71mm), Small Twin (under 80mm), Large Twin (over 81mm) and Unlimited. With a cap set at 60 trucks, the sign-up sheet was full before noon, and the crews blasted through them quickly, allowing some extra time for the Unlimited class entries to make sure everything was just right before they spooled those triple turbos and armed the nitrous switches. Notables on the chassis dyno were Randy Reyes, a recent Ultimate Callout Challenge competitor who stole the show with a brutal 2,058hp run thanks to his triple turbos and a little nitrous. Starlite Diesel had its Duramax dually on the rollers and was just cresting 1,400 hp when the torque converter bolts sheared off mid-pull. Richard Scott’s 6.4L Power Stroke smashed
Running in the United Pullers Open Street class, Shannon Perkins took her first shot at sled pulling in this Cummins-powered Dodge she calls the Little Red Wagon. Unfortunately, things didn’t go quite as planned as some axle hop and bounce led her to lift a little soon, ending the pull at 97 feet. But huge props to her for getting out there and trying—you’ve got to learn somehow.
This clean and sleek lowered 6.4L Power Stroke is owned by Richard Scott of Roy, Utah, and laid down 713 hp. Scott has made a few improvements under the hood like custom Tyrant Diesel tuning, No Limit Fabrication intake, an HT Turbo 71mm Low Pressure turbo, BTS Transmission torque converter, and an H&S Motorsports wastegate kit.
As the dyno event sponsor, of course Starlite Diesel had to have its own display. Owner and lead tuner Zac Fuller has spent years tweaking, tuning and building on this truck and has competed in both Ultimate Callout Challenges. Broken converter bolts during his time on the dyno created some issues, but not before he smashed out more than 1,400 hp.
Oakley Bonds of Nephi, Utah, had this big blue Dodge on the rollers and slammed down 844 hp in the Small Twin class, which allows all compounds up to an 80mm turbocharger. That run was enough to land third spot in the class, very respectable numbers for daily-driven rig.
There is just something about a clean OBS Ford that gets a guy excited. This crew cab 7.3L Power Stroke is owned by Austin Thomas of Clinton, Utah, and made 477 hp on the Superflow Dyno. Great numbers from an old HEUI engine.