Younce knew the factory turbocharger would be a weak link, so it too would go by the wayside. Opting to run a T4 turbo mounting system from Irate Diesel Performance made it possible to utilize one of the industry’s latest gems: the S364.5 SX-E from Borgwarner. Offering a substantial increase in airflow over stock, the 64.5mm unit spools quickly, builds 35 psi of boost, and features a 360-degree thrust bearing for maximum durability. The S300 routes air through a 6.0L intercooler and a set of Irate’s 3-inch diameter intake plenums before entering the engine.
DURABLE E4OD
While the E4OD found under Younce’s F-350 isn’t the factory version, it was rebuilt using a Transgo shift kit and select other internal upgrades a short time ago. To date, the refreshed automatic has yet to skip a beat behind the now-potent 7.3L Power Stroke, which sends more than 400 hp and 800 lb-ft of torque its way.
OLD SCHOOL, MODERN STYLE
Ushering the OBS into the new age, Younce bolted a set of 20x12 Moto Metal wheels to the axles and cleared the headlights, tails, and cab lights—but he didn’t go overboard. After all, the truck still
Settling down harsh upshifts and stopping rear axle wrap is a set of traction bars Younce pieced together himself. The frame brackets, axle brackets, and heim joints came from Soflo Diesel, while Younce sourced the 2.5-inch-diameter DOM steel tubing...
Once exhaust leaves an Irate 3-inch downpipe, it routes through a 5-inch diameter Diamond Eye turn down system with a 10-inch polished tip. Both the factory 10.25 Sterling and Dana 60 axles still house the original 4.10 gears, but each differential...
While the truck still makes use of the factory pickup in the rear fuel tank, a sump kit from Full Force Diesel was installed in the front unit. Both factory tanks combine with an in-bed auxiliary tank to offer 91 gallons of overall capacity.
Tying all modifications together in the form of custom PCM tuning was left in the highly-capable hands of Gearhead Automotive Performance. Younce navigates half a dozen custom-tailored tunes via a TS Performance six-position chip.
While a Skyjacker leveling kit was bolted to the truck during our photo shoot (and for much of the truck’s life), Younce has since installed ’99 Super Duty leaf springs up front. In an effort to improve ride quality, a Precision Metal Fab reverse...