6.4 Hemi vs 6.7 Cummins Engine

6.4 Hemi vs 6.7 Cummins Engine

What’s the first thing that comes to your mind when you think of your dream engine? It’s the rumbling sound that makes everyone aware you are around. You think of a beast that has got unmatched power and torque.

Hemi and Cummins are the sorts of engines that have been featured in high-performance rides throughout decades. They are the ultimate legends when it comes to engines. The 6.4 Hemi and 6.7 Cummins are no exceptions.

6.4 Hemi vs 6.7 Cummins Table

These are top-of-the-line engines that cater to a wide range of vehicles. This article will help you pick the right one for your ride.

This V8 has a 6.4-liter naturally aspirated gasoline engine

This has a 6.7L Turbo-Diesel engine

Produces horsepower of up to 485. Thus there is plenty of power under the hood.

Produces a whopping 400 hp despite being diesel-powered. So you make zero compromises.

Cranks out 429-475 ft-lb of torque. This makes traveling and towing effortless.

850 - 1000 lb-ft of torque is generated by this beast. Used for heavy-duty towing purposes.

The engine block is built using cast iron and has piston cooling jets. It follows a deep-skirt design

The engine is manufactured using compacted graphite iron by TUPY. This proves the engine's optimum strength and reduces its weight.

It features a cam-in-block variable valve timing (VVT) that utilizes a hydraulic cam phasing system

It features forged steel connecting rods instead of powdered metal rods used in previous engines

Comes with the latest tech that ensures performance and efficiency. Multi-Displacement System or MDS is one of them. The system saves up fuel by restricting its flow into the cylinders when not needed. The valve lifters are also made inactive in the process to eliminate pumping loss.

Comes with an improves exhaust valve and rocker arm. The Bosch CP4.2 provides max injection pressure of 29,000 psi. This improves reliability. It features increased cooling capacity that keeps the engine in good shape.

Used in vehicle models like the Ram series, Dodge Challenger SRT8, Dodge Charger, and other performance vehicles.

 Used in high-performance trucks

Why Compare

There seems to be a cold war going on regarding the 6.4 Hemi and 6.7 Cummins as both are extremely good in terms of performance and cost. This comparison will provide you with an in-depth idea about the engines and help you make your choice.

Main features of 6.4 Hemi

This V8 has a 6.4-litre naturally aspirated gasoline engine that produces a horsepower of up to 485 and Cranks out 429-475 ft-lb of torque. It’s a powerful engine capable of tackling any amount of loads and will rush through extreme weather conditions.

Efficient Technology

A powerful engine needs efficient technology and the 6.4 Hemi has all those onboard. It comes with the latest tech that ensures performance and efficiency. The Multi-Displacement System or MDS saves up fuel by restricting its flow into the cylinders when not needed. The valve lifters are also made inactive in the process to eliminate pumping loss. Thus you get a better mileage included with the power.

Durability

As said before, the 6.4 Hemi is built to last. The engine block is built using cast iron and features piston cooling jets. These engines will last for decades if taken well care of. A 6.4 Hemi will easily last at least 250 000 miles with little investment in maintenance and checkup.

Main features of 6.7 Cummins

The 6.7L Turbo-Diesel engine produces a whopping 400 hp despite being diesel-powered. This beast generates 850 – 1000 lb-ft of torque. The increased stroke length adds up to be a strong factor for the engine. This makes your heavy-duty towing a fun experience.

Heavy-Duty Engine

The engine is manufactured using compacted graphite iron by TUPY. This provides the engine optimum strength and reduces its weight. Besides, it features Forged steel connecting rods instead of powdered metal rods used in previous engines. This engine keeps on running in all weather conditions and performs consistently on all tracks.

Reliability

The 6.7 Cummins has been a reliable partner for truckers all over the country. They require little maintenance and deliver that extra bit of torque when you need it. The engine comes with an improved exhaust valve and rocker arm. Besides, the Bosch CP4.2 provides max injection pressure of 29,000 psi. It features increased cooling capacity that keeps the engine in good shape.

Our Verdict

The 6.4 Hemi and 6.7 Cummins are top-shelf engines that offer nothing but the best. These engines are the perfect combination of raw power and reliability.

It finally comes down to your selection between a 6.4 litre and a 6.7-litre engine. As the stroke length increases in the 6.7 Cummins, it will deliver more power with each stroke. Besides, one run in gasoline and the other in diesel. You also get the torque advantage in the case of the 6.7 Cummins.

If you want the extra power and torque, we recommend that you go with the costlier option of the 6.7-litre engine. Otherwise, the 6.4 Hemi does a fine job of ticking all boxes.

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How many miles will a 6.4 Hemi last?

Answer: Hemi engines are well built and powerful. They have been providing service to all sorts of vehicles for decades. A 6.4 Hemi will easily last at least 250 000 miles if taken well care of. The maintenance cost is also satisfactory.

What is high mileage for a Cummins diesel?

Answer: Cummins diesel engines can run for 800,000 miles at least with slight tweaks and maintenance in between. These are extremely reliable heavy-duty engines that go on and on.

 

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