Tuning, turbo, and injection system technology has come a long way for the 7.3L Power Stroke in recent years. The amount of horsepower that can be gleaned from&nbsp;Navistar&rsquo;s dinosaur V8 is constantly on the rise, and at the present time it&rsquo;s not uncommon for a 7.3L-powered Ford to be making 600 to 650 hp at the wheels. However, pushing the 7.3L platform to new heights has had its downside: a lot of dead&nbsp;E4OD&nbsp;and&nbsp;4R100&nbsp;transmissions. In many cases, the parts used in the built transmissions of yesteryear no longer&nbsp;suffice in today&rsquo;s&nbsp;high&nbsp;power&nbsp;environments. The&nbsp;sub-500hp&nbsp;7.3L days are over.<p>After testing various parts combinations on his 7.3L over the years and perpetually ramping up power along the way, the built&nbsp;4R100&nbsp;in Jake Enos&rsquo;s &rsquo;02 F-350 was on the verge of calling it quits. As the owner of Irate Diesel Performance&mdash;a company that specializes in all areas of 7.3L performance&mdash;Enos regularly uses the truck to showcase just how fast a 7,900-pound 7.3L Super Duty can be (12.40s on fuel, 11.70s on spray). He not only wanted the truck back on the racing circuit as soon as possible, but he needed a transmission that could hold up to the rigors of competition and the stress of 800-plus horsepower.</p><p>For the ultimate race-ready&nbsp;4R100, the truck was dropped off at Dorsey Diesel in Park Hills, Missouri, for one of that company&rsquo;s Stage 4 builds. Once the four-speed had been torn down, cleaned up, and its case re-surfaced, it was fitted&nbsp;with a host of billet and&nbsp;precision&nbsp;machined&nbsp;hard parts, upgraded clutches, steels, a high-flow pump,&nbsp;modified valve body, and a few trade secrets. A Precision Industries triple-disc converter and&nbsp;Mishimoto&nbsp;37-row transmission cooler would round out the long list of improvements.</p>

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Diesel World

SEEING 2020

WHY THE CP4.2 FAILS

FLASHBACK! SEMA 2018

LOOKS, SOUNDS, AND RUNS LIKE A DEERE

LITTLE ORANGE

THE GAME CHANGER

DINOSAURS AREN'T EXTINCT

FAMILY FARM TRUCK

BLACK HOLE CUMMINS

KNOW YOUR 6.0L

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