6.7 Vs 6.4 Powerstroke DLT Kit: Which One You Should Choose?

6.4L and 6.7L diesel engines are both V8 turbocharged and deliver excellent performance. Of course, as the later model, 6.7 power stroke diesel engines deliver slightly better horsepower, torque, and engine displacement capacity. These two engines are renowned for their power and durability, but with a power stroke DLT kit, you can enhance their performance.

But for this, you must see a 6.7 vs 6.4 power stroke DLT kit to know which is better. Also, you will know if you can interchange the 6.4L and 6.7L pipes for the DLT kit. It will be crucial to upgrade the engine performance, so continue reading.

What Is 6.7L Power Stroke?

The 6.7L Power stroke is a diesel engine produced by Ford Motor Company. It has gained recognition for its remarkable power output and efficiency.

The 6.7L diesel engine has better power and performance. The 6.7L Power stroke is known for its impressive power output with factory-setting at 735 lb-ft at 1,600 rpm. Also, with flash, some variants can produce over 1,000 lb-ft of torque at full strength. It translates into exceptional towing capabilities and acceleration.

The standard displacement is 406CI, which is more than required in most cases. Also, despite its robust performance, the 6.7L power stroke has excellent fuel efficiency. It has the most industry-advanced turbocharging and fuel injection technologies. All these will contribute to a more economical engine.

Ford has put a strong emphasis on durability with the 6.7L Power stroke. It’s designed to withstand heavy-duty usage. Hence, it is a preferred choice for trucks that need to handle demanding tasks. Thus, you will see many Ford trucks and even pickups using the 6.7L power stroke engine.

It helps these vehicles to run across the country, contributing to the transportation industry. And you can still upgrade the performance of this brilliant engine with the 6.7 power stroke delete kit. It will improve the engine torque and let you travel through the country faster and better.

Pros of 6.7L Power stroke:

  • High power and torque output
  • Improved fuel efficiency
  • Exceptional towing capacity
  • Durability for heavy-duty applications

Cons of 6.7L Power stroke:

  • Initial purchase cost can be higher
  • Maintenance costs may be relatively higher

What Is 6.4L Power Stroke?

Ford also produces a 6.4L Power stroke. It is their formidable diesel engine option with a V8 turbocharged facility. At 393CI engine displacement and 650 lb-ft at 2,000 rpm factory torque, the 6.4L power stroke offers substantial power.

Therefore, it is a strong contender in the diesel engine market. Also, the 6.4L engine provides a balance between power and efficiency. However, it is less fuel-efficient than the 6.7L variant. The 6.4L power stroke still offers decent fuel economy for its performance class.

If you get an EGR delete kit for 6.4L, it can further downgrade the fuel efficiency. So, you must be careful about its fuel efficiency while getting the DLT kit. This engine has a reputation for exceptional reliability and longevity.

No doubt, it is a popular choice for those seeking a robust and long-lasting power plant.

Pros of 6.4L Power stroke:

  • Strong power output.
  • Good balance of power and efficiency.
  • Reliable and long-lasting.
  • Potential for cost savings compared to the 6.7L variant.

Cons of 6.4L Power stroke:

  • Lower fuel efficiency compared to the 6.7L variant.
  • Limited aftermarket support for modifications.

6.7 Vs. 6.4 Power Stroke DLT Kit: Key Comparisons

When choosing the right delete kit for a 6.7L or 6.4L engine, you must compare the two engines and find which EGR and delete kit will be suitable for it.

Criteria6.7L Powerstroke6.4L Powerstroke
Power OutputHigher power and torque outputIdeal for heavy-duty tasks
Fuel EfficiencyLower fuel efficiencyBetter balance of power and fuel efficiency
CostHigher upfront costHigher maintenance costsPotential cost savings
Aftermarket SupportExtensive aftermarket support for modifications and enhancementsLimited aftermarket support

Power Output:

6.7L Power stroke engine boasts higher power at 390hp at 2,800 rpm and torque output at 735 lb-ft at 1,600 rpm. So, it is an ideal choice for heavy-duty tasks and applications where maximum power is a priority. Its exceptional power allows it to handle substantial loads and challenging terrain with ease.

6.4L Power stroke is less potent than the 6.7L variant with the 350hp at 3,000 rpm horsepower. So, a 6.4L Power stroke still delivers a strong power output. It strikes a balance between power and efficiency, making it suitable for various tasks without excessive fuel consumption.

If you want more performance, you can use the 2017 f350 delete kit for the 6.7L diesel engine too.

Fuel Efficiency:

The 6.7L Powerstroke, despite its impressive power, tends to have lower fuel efficiency than the 6.4L variant. This is a trade-off for the substantial power it provides.

The 6.4L Powerstroke offers a better balance between power and fuel efficiency. It offers decent performance and is more economical in terms of fuel consumption. So, those who are fuel-conscious will love it.


The 6.7L Power stroke engine typically comes with a higher upfront cost. Additionally, its more complex technology and components may lead to higher maintenance costs over time.

The 6.4L variant often offers cost savings, both in terms of the initial purchase price and potential maintenance expenses. It can be a more budget-friendly option for those looking to save on their diesel engine investment.

Durability and Longevity:

The 6.7L Power stroke is designed to withstand heavy-duty usage. It can excel in applications where longevity and robustness are essential. So, it is a dependable choice for demanding tasks. The 6.4L Powerstroke also offers impressive durability.

It can handle prolonged use and continue to perform reliably over time.


You can install the delete kit to improve the engine torque and horsepower of the 6.7L. With the DPF delete kit and proper tuner, the engine will quickly get an upgrade. So, your trucks and pickups will deliver better power to travel faster across different states.

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