2,500 HP 7.0L Cummins - Engine Builder Magazine

2,500 HP 7.0L Cummins

From basic repair work to full-blown competition vehicles, Derek Rose and his diesel shop, DNR Customs, does it all. They even built this 2,500 hp 7.0L Cummins engine, which makes the shop's Dodge 2500 one of the fastest and most powerful trucks in the country! Find out what went into this diesel build!

Diesel of the Week is presented by

Break, fix, repeat. That was Derek Rose’s philosophy when it came to learning what worked and what didn’t with diesel performance.

“That’s pretty much how the whole industry has evolved in my opinion,” Rose says.

With a background in racing Motocross and running a concrete business with his stepdad, Derek had an appetite to try something new, and the rumblings of increased diesel performance engine work intrigued him. On what he says was a whim, Derek decided to start a diesel shop called DNR Customs in Casco, MI, back in 2006.

“I used to race Motocross and once that was done and the extra money from that went away, I needed to find something to do, so I got my hands wet in in this field,” Rose says. “I started the shop on a whim. The diesel industry has always been there, but the performance side of things were really starting to boom at that time. We started by working on first Gen, mechanical 12 valves. That’s how I learned, and then the Common Rails came later on down the road.”

From 2006 to 2009, Derek was still working in his concrete business while also running DNR Customs. For those three years, DNR was working on old 12 valves and doing exhaust installs for customers.

Over the years, the business evolved and today the shop works on everything from your basic diesel repair to full-blown competition vehicles for sled pulling or drag racing.

“We do a lot of custom fabrication stuff here too such as custom piping, turbo builds, roll cages, suspension work and things like that,” he says. “We also do transmission stuff. Our two biggest engines are Dodge and Ford. We’re probably 20% Chevy, but our main thing is doing a lot of Cummins and Powerstroke stuff.

“We do a handful of sled pulling trucks and drag trucks, but our average customer is the street customer who is towing his camper on the weekends and it’s a work truck during the week. That customer is our primary focus.”

DNR has six full-time employees, including Derek, and is a 5,000 sq.-ft. shop with four service bays and one fabrication bay. For its high-performance machining work, DNR uses Freedom Racing Engines, but does everything else in-house.

As the performance side of the diesel industry kept growing, Derek and the shop thought it would be good to have a dedicated race truck for DNR to run.

“Our own shop truck, which started out at 800-900 horsepower, has kept evolving over the years into what we have now,” Rose says. “We have one of the most powerful Common Rail Cummins there is.”

With 900 horsepower in the truck 8 years ago or so, the shop was constantly breaking things and not having much fun. Derek decided to invest in a dedicated race rig.

“That’s where the blue truck came from,” he says. “We actually bought a wrecked truck from a salvage auction. It has transformed over the years from a 1,000-horse street truck into a 2,500 horsepower drag truck that is one of the top four-wheel drive trucks in the country currently. We’re looking to break the record for time for the quickest four-wheel-drive diesel ever in the 1/8th-mile. The record is a 4.97, so we’re looking to go 4.96 in the 1/8th. We went 5.04 a few weeks ago with it.”

To get the 2006 regular cab, Dodge 2500 moving that quick, DNR Customs started the new engine build with a Hamilton Cams 7.0L Cummins-based block.

“We get the block from Hamilton and Freedom Racing Engines did the machine work,” he says. “On top of that, the block gets sleeved, has girdle work and firing work done to it too. We run a 1˝ deck plate on top with 1˝ longer Wagler rods, Diamond pistons and a stock Cummins crank. The engine has a Freedom Racing cylinder head and Freedom Racing side draft intake. We use Dynomite Diesel’s Super Mental injectors that are roughly 500-600% over stock. We used Mahle bearings and Trend Performance valvetrain components. We have three BD Diesel 12mm CP3s. The engine uses a dry sump oiling system, has a two-stage nitrous system and a water-to-air intercooler system. We also run a single, Forced Induction, 102mm, Garrett turbocharger.”

Aside from being a very, very quick truck, DNR’s 7.0L Cummins engine is very, very powerful as well. In fact, the truck and engine combo holds the record for most chassis dyno power.

“We did 2,503 horsepower and 3,789 ft.-lbs. of torque,” Rose says. “We also won the Ultimate Callout Challenge this year and took second the year before. We won the chassis dyno last year as well. We’ve been pretty much the most powerful truck in the country on the chassis dyno two years in a row.”

With the Dodge 2500 and 7.0L Cummins in tip-top shape, Derek says he plans to defend the shop’s title at the 2020 Ultimate Callout Challenge.

“We’re planning to go back to defend our title at Ultimate Callout Challenge next year,” he says. “We don’t plan on changing a lot of things because everything is working great. It’s taken years to get the combo correct and the truck needs nothing. We plan on just revamping everything this winter and refreshing everything and going back swinging again.”

With this set up, we have no doubt there are more horsepower and ET records on the horizon for DNR Customs and its Dodge 2500!

The Diesel of the Week eNewsletter is sponsored by AMSOIL.

If you have an engine you would like to highlight in this series, please email Engine Builder magazine’s Editor, Greg Jones at [email protected].

You May Also Like

Compound-Turbo 6.0L Powerstroke Engine

Justin Gerebizza acquired a fully built ‘06 F-350 looking to achieve the 1,000-hp mark with a compound-turbo 6.0L Powerstroke engine. This Diesel of the Week is even more impressive when you realize it was built in 2015.

A seasoned owner of 6.0L Powerstroke engines, Justin Gerebizza’s journey started with an impressive ‘05 F-250, running mid-12s in the quarter mile and boasting around 650-rwhp. His unyielding pursuit of greater performance led him to acquire a fully built ‘06 F-350, a canvas upon which he reached the 1,000+ horsepower mark. This Diesel of the Week is even more impressive when you realize it was built in 2015. The details of the build were first reported on by DrivingLine and contributing editor Mike McGlothlin. Below is a recap!

Turbocharged LML Duramax Engine

We all know Tony and Tyler Burkhard of Dirty Hooker Diesel have some awesome drag racing and truck pulling Duramax powerhouses. But, the shop’s employees also have some awesome diesel combos. Check out Evan Berry’s turbocharged LML Duramax diesel engine!

Chase Wells’ Turbocharged 6.8L Cummins Engine

Chase Wells and his team at 1 Way Diesel Performance are capable of all sorts of different diesel builds from show stoppers to all-out race vehicles. This week, we highlight one of Chase’s own trucks, which features a single-turbo 6.8L Cummins engine! Check it out.

Compound-Turbo 6.0L Powerstroke Engine

Tyler Lambert’s Ford F-250 started as a project with a simple goal – to extract as much power as possible. Equipped with a 6.0L Powerstroke engine, the truck underwent a series of transformations, including a compound-turbo upgrade, that elevated it to the powerhouse it is now.

6.0L Powerstroke engine
First-of-its-Kind Compound-Turbo L5P Duramax Engine

While incredibly rewarding, nothing about this L5P Duramax build was easy for Lead Foot Diesel Performance – everything was custom or a first. From the billet crank to the one-off compound turbos, this L5P Duramax is impressive. Check it out!

L5P Duramax engine

Other Posts

AMSOIL’s New Specially Formulated Car Care Products

AMSOIL has launched a line of premium car-care products engineered to help vehicles shine brighter.

AMSOIL car care
Why Your EGR Cooler Will Fail

In this episode of AMSOIL Garage we discuss the EGR Cooler, an emissions device that reroutes exhaust gases back through the engine to be burned a second time. This device sounds like a good idea, but it can cause issues for your engine, and due to the environment the EGR Cooler is placed within, the

Fire Rings for a Better Sealing Diesel Engine

As the typical diesel engine continues to see more performance, a simple job like fire ring installation can go a long way toward keeping your engine together and working properly.

fire ring block
The Impact of Diesel Fuel Injectors

Diesel fuel injectors are an essential component of any diesel engine and play a crucial role in performance and efficiency.

diesel injectors