A White 3rd Gen Cummins revving it's diesel engine in the grass parking area in front of a drag strip.

Diesel Talk: What it Takes to Build a 850hp 5.9 Cummins

Condensing diesel perfection into a single picture is a tall task, but if you were to try... this would be as close as it gets. A decade ago, when you thought about diesel trucks, you thought of a workhorse. Hauling equipment, livestock, and staying filthy was the norm. After the social media surge, this is no longer the case.

In today's world, diesel trucks have taken many forms. Lifted, squatted, stanced out... whatever it may be, creativity has taken over the truck world and for good reason. Not only are these trucks durable, but they are simply breathtaking if taken care of. With the right modifications, you can turn your grandpa's farm truck into a corvette killer.

In this article we are going to be taking a dive into Fabian Lopez's 3rd gen Cummins build, and what a build it is.


A performance modified silver 3rd gen Cummins at a truck meet.


The Shoes

The tires opted for on this build were Nitto NT420v in 295/30/R22. For wheels, he went with the 22x12 JTX Forged Concave series. The combination of forged wheels and Nitto 420v's matches well with the profile and color of the truck.


Under The Hood

Under the hood of this 850hp 5.9 Cummins is nothing to joke about. The parts list we were given was too long to go through each individual part in depth. We will instead list out the parts in the build.

100% Over injectors from DDP

12mm CP3 from DDP

165gph Fass Fuel System

Billet sump from BDDeisel

Valve springs

Push rods

ARP 425 Head studs

472 Turbo & 1.0 Exhaust from Forced Induction

Zero Thermal housing blanket

Coolant bypass from Fleece

Upper coolant pipe from Full Send Diesel

Cal tracs from Calvert Racing

Built 48re with FMVB from Parker's Diesel

Trans pan from King Speed

High output trans fan

On3 Performance Intercooler

 Aftermarket radiator

B&M Ratchet shifter

Coolant overfill reservoir

Fleece Fuel filter delete

Vibrant Performance catch can

Auto Meter 4th Gen style gauges

Custom tuned 

 Hood of a 3rd gen cummins open at a car show


Building a Street Machine

Building a unit like Fabian's takes time, dedication, blood, sweat, and plenty of dollar signs. 850hp is enough to make easy work of modern sports cars... and who doesn't want to do that?

For more info on the build, reach out to Fabian on his Instagram.

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