2005 Chevy 2500 HD Duramax Twin Turbo - Dura Twin

High Horsepower-Low Profile

Trevor ReedNov 16, 2006
Chad Simper lives in Vernal, Utah, but shows up at dyno events and sled pulls all over the western half of the United States. His '05 Chevy 2500HD looks pretty normal until the hood lifts up. That's when people see bright-blue and polished steel tubes twisting around a unique dual-turbo setup that crams loads of boost into the LLY Duramax engine. The Silverado is not a one-trick pony raised to destroy dynos...it's also a tow rig, sled puller, drag racer, and daily driver.
Chad drove all the way from Utah to Southern California to be an alternate during our first Diesel Power Challenge West. His points were recorded, but since all the original competitors showed up, his scores were not tallied in the final results. That didn't deter him from going all out in every event and proving his engine setup is strong and reliable. We witnessed another display of diesel devotion and good sportsmanship when Chad showed up in Idaho towing a competitor to the '06 Dog Days of Summer. Using a 31/44-ton truck to pull a flatbed loaded with another 31/44-ton truck for hundreds of miles for a few minutes of time on a dyno? That's what we like to see!
This project build actually started back in 2002 when Chad bought a Chevy to try out the new Duramax engine everyone was talking about. About the same time, he found a new Web site devoted to GM trucks called www.dieselplace.com. He eventually became co-owner of the site with founder Nick D'Amico as he continued to build up his '02 Silverado. Eventually, he upgraded to the '05 Chevy seen here, and he has lots of people to thank for the help: his parents Kim and Gary Simper; Mike L. at Inglewood Transmissions; Steve Cole at TTS Power Systems; Nathan Wright, the man behind the twin-turbo setup; D'Amico and all the staff and members of the Diesel Place; Kelly Harris; Bob and Brandon for tuning; Tanya Bullock; and the rest of his family, Travis, Johnny, Jeremy, and Scott.
Chad is now having a race engine built by TTS Power Systems and Comptech that will combine LLY and LBZ engine parts. He doesn't want to make predictions about power output, but he'll reveal one thing: the truck will run on nothing but good ol' #2 Diesel.

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