Diesel engines have been known to be the force behind the power and performance of construction equipment and marine vessels for more than ten decades (100 years) now.
The high performance, durability, and efficiency delivered by diesel engines through high torque and increased horsepower are highly crucial for heavy-duty pickup trucks.
Most pickup trucks are now fitted with diesel engines to empower them with high torque levels and horsepower to enable them to accelerate swiftly without any glitches.
Trucks with diesel engines deliver the optimum level irrespective of the amount of load they are towing. Meanwhile, hybrid pickups are also becoming popular in the automotive industry.
It is crucial to find out the best diesel engine to enable you to choose the truck with any of these types of engines for your industrial activities.
The following are some of the best diesel engines you can trust to deliver the required level of torque and horsepower for high performance, durability, and efficiency.
The power stroke diesel engines used by Ford trucks were manufactured by Navistar International.
However, the Ford 6.7L Powerstroke became the first to be directly manufactured by Ford. This was an attempt to keep the company relevant in the diesel-powered vehicles automotive industry.
The Ford 6.7L Powerstroke diesel engine was designed as a savior for the 6.4L and 6.0L Power Stroke diesel engines, which were somewhat problematic. It became the best diesel engine in Ford.
The Ford 6.7L Powerstroke diesel engine boasted of 390 horsepower output, as well as torque up to 735 lb-ft initially. But these figures were upgraded -engine power up to to 400 horsepower and torque up to 800 lb-ft after the engine was released.
Now, the most recent 6.7L Powerstroke features an outstanding set of product features/specifications.
Engine Specifications
Cummins Inc. released the latest B-series diesel engine – 6.9L Cummins, which was intended to be used in the Dodge Ram in 2007. This engine was a replacement for the overstayed 24-valve 5.9L Cummins.
The 5.9L was going to be replaced because it could no longer keep up with the stringent emissions standard that was constantly increased over time.
The 6.9L Cummins supersede its predecessors in terms of features. They are designed with some of the new features, found only with the best diesel engines, which most truck lovers wouldn’t trade for anything else.
Engine Specifications
The Duramax 6.6L L5P was introduced by Chevrolet in 2017 to replace the former Duramax LML with similar displacement. It was introduced as the power-packed diesel engine for the Chevrolet pickups (HD-series), as well as the GMC trucks.
This new 6.6L Duramax diesel engine features upgraded cylinder heads (revised), a sophisticated turbocharger (variable-vane), and an improved camshaft. It also comes with 445 hp, as well as torque up to 910 lb-ft.
This diesel engine comes equipped with the capacity to deliver high performance, durability, and efficiency to enable pickup trucks to tow loads from one place to another without hitches.
Engine Specifications
After several decades, the 7.3L Powerstroke is regarded as the most reliable diesel engine among its sophisticated counterparts. This diesel engine was a product of the joint venture between International Navistar (now Navistar International) and Ford.
The 7.3L Powerstroke diesel engine was manufactured to be used in Ford’s heavy power-packed trucks. The diesel engine was designed with a technology (HEUI) that helped eliminate the need for a solely dedicated injection pump.
In place of the injection pump, high-pressure engine oil created hydraulic pressure in each injector to inject low-pressure fuel under substantial force. The 7.3; Power Stroke was unique and strong enough to overcome loads due to the remarkable features/specifications of the engine.
Engine Specifications
The 6.6L Duramax LBZ was manufactured and first used in 2006 to replace the LLY Duramax that was manufactured before it. However, the 6.6L Duramax LBZ was short-lived.
The LBZ Duramax was terminated after the Duramax LMM 2007 model was produced to further replace the LBZ Duramax because of the multiple faults that characterized its use.
One of those multiple faults was an untimely piston failure. It was more or less like a remanufactured engine.
The 6.6L Duramax LBZ had a couple of features that users managed to explore until the LMM Duramax later replaced it in 2007.
Engine Specifications
Other diesel engines with sophisticated designs, features, and specifications that deliver high performance, durability, and efficiency include the following:
The most reliable diesel engine is the powerful 7.3L Powerstroke. The engine comes with sophisticated features that make it outstanding among other diesel engines. Its features include 235 horsepower and 500 pound-feet of torque.
Ford’s 7.3L diesel engine was already manufactured before some new rules and regulations were introduced to control the pattern adopted for the manufacture of diesel engines. And now they outshine most of their recent diesel engine counterparts.
In terms of reliability, the 7.3L Power Stroke is still the best diesel engine in 2021. Since it was manufactured, it has retained that worth.
The Ford’s 7.3L Powerstroke’s engine block and internal compositions were over-engineered and over-built for the capacity of the trucks’ power output. The engine is designed with a B50 Life which guarantees it to last about 350,000 miles.
Some manufacturers in the automotive industry produce very sophisticated engines, to the point that picking the best engine among others is quite challenging. Just like selecting the best among series of electric vehicles requires critical analysis of several factors.
However, with critical analysis and surveys to find out what car owners and expert vehicle enthusiasts think about these engines, it is pertinent to list some of the best diesel engines without mincing words. The following engines rank as some of the best diesel engines ever made:
Some of the companies that manufacture diverse kinds of sophisticated diesel engines with high performance, durability, efficiency, and a touch of excellence include the following:
One of the common yardsticks to measure the superiority of vehicle engines is the horsepower capacity. High horsepower guarantees swift and faster acceleration for vehicles irrespective of whether the vehicle is towing another vehicle.
The 6.6L Duramax L5P engine comes with about 445 hp against the 400 horsepower generated by the latest Cummins 24V Ram 6.7L diesel engine. This is an advantage that Duramax has over Cummins. However, both diesel engines rank among the best.
Some of the worst diesel engines happened to make the black-list because of their inability to produce the power required by the vehicles, as well as the minimal level of horsepower needed for fast acceleration and efficiency.
The following diesel engines are some of the worst diesel engines you can ever think of in the automotive industry:
Some of the engines outlined above were initially okay when they were first manufactured (for example, the VT-265 and VT-335). They became bad when the manufacturers decided to modify them from 6 cylinders to 4 cylinders, thereby altering their power output.
The longest-lasting diesel engine is the 5.9L Cummins 12-Valve 6BT. The engine possesses million-mile durability, with an outstanding 30 horsepower for fast acceleration. It also features up to 440ft-lbs of torque and a high-performance P7100 injection pump.
The Cummins is known to be the king of torque, ranking higher than Duramax and some other diesel engines. They feature up to 1,000lb/ft of torque.
If you need a diesel engine with a guarantee of longevity, you can’t go wrong by choosing the Cummins 5.0L 12-Valve 6BT diesel engine.
If you are asking, “Is Cummins the best diesel engine?” There is a reason why truck enthusiasts think Cummins is worth ranking as one of the best diesel engines for pickup trucks.
Cummins Inc. is known as one of the top-rank diesel engine manufacturers in the automotive industry globally. Cummins engines are respected for the level of torque and amount of horsepower they deliver, which guarantees swift acceleration on the road.
Work trucks require a great level of horsepower and torque to enable them to tow heavy loads at any time. This is precisely what Cummins diesel engines deliver; the necessary horsepower and torque.
No wonder Cummins engines are referred to as the king of torque. Cummins retained their position as one of the best diesel engines in 2020 and up to date.
Modern Ford trucks are powered with 6.7L Powerstroke engines. This is the fourth generation of engines that the diesel-powered trucks manufactured by Ford are fitted with. Most of the diesel engines were manufactured by Navistar International for Ford trucks.
The first power stroke diesel engine manufactured by Ford officially is the 6.7 Liter V8. Before this diesel engine was produced, other versions of Powerstroke were manufactured by Navistar International (formerly known as International Navistar) for Ford.
Pickup trucks are rated most especially by their engine capacity, which is determined by the level of torque and horsepower.
While choosing a pickup truck, identifying the best diesel engines is crucial because the engine is most likely the most important part of this particular type of vehicle.
Remember that a pickup truck’s capacity to carry a load and accelerate at an optimum level is highly dependent on the engine’s torque and horsepower.
Critically consider choosing from any of the heavy-duty pickup trucks’ diesel engines outlined above in this article.
