Stock Bottom End, Stock Allison—895 HP & 1,500+ LB-FT!

Justin Buchanan’s Silverado may be going where no stock Duramax/Allison combo has ever gone before. At the Scheid Diesel Extravaganza, his classic body Bow Tie made 895 hp and 1,513 lb-ft of torque on Blessed Performance’s chassis dyno—and it did it on a completely untouched Allison 1000 and a factory sealed LBZ engine. The goal behind Justin’s build: keep throwing horsepower at the truck until something fails. His parts recipe consists of a 63mm Fleece Cheetah VNT in the valley and an S488 atmosphere turbo, a 10mm CP3 and 100-percent over injectors from S&S, a 220-gph AirDog system, and PPE exhaust manifolds and up-pipes. Justin credits IRC Diesel‘s Carey Clark for sound advice and a helping hand along the way. The job of keeping the Duramax in one piece is left in the hands of MTKB Racing’s Mark Broviak, the EFI Live wizard who’s fine-tuned hundreds of high-powered, stock long block engines over the years—but even he can’t explain how the Allison is still alive.

At The Drag Strip

Making 7.3L’s Competitive (In 6.70 Index)

In an age where common-rail technology dominates the landscape in diesel drag racing, the 7.3L die hards at CNC Fabrication are determined to keep the HEUI-fired V-8 competitive. In the 6.70 Index class, they’re campaigning a 7.3L-swapped second-gen Dodge with veteran driver, Matt Ryce, behind the wheel. The “PowerRam,” as it’s known, was recently graced with 200-percent over nozzles (vs. 400-percent overs previously) and a staging limiter made possible via the brake switch in Power Hungry Performance’s Minotaur tuning software. At SDX, these changes provided for more consistent staging (no more pushing through the brakes) and the CNC team left Terre Haute fifth in ODSS points.

Making 7.3L’s Competitive (In 7.70 Index)

In 7.70 Index, CNC Fabrication’s Ethan Hurtt pilots “Paint Chip,” a standard cab F-350 Super Duty that has been living in the 7.7x’s all season. Not only are the guys at CNC Fab proving that the 7.3L Power Stroke can make roughly 700 hp reliably, but that it can go rounds and run the number repeatably. The truck sports a host of CNC’s own parts (injectors, 4-line feed fuel system, stage 2 HPOP, stage 2 valve springs, and rear four-link), but also gets help and support from Jelibuilt Performance, Power Hungry Performance, Hot Shot’s Secret, Goerend Transmission, Wyse Auto Repair, KC Turbos, Stainless Diesel, and Nitrous Express. Ethan currently sits Seventh Place in ODSS 7.70 Index points for the season.

In The Dirt

An Action-Packed Evening At The Hoosier State Showdown

Labor Day Weekend means the return of the annual Hoosier State Showdown—the small-town sled pull hosted by Fleece Performance Engineering. For the 17^th running of the event, a handful of Super Stock diesel trucks showed up to compete, including a pair of steeds from the Scheid Diesel camp (along with David Reed’s Scheid-powered “Wild Side”), O’Bryant Diesel’s new “Outa Time” common-rail, and WP Developments’ “O-Line,” which turned out its best performance to date. In the Limited Pro Stock diesel truck category, Corey Towles stole the show in Drew Slayback’s “Plain White Wrapper” Dodge, and Doug Monroe’s Freedom-powered third-gen coined “Backup Plan” put nearly 10 feet on Second Place in the Pro Street class. Stay tuned for a full event recap later in the week.

On The Engine Stand

Setting Valve Lash With Kill Devil Diesel

Running the valves on your engine doesn’t have to be a complicated process, just take it from the pros at Kill Devil Diesel. They employ the ICEO method (Intake Closing, Exhaust Opening) on every power plant they build, and it works every time. By turning the engine over until the exhaust valve(s) opens, the intake valve(s) can be appropriately adjusted. Then the opposite is performed, with the engine rotated until the intake valve(s) closes so you can adjust the exhaust valve(s). The ICEO method of setting valve lash can be used on any engine in the world, be it a 6.0L Power Stroke, 6.7L Ford, big-block Chevy, Cummins, Duramax, you name it. Enjoy KDD‘s walk-through of the ICEO method here.

Coming To Market

Ultra Premium DEF

Given the proposed changes in diesel exhaust fluid-related emissions laws, there is no telling how long DEF will be around. But until DEF is no longer a requirement, you can rest assured Hot Shot’s Secret will be offering the best product on the market. The lubrication specialists’ all-new, Ultra Premium DEF is made of high-grade synthetic urea, is triple-filtered (for utmost purity), and incorporates the company’s patent-pending Premium DEFender technology directly into the fluid, which not only stabilizes it but works to clean and prevent crystallization from occurring. Beyond that, Hot Shot’s new DEF fluid can even clear many DEF/SCR related diagnostic trouble codes, including the common P20EE, P20EF, P204F, P207F, P20E8, and P218F DTCs. Look for Ultra Premium DEF at an O’Reilly Auto Parts store near you.

Written by Mike McGlothlin