Primarily focused on the legendary 5.9 Cummins 12v and 24v and modern 6.7 Cummins engines, we cover everything from common problems and maintenance content, to best performance modifications, tuning guides, and more. Additionally, we dig into various other Cummins engines like the 8.3L and the 5.0L.
Now long retired, the 24-valve Cummins turbo-diesel that was in production from 1998–2007 has officially obtained legendary status. The 24v Cummins was the successor to the 12v Cummins, and some regard them as the two best turbo-diesel engines ever made. Not only are they incredibly reliable and dependable, but they are very popular in the…
While the 6.7 Cummins turbo-diesel is one of the best modern power plants on the market, it is far from a perfect engine. Unfortunately, one of the biggest issues is the Holset HE351VE “Variable Geometry Turbocharger” (VGT). The VGT is a common failure point on the 6.7 Cummins. One of the biggest issues is the…
For over a decade now, the Ford 6.7 PowerStroke and Dodge’s 6.7 Cummins have been the top of the line for turbo-diesel power plants. Yet, besides their displacement, they actually share very little in common. For starters, the PowerStroke is a V8 while the Cummins is an inline-six. However, they are two of the most…
If you were looking for turbo-diesel power in the 1990s and early-2000s, you had two main choices: Ford’s 7.3 PowerStroke V8 or Dodge’s 5.9 Cummins I6. These were some of the first modern diesels to have direct injection and turbochargers as standard, opening up entire new worlds of performance opportunities. Though now long out of…
Since it first became available for the 2007 model year, the 6.7 Cummins has made a solid name for itself as one of the most powerful and dependable turbo-diesel truck engines. The engine has 6.7 liters of displacement and is a traditional inline-6 style motor. Depending on the year and model, the 6.7L Cummins produces…
In hindsight, the 5.0 V8 Cummins inside the Nissan Titan XD did not live up to expectations. Nissan only produced the engine for four model years from 2016–2019, and it paled in comparison with their slightly larger 5.6 liter V8 gas engine. Power output was decidedly modest for a V8 turbo-diesel at just 310 horsepower…
While it has been out of production for almost two decades, the 24v 5.9L Cummins is still widely regarded as one of the best turbo-diesel engines ever made. Also known as the 5.9 ISB, the engine was the successor to the beloved 12v Cummins. Dodge produced the 24v Cummins from 1998–2007, where it made 215–325…
Among diesel truck enthusiasts, the 12-valve 5.9 Cummins has long been regarded among top engines. The original 12-valve Cummins turbo-diesel lasted from 1989–1999, making 160–215 horsepower and 400–440 lb-ft of torque inside the Dodge Ram. For the time this was pretty exceptional, but nowadays it’s relatively pedestrian by turbo-diesel standards. Luckily, there are a myriad…
Tuners are easily the best bang-for-the-buck mod for the Dodge 6.7 Cummins. We discussed tuners in our 5 best 6.7 Cummins mods guide, and had them at the top of our list as the best performance upgrade. Tuners can provide significant power gains from a simple plug and play device. There are a lot of…
The Cummins R2.8 turbo diesel crate engine is also known as the Repower 2.8. This small inline-4 diesel engine initially hit the markets around 2017. However, it’s not a very well known Cummins engine due to its competition with the legendary 4BT. Still, the R2.8 is a compelling diesel engine with plenty to offer. In…
The 5.9 Cummins was produced in two different variations by Dodge from 1989 until 2007. The first generation, known as the 6BT or 5.9 Cummins 12v, was produced from 1984 until 1998. It produced 160-230hp and 400-440lb-ft. of torque. The ISB 5.9 Cummins 24v entered in mid-year 1998 and was phased out after 2007 for…
Currently the longest standing diesel engine, the 6.7 Cummins produces 420hp and 1,075lb-ft. of horsepower. Initially launched in 2007.5, the 6.7 Cummins produced 350hp and 610-650lb-ft. of torque. While earlier years had stout power numbers for their time, it doesn’t quite compare to the 4-digit torque numbers modern diesels produce. Whether you have an earlier…
