Building A Monster

A FIRE-RED 5.9L THAT WENT FROM 400HP to 1,100 HP OVERNIGHT

- MIKE MCGLOTHLIN

When your plan to build an 800hp daily driver balloons into an all-out engine build, compound turbos and enough fuel for 1,100-rwhp, you end up with a third-gen menace on wheels like the one Marty Selvidge owns. Long a fan of Cummins-powered Dodges, Marty decided he wanted to amplify the power of his ’07 Quad Cab a couple years ago.

After teaming up with Dermody Diesel Performance, a shop that’s known for building highly competitive pulling trucks, Marty’s Dodge was soon transformed from mild to wild. As the outline for the build evolved, Marty didn’t have a hard time convincing the folks at Dermody why he needed more power than he originally thought. After all, everyone knows you can never have enough.

Don’t be fooled by what you see here, this turbo’s got a friend. Mounted above an S466, the S480 shown employs a billet compressor and a 96mm turbine wheel in a T6 flanged, 1.32 A/R exhaust housing. The compound system was sourced from HSP Diesel, while the turbos were spec’d out by Dermody Diesel Performance. At full song, the S400’s join forces to make more than 80 psi of boost.

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