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Cummins Speed Demon - 2006 Dodge Ram 2500

A Diesel Wolf— In Wolf’s Clothing

Text By Jason Thompson, Photography by Nick Zalesky

Kenny Castro, the owner of this ’06 Dodge Ram 2500, got into diesels nine years ago because his gas-powered V-10 pickup wasn’t cutting it. His next truck was a diesel, but it was also a dualie—which was a little more heavy-duty than Kenny needed. His current ’06 Quad Cab, shortbed, single-rear-wheel truck, however, has proven to be just right.

He’s satisfied with the truck’s simple yet sharp looks, and the 5.9L Cummins powerplant does everything Kenny asks it to—and more. He told us about the time he was catching flack from his fireball sister and his mom for putting money into a big, heavy, smoky truck. After giving his family their first ride—they understood why Kenny wanted a hot rod diesel truck instead of a mundane sports car.

Anatomy of a Speed Demon
People in the diesel community know building a strong engine is only half the battle. Kenny also has a built ATS Diesel 48RE transmission with a billet-steel flexplate and Five Star torque converter, as well as billet-steel input, intermediate, and output shafts. A Mag-Hytec deep transmission pan keeps the fluid temperatures in check, while a custom valvebody controls the shifts. Frank Lane at Fastlane Racing Transmissions in Littleton, Colorado, did all the transmission work. The Cummins is tuned by Bully Dog and Smarty TNT R programmers. Kenny plans on switching to the 6.7L Cummins intake to get his big single to light faster.

By Jason Thompson
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