A FIRE-RED 5.9L THAT WENT FROM 400HP TO 1,100HP OVERNIGHT
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.
With Marty’s power goal expanding virtually every time he spoke with Dermody, both parties decided to pull out all the stops and build a 5.9L that could handle anything thrown at it. As a welding inspector by trade (specifically the welds made on armor plating used in the U.S. military), it came natural for Marty to want the engine reinforced as much as possible. Seeing machining time at RCD Performance and Wagler Competition Products, both the block and head were cut for fire-rings, the bores were torque-plate honed, and the head was extensively ported. The factory 5.9L crank is secured by way of an Industrial Injection gorilla girdle and ARP main studs, the rods are HD beam, forgedsteel units from Wagler, and the standard bore, Monotherm pistons came from Mahle.
Matching the hot street cam from Hamilton, the head was opened up considerably. CNC porting, oversize, hardened valve seats, threaded freeze plugs throughout, 103-lb valve springs, and Harland Sharp’s bronze bushed rockers all made the cut. The cast intake shelf was taken out of the equation in the mill, making way for a Big Hoss manifold from Banks. ARP Custom Age 625+ head studs keep the head glued to the block. With half-and-half protrusion for the fire-rings (50-percent in the block, 50-percent in the head), head gasket issues will be a non-issue even if triple-digit boost is regularly seen.
S466 OVER S480 Being that the fire-ringed and well-fortified 5.9L would be a great candidate for handling big boost, Marty had no reservations about running a compound turbo arrangement. Built by HSP Diesel, it’s based around the use of two S400’s, both of which conceal proprietary billet compressor wheels spec’d out by Dermody. An S480 with a 96mm turbine wheel and a 1.32 A/R T6 exhaust housing serves as the atmosphere turbo, while an S466 equipped with an 87mm turbine and .91 A/R exhaust housing hangs off a BD Diesel manifold. The twice-compressed intake air travels through a Mishimoto intercooler before being forced through the Big Hoss manifold, and ultimately into the head.
Substantial fuel was brought to the table by pairing a set of S&S Diesel Motorsport 200-percent over injectors with one of the company’s 14mm CP3’s. The stroker pump has no problem supplying the sizeable, late 5.9L injectors with 26,000-psi of rail and a 200-gph AirDog II-4G system has no issue maintaining adequate low-pressure fuel supply from the tank. With a tank-to-engine fueling combination this serious, topping the 1,000-rwhp mark shouldn’t be a problem for Marty’s Dodge.
Any time you spot a golden Chrysler automatic under a Dodge, you know the owner turned to Firepunk Diesel for a transmission built to handle big power. Opting for the biggest and baddest 48RE on the market, Marty pulled the trigger on Firepunk’s Competition Stage 3 version. The race-ready four-speed makes use of a billet stator, quad disc DPC torque converter, a Fat Shaft billet input shaft, Maraging 300 intermediate shaft, and a Fat Shaft billet output. Added clutches, steels, and machined pressure plates, a high-pressure valve body, PPE deep pan, and a Mishimoto transmission cooler highlight the rest of the 48RE’s mods.
A WHOLE NEW ANIMAL
Believe it or not, Marty originally bought his third-gen so he could have four fully independent doors (his ’01 Quad Cab was chugging along just fine, but of course wasn’t a crew cab). However, after realizing the common-rail 5.9L platform could be made to make four-digit power while remaining durable, he decided to pursue the big horsepower build he’d always wanted. Now, he’s a long way from the days of old, when the Dodge was bone-stock aside from a Bullydog Power Pup. When Marty picks up his truck after returning home from overseas, it’ll most likely be packing 700 more ponies than it did when he left it in the care of Dermody Diesel. He says he can’t wait to drive it. We don’t blame him one bit.