Compound Turbo 6.7L Cummins Engine - Engine Builder Magazine

Compound Turbo 6.7L Cummins Engine

Many of the guys at the top of the diesel sled-pulling totem pole often use the 6.7L Cummins for their builds, both for its reliability and efficient power making potential. Michael Brown just finished up work on this Cummins that he'll be using this year at events like King of the Street. Check it out!

Diesel of the Week is presented by

It’s no doubt that sled-pulling requires a fairly powerful engine under the hood of any competition truck – propelling a ~55,000-lb. weight transfer sled across a dirt-packed track is no easy task. For that reason, competitors take a lot of time fine-tuning their truck and engine setups to produce the most effective and efficient combination.

The 6.7L Cummins is a mainstay in the diesel pulling world, most of all for its reliability and ease for making power. Many guys at the top of the totem pole boast a Cummins, albeit with different configurations of components, bolt-ons, and machine work. Chris Patterson was one of the guys we spoke with last year at UCC – his triple-turbo 6.7L Cummins engine really impressed us.

Recently, Michael Brown reached out to us about a similar build, which was also spec’d out by Chris at Unrivaled Diesel. “Chris and I assembled it together and he was a big help in this build,” Michael Brown says.

Located in Dixon, TN, just 40 miles west of Nashville, Brown is a mechanic for the United States Postal Service and works on semi-trucks. Outside of his day job, he works on Cummins trucks out of his small home-shop. For the past five years or so, he’s been involved in diesel competition, both competing himself and building competition engines for customers.

Last year was his first time competing at King of the Street, and this year he’s hoping to up the ante at the event and other competitions with this new build. The 6.7L currently sits underneath the hood of an ’07 5.9L truck, which he uses for pulling, but can still be street driven too.

“It’s a Hamilton Competition 6.7L block that still has coolant through it, the pistons are bored .020″ over, it has D&J standard billet rods and tool steel wrist pins, a Beans Machine 14mm girdle, and a Hamilton camshaft, tappets, rockers, and pushrods,” Brown says.”

The engine also features a D&J Stage 3 cylinder head, with a D&J Stage 3 billet intake manifold, oversized super alloy intake and exhaust valves, thread-in soft plugs in the head, titanium valve spring retainers, and heavy-duty extra-large intake seats. This Cummins performance cylinder head gets the intake flow up to 300 cfm (stock is 165).

On the fuel side, the engine has two Exergy 14mm CP3 pumps and Flux Performance 400% competition hybrid injectors. There’s also two AirDog 5G lift pumps.

Air is supplied to the engine via a compound turbo system, comprised of a 498 atmosphere and a 76mm manifold, both from Tater Built. Both are ball-bearing units, with a single wastegate to hot pipe.

“We run a bit of nitrous on it too,” he says. “It’s got a Nitrous Express Maximizer 5 with three little solenoids, and one larger.”

The current setup hasn’t been dyno’d since last year, but at that time, Brown’s Cummins made 1,510 horsepower. It only had one fuel pump at the time, and Brown plans on installing larger turbos in the near future which will definitely up the power even more.

Diesel of the Week is sponsored by AMSOIL. If you have an engine you’d like to highlight in this series, please email Engine Builder Editor Greg Jones at [email protected].

You May Also Like

415 cid Billet Cummins Engine in a Pro275 Cadillac

Ring Racing owner Jared Ring revealed a metamorphosis to this 2016 Cadillac ATS-V last week. The Cadillac is now equipped with radial tires and a 415 cid Cummins engine built by Freedom Racing Engines, and the combo just competed at Lights Out 15.

Cummins-powered Cadillac ATS-V Pro275 drag car

It was hard to ignore the big news coming from Ring Racing last week leading up to Lights Out 15. What can only be described as another major leap forward for the diesel racing world, Ring Racing owner Jared Ring revealed a metamorphosis of sorts to an already incredible 2016 Cadillac ATS-V, previously owned by Larry Larson of Street Outlaws No Prep Kings. The well-known Cadillac is now equipped with radial tires and a 415 cid Cummins engine built by Freedom Racing Engines.

Turbocharged 5.9L Common Rail Cummins Engine in a 1947 Ford

After sitting in his father-in-law’s backyard for a number of years, this 1947 Ford was gifted to Chase Wells’ wife. Chase owns 1 Way Diesel Performance and knew someday he’d bring the truck back to life. He did so using a 5.9L common rail Cummins engine on a special episode of Texas Metal’s Loud and Lifted. Check out the result.

1,000-HP Capable 6.7L Powerstroke Engine

Nick Stoner, a customer of Kill Devil Diesel, recently got his fully built 6.7L Powerstroke engine – a build Nick wanted to be capable of 1,000 horsepower. However, Nick is no longer building the truck the engine was going into, so this badass diesel engine is for sale. Check it out.

6.7L Powerstroke engine
Turbocharged 6.7L Second Gen Cummins Engine

Thanks to attending a truck pull event at an early age, Sean Purdy can’t shake his passion for diesel trucks and engines. He recently completed a fresh build on his 1999 Ram 2500 with a turbocharged 6.7L Cummins second gen-swapped engine.

6.7L Cummins engine
Turbocharged 5.9L Cummins Engine

As an industrial millwright, Devan Leeds has a lot of knowledge and skills with his hands. He’s also a thrill seeker when it comes to high-speed vehicles. Case in point, his ’03 Ram 2500, which features a rowdy, turbocharged 5.9L Cummins engine under the hood. Check it out!

Leeds Fabrication 5.9L Cummins

Other Posts

Hot Shot’s Secret Green Diamond 0W-20 Light-Duty Diesel Oil

Hot Shot’s Secret Green Diamond is formulated for use in GM Duramax 2.7 and 3.0 diesel engines that require Dexos D 0W-20 specification.

Wagler’s New Billet Duramax for Drag-and-Drive

Jeremy Wagler and his team at Wagler Competition Products have become well-known for their diesel work, and specifically the shop’s enhancements for Duramax engines. Well, Jeremy and his team have taken another step forward by introducing an all-billet Duramax geared for drag-and-drive competition. We caught up with Jeremy at PRI 2023 to get the full

Hot Shot’s Secret Stiction Eliminator

Hot Shot’s Secret Stiction Eliminator is engineered to remove stiction, the sludge and varnish created from burnt oil, while also lubricating.

AMSOIL Signature Series 0W-16 100% Synthetic Motor Oil 

AMSOIL Signature Series 0W-16 100% Synthetic Motor Oil provides next-level engine protection primarily for those with Toyota and Honda applications calling for a 0W-16 viscosity.