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1993 Dodge W250 - Twisted Metal

A 1,700hp, Single-Turbo First-Gen

Mike McGlothlin
Oct 4, 2013
Photographers: Mike McGlothlin
In the world of sled pulling, a lot of things go unchanged once truck owners establish a combination that gives them the best chance of winning. After a truck’s frame, suspension, and weight distribution seem optimized, a proven chassis almost always goes untouched. This is why the best-running trucks have typically been around for years, and why newcomers to the sport often buy used—yet proven—rolling chassis from other competitors. Now, take all of that, and throw it out the window! Even with a proven, ’96 Dodge Ram 2500 puller in the shed, Dalton Tarr and his father, Rod, decided to put together one of the only 3.0 Class first-gen Dodges in the country. “We wanted to build something different,” Dalton told us. “We didn’t want to do a late-’90s body style like everybody else, or a newer body due to the weight disadvantage.”
With a quick trip to Southern Kentucky, Dalton retrieved the slightly rusted, five-speed Club Cab Dodge W250 and drove it straight to Scheid Diesel’s Effingham, Illinois, location. While there, the truck underwent a complete transformation from streetable to a purpose-built puller. When all was said and done, a suspension-less Rockwell SQHD sat in place of the rear Dana 70, a stout Dana 60 resided up front, the cab and bed had been gutted, and the factory frame was vastly reinforced. The Getrag five-speed and NP205 transfer case were yanked in favor of a billet one-speed reverser and Quick Change transfer case from Profab Machine, and a four-disc Crower clutch is now used to transfer power from the engine to the transmission.
"“Dad and I weren’t ever too good at fishing, but we do pretty damn good truck pulling.” — Dalton Tarr"
As for the engine, Scheid built that, too. Starting with a core 5.9L previously used to power Rod’s pulling truck, Dalton’s engine bucks the current trend of boring, sleeving, and deckplating a 6.7L block. A stroker crank (which brings displacement to roughly 400 ci), billet-steel rods, 12:1 compression valve- relieved pistons, and a Scheid roller cam reside in the crankcase, while a competition 12-valve roller head sits up top. Fuel delivery begins with a geardriven, DSR lift pump, sending diesel to a massive 14mm P-pump. From there, triple-feed passageway injectors with large, five-hole nozzles feed each cylinder.
A 3.0-inch turbo from Haisley Machine, mounted to a Steed Speed exhaust manifold, routes compressed air through a water-to-air intercooler from Precision Turbo and Engine. After that, 65 to 70 psi of boost is forced through a Scheid 12-valve runner intake and into the heavily fueled Cummins. The engine’s efficient use of both air and fuel culminates in exhaust gas temperature that rarely exceeds 1,500 degrees when going down the track. According to the folks at Scheid Diesel, Dalton’s engine made in the neighborhood of 1,700 hp on the company’s engine dyno—an astonishing number when you consider that just three years ago top-tier 3.0 engines were making 1,250 to 1,300 hp. This is a testament to ever-advancing turbo and injection technology.
Photo 2/14   |   The straightforward, down-to-business nature of the interior reminds you that, while the old-school Dodge is one heck of a showpiece, it was built for one purpose: hooking to the sled. The stripped cab features only the essentials, such as a hand throttle, fuel and air shutoffs, and a fire extinguisher. One of Scheid Diesel’s Corsa data logger systems allows Dalton to review key parameters monitored throughout each pull—a necessity if you want to win night after night.
Despite being brand new to the pulling scene, Dalton’s truck has essentially dominated its local 3.0 Class from day one. In fact, as we went to press, it had only finished outside of First Place on a few occasions. “We knew this truck was gonna be an animal,” Dalton told us. “We wanted something competitive, and it’s definitely been that—and then some.” Look for this hard-charging first-gen to be a front-runner for years to come.
Fast Facts
Year/Make/Model: 1993 Dodge W250
Owner: Dalton Tarr
Hometown: Edinburg, Illinois
Engine: 5.9L-based Cummins I-6 12-valve
Transmission: Profab Machine reverser
Tires: 35x12.50R16 BFGoodrich All Terrain
Wheels: 16x10 RealWheels
Fuel: Scheid Diesel triple-feed 5x25 injectors, Scheid Diesel 14mm PES6P10501 injection pump, DSR mechanical lift pump
Air: Haisley Machine 3.0-inch-inducer turbo, Precision Turbo and Engine water-to-air intercooler
Estimated Horsepower: 1,700 hp
Target RPM: Carrying 4,800 rpm down the track
Fun Fact: Dalton sends a special thanks to Herrin Fertilizer, the primary sponsor of this one-of-a-kind first-gen.

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