 2019 Dodge Challenger GT AWD or R/T Scat Pack, you can get the 5.9 magnum engine as an opportunity. Because it’s more powerful, it emerges with an eight-speed automatic gearbox rather than just a six-speed manual gearbox that arrives with the 5.7 Hemi engine in other cars.


When comparing 5.9 magnum and 5.7 hemi, the difference in cost isn’t that substantial. However, while the price of a 5.9 magnum is approximately $1,000 higher than that of a 5.7 hemi, the additional power and torque it provides is worth the possible expense for several commuters.

5.9 magnum Vs 5.7 hemi towing Capacity

The 5.9 magnum is capable of a maximum velocity of 130 miles per hour and a maximum payload capacity of 11,500 pounds.

On the other hand, the 5.7 Hemi can tow 11,400 lbs and reach 110 mph.

This Video Will Help You Too!

Frequently Asked Questions (FAQs)

is the 5.9 magnum a good engine?

However, because it is powered by diesel, the 5.9 Magnum uses more fuel per mile traveled than the 5.7 Hemi. This is because diesel engines are found less efficient than gasoline engines in order to improve power per mile traveled.

What’s the difference between HEMI and Magnum?

When it comes to size, the 5.9 Magnum is a popular engine. The 5.7 Hemi is a less common engine. Moreover, HEMI engines are solid, efficient, and small-scale. Midsize cars usually have a 5.9 Magnum engine. Magnum cars have more power and torque output.

Is the 5.9 L Magnum a Hemi?

Engines with a 5.9 Magnum displacement are referred to as Hemi engines. Machines with a 6.0 Magnum displacement are referred to as Magnum engines.

Final Verdict

Ultimately, we conclude our comparative evaluation of the 5.9 magnum Vs 5.7 hemi with the ending that each engine is excellent and highly recommended.

It would help to decide which alternative is better for you after considering those problematic facts. However, while both devices are very potent, the 5.9 magnum outperforms the 5.7 Hemi in power rating and thrust throughput.

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D Conroy

Meet our senior writer and content manager of Automasterx. He has worked in several mechanical garages and mastered different vehicle diagnoses and parts repair. He never stops until finding out the ultimate solutions for any vehicle fault code. However, ensuring the only solid solutions for each vehicle malfunction is his core part of the duty, alongside analyzing fault codes and signals.

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