BLACK MAGIC

Diesel World - - Feature 2011 Chevy Silverado 2500hd -

Trans­mis­sion Work

The trans­mis­sion also re­ceived ap­pro­pri­ate mod­i­fi­ca­tions in line with the en­gine up­grades and was built by, you guessed it, Wehrli Cus­tom. The Al­li­son was equipped with both bil­let in­put and out­put shafts, a bil­let hub and plan­e­tary gear and Raybestos clutches. A Sun­coast con­verter is the fi­nal piece which helps put the power to the ground.

With some fi­nal en­gine and TCM tun­ing by Mo­tor OPS, the truck was sent to the dyno and then put on the road. With nearly 60,000 miles to date on his ride, you might think that Dil­lon is happy with the cur­rent state of things—but no. “I’m very happy with my truck, but there’s still a lit­tle left to do,” he claims. “It’s go­ing back to Wehrli this win­ter for driv­e­line up­grades and a lit­tle more un­der the hood.” As he con­tem­plates even more for his truck, his last line puts it all in per­spec­tive: “They say it will never end, and I’m okay with that.”

THEY SAY IT WILL NEVER END, AND I’M OKAY WITH THAT.

 The larger of the two tur­bos in the com­pound setup was supplied by En­gi­neered Diesel and mea­sures 84mm in in­ducer size. The S400 frame charger breathes through an afe air fil­ter and com­bined with the small turbo pro­duces a mas­sive amount of boost. ...

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