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2008 Ford F-250 - Double Duty

This F-250 Is Part Farmhand, Part Hot Rod

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Tired of seeing high-powered trucks that can do it all? Neither are we. And that’s exactly what we found in Kurt Aufdenkamp’s ’08 F-250. The Chapin, Illinois, resident’s Super Duty pulls double duty on a regular basis: towing equipment around the family farm, and serving as his daily-driven hot rod.

It all started four years ago, when Kurt was in the market to unload his 7.3L Power Stroke for a newer truck. “I wanted to stay in a Ford but didn’t want the HEUI system,” he told us. “When I found out the 6.4L was a common-rail, I knew it’d be better than the 6.0L.” The truck’s first major modifications included 60hp nozzles and Industrial Injection’s Dragon Fire high-pressure fuel pump. Both of those changes began pushing the stock 5R110 automatic over the edge.

Most recently, Kurt had the Power Stroke experts at Flynn’s Shop in Alexander, Illinois, turn his Ford into a real fire breather. The 60hp nozzles were replaced with 110hp units from Elite Diesel, and the modified high-pressure fuel pump was ditched in favor of a dual pump setup (also from Elite). Increasing flow from the injection pumps to the injectors are Elite’s ported fuel rails, and one of its Stage 2 low-pressure fuel systems gets diesel from the tank to both injection pumps in a reliable fashion.

Sitting in place of the factory sequential turbochargers is Elite Diesel’s High Power compound setup. The combination includes a modified factory high-pressure unit fitted with a 62mm compressor wheel and a 76mm, low-pressure, ball-bearing charger from Precision Turbo and Engine. An up-pipe-mounted wastegate routes excess drive pressure from the high-pressure turbo into the low-pressure unit in order to keep the smaller charger from overspeeding. Compressed intake air gets cooled off thanks to a massive, Spearco intercooler, and exhaust gases make their escape through a 4-inch downpipe and exhaust system, which culminates in a 7-inch tip.

“Despite having 6 inches of lift, 36-inch-tall tires, and an 8,700-pound curb weight, the truck is extremely light on its feet.”

With the 6.4L Power Stroke not lacking any bottom end strength, only the top end was modified to handle the extra fuel and boost. To avoid valve float, a set of Elite Diesel’s valvesprings, providing a much higher seat pressure, were employed. Adding chromoly pushrods ruled out another weak link in the 6.4L’s stock valvetrain. Keeping the heads clamped to the block is a set of H-11 head studs.

After experiencing a couple transmission failures behind the potent 6.4L in the past, Kurt settled on a Stage 5 TorqShift from Elite Diesel. The top-of-the-line slushbox is stuffed with extra clutches, billet input and intermediate shafts, a billet overdrive planetary, and a billet reverse hub. A Sun Coast Heavy-Duty torque converter sends power through the built automatic. Spot-on engine and transmission tuning, courtesy of Gearhead Automotive Performance, keeps the truck powerful yet reliable.

Despite having 6 inches of lift, 36-inch-tall tires, and an 8,700-pound curb weight, the truck is extremely light on its feet. Thanks to the larger injector nozzles and moderately sized turbos, spoolup is instant, and there’s enough top end power to click off a low 12-second quarter-mile. Thanks to the overbuilt powertrain, Kurt can also work the truck like it’s stock. Whether it’s hooked to a trailer or blowing the doors off anything and everything on the street, this 800hp Ford can handle any job.

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