Is the Ram 2500 6.4 Hemi a good engine?

In this blog post, we will answer the question: “Is the Ram 2500 6.4 Hemi a good engine?” We will discuss the Ram 2500 6.4 Hemi variants and talk about their specs. We will also discuss fuel economy, maximum miles, and durability. Additionally, we will discuss the common problems with the Ram 2500 6.4 Heme engine.  

Is the Ram 2500 6.4 Hemi a good engine?

Yes, the RAM 2500 6.4 Hemi is a good engine. The Ram 2500 6.4 Hemi is a powerful, strong, and reliable engine. This engine is one of the best engines that has been manufactured by Dodge. It has a remarkable rating and is powered by advanced technology to bring out the best. The Ram 2500 6.4 Hemi is an eight-cylinder engine.

Ram 2500 6.4 Hemi variants

There are two variants of the Ram 2500 6.4 Hemi, the Gas and diesel variant. Both these variants are common but they also have a few differences.

2500 6.4 Hemi V8

The 2500 6.4 Hemi V8 engine has variable cam timing to bring out the best horsepower rating. This engine is equipped with an eight-speed automatic transmission for a smooth drive. It also has a multi-displacement system along with the fuel saver technology. The 6.4 Hemi V8 engine has better horsepower that the Cummins diesel variant.

  • 140 HP – Horsepower
  • 429 lb. ft – Torque
  • Max towing capacity – 17,450 pounds
  • Max payload capacity – 4,010 pounds

6.7L Cummins Turbo Diesel 16

The 6.7 Cummins turbo diesel 16 variant is equally impressive with its specifications. This variant is known for its responsive and outstanding torque. It also has incredible towing performance. The diesel variant is equipped with a six-speed automatic electronically controlled transmission. Some of the unique features are low noise, less vibration, and harshness.

  • 370 HP – Horsepower
  • 850 lb. ft. – Torque
  • Max towing capacity – 19,680 pounds
  • Max payload capacity – 3,160 pounds

The 6.7 L Cummins Turbo Diesel 16 variant has better torque and an incredible towing capacity. However, the 6.4 Hemi V8 stands out with the max payload capacity and horsepower. Overall, both variants are impressive with their specs and you get to choose from them according to your preference. The 6.7 L Cummins is an upgrade of the 64. Hemi V8.

Ram 2500 6.4 Hemi specifications

The Ram 2500 6.4 Hemi arrives with some of the best engine specs. This engine is built to last long and deliver the best performance at the same time. The Ram 2500 6.4 Hemi has one of the best engines for hauling and towing and it has exhaust valves that are filled with sodium. They are durable and economical at the same time.

Engine specs

This engine is incredible and it has top-class specifications. It is constructed and molded with the latest technology. It also has a sturdy build and a decent fuel economy and range. Below are some of the key engine specs.

  • Engine type and required fuel – regular unleaded V-8
  • Displacement (liters/cubic inches) – 6.4 L/392
  • Fuel system – sequential MPI
  • Maximum horsepower @ RPM – 410 @ 5600
  • Maximum Torque @ RPM – 429 @ 4000
  • Transmission order code – DFX
  • Transmission description – automatic with OD
  • Number of transmission speeds – 8

Those were the key specs of the Ram 2500 6.4 Hemi. The Cummins Turbo Diesel engine is also available with the latest RAM editions. You can find this engine on the RAM models like Longhorn, Tradesman, Big Horn, and Laramie. The V8 6.4 Hemi is also available on the same models including the limited RAM Longhorn version.

2500 6.4 Hemi fuel economy

  • Given the power and ultimate performance, the 2500 6.4 Hemi has great fuel economy. The RAM models with these engines usually arrive with a 32-gallon fuel tank. 
  • The Hemi provides 12 miles per gallon in the city, 18 on the highway, and 15 when combined. This fuel economy is applicable when the engine is running in the four-wheel drive mode.

2500 6.4 Hemi maximum miles

  • The 2500 6.4 Hemi has a solid maximum mileage of 250,000 miles. Unlike most engines, the 2500 6.4 Hemi provides better mileage and it can cross 250,000 miles if maintained well. 
  • These engines are reliable enough to be sued for a long time and they can rack up those miles with ease. In some cases, owners have stated to have crossed 300,000 miles.

2500 6.4 Hemi durability

  • The 2500 6.4 Hemi is one of those durable engines and there is a reason behind it. This is more like a smart engine and it has been redesigned to bring out the best performance and durability. It is extremely good for towing and hauling. It is also economical and has been one of the best engines that are available in the market.
  • The 2500 6.4 Hemi is durable since it has modified exhaust valves. These valves consist of sodium that if filled inside to last longer. It has a cooler combustion chamber and it is more efficient since the V8 Hemi engine warms up. 
  • The sodium inside the valve melts and transfers the heat into the valve guide away from the combustion chamber.
  • The 2500 6.4 Hemi is durable since it has high-tech aircraft-grade stainless steel exhaust gaskets. They also have oil jets for cooling the pistons and are installed at a high-volume oil cooler. 
  • The improved cooling system has fluid dynamics to analyze and solve problems. Hence, the engine is perfect for long-lasting durability.

2500 6.4 Hemi common problems

The 2500 6.4 Hemi is an incredible engine, but it also arrives with a couple of common problems. These are not major issues, but they can occur over a point in time. Here are some of the common problems of the 2500 6.4 Hemi engine.

Multi-displacement system faults

  • The multi-displacement system is a common issue but this has been reported only after years of usage. On the other hand, not every 6.4 Hemi has reported such issues. 
  • MDS is one of the best technologies but there are been a few issues like solenoid failures. Spark plugs have also been reported to shut down quickly when running too cold.

Engine tick problems

  • Engine ticking has been reported apart from the Multi-displacement system faults. Despite the ticking, these issues will not affect the vehicle’s longevity and reliability, and performance. In rare cases, you might need to work on the engine if the ticking continues.

Misfires and check engine light

  • Another few common issues are misfires and the check engine light. Misfires are common on most engines. You might notice misfires a couple of times and you might also receive a check engine light. These are not major concerns are will not affect the durability of the vehicle.
  • Misfires can happen due to fault codes, rough idle, or stuttering. There is nothing that cannot be fixed and these are pretty common issues that occur on most engines.

Transmission failures

  • Transmission failures have been reported but they are not too common in the 6.4 Hemi. These issues can occur due to various symptoms like clunking sounds, rough shifts, and missing gears. 
  • There are also a few other symptoms that indicate such problems. This also depends on the extent of the issue. In rare situations, you might need a new transmission for the FCA 6.4 Hemi V8.

Plugs and coil issues

  • Spark plugs and coils are also a few issues that have been reported. These issues take place over a period due to wear and tear and replacement is pretty common.
  •  You might find a damaged spark plug every 80,000 miles. Overall, the common problems with the 6.4 Hemi are not too severe and these problems also take place in other engines.


In this blog post, we have answered the question: “Is the Ram 2500 6.4 Hemi a good engine?” We have discussed the Ram 2500 6.4 Hemi variants and talked about their specs. We have also discussed fuel economy, maximum miles, and durability. Additionally, we have discussed the common problems with the Ram 2500 6.4 Heme engine.  


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