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2007 Chevy Silverado 2500HD - Attention To Detail

A 600hp, 12-second LBZ

Mike McGlothlin
Feb 28, 2014
Photographers: Mike McGlothlin
Dave Burton is one diesel enthusiast who’s done a lot with a little. His 79,000-mile ’07 Chevy 2500HD plants more than 600 hp to the pavement, runs low 12s in the quarter-mile, and gets it done with an LBZ Duramax that still sports a factory long-block and CP3. Add in the fact that it’s one of the cleanest street-driven, late-model Chevys we’ve seen, and you begin to see why it’s in the magazine this month.
As a finisher at a machine shop, Dave knows the meaning behind the words attention to detail. He’s the type of guy who polishes his toys regularly and lets his truck idle five minutes on a 90-degree day before it leaves the driveway. A sleek, clean look is just as important to him as adding horsepower, hence the paint-matched front bumper, door handles, and tailgate handle, as well as the smoked headlights, taillights, and third brake light.
Virtually every modification you can make to a Duramax—before digging into the engine—has been performed on Dave’s LBZ. He added an AirDog II fuel system, shimmed the fuel pressure relief valve, rerouted the positive crankcase ventilation (PCV) system, and installed an EGR delete tube. Replacing the factory turbocharger is a variable-geometry, 68mm Garrett 4094 from Danville Performance. An S&B air intake, Banks hot-side intercooler pipe with a PPE boot, and a High Flow Y-bridge from Huron Speed Products help free up airflow to the turbo and engine.
The most extensive engine work performed on Dave’s Silverado came when a set of Exergy Engineering 45-percent-over injectors replaced the stockers. Making every modification work in unison was left to Mark Broviak of Danville Performance, whose EFILive expertise allowed him to tie every modification together. Ample data-logging and dyno tuning ensured the factory CP3 could maintain rail pressure at wide-open throttle, and in the hottest setting on the DSP5 switch.
Photo 2/9   |   2007 Chevy Silverado 2500 Rear Three Quarter
Knowing the factory Allison 1000 wouldn’t be able to handle four-digit torque numbers, Dave made plans early on in his build to beef up the six-speed automatic. After some online research, he lined everything up with a reputable transmission builder and had a GMax-6 rebuild kit from Sun Coast and a Precision Industries torque converter on the way. Two years later, and after dozens of dragstrip passes, the built Allison hasn’t skipped a beat.
Even though subjecting stock LBZ pistons to 600 hp or more for extended periods of time is often akin to playing with fire, Dave told us it’s not something he dwells on. “I worry about it, but when I’m at the track I don’t,” he told us. “That’s part of the reason I haven’t upgraded the CP3. The way I look at it, it’s a great limiter to have.” Between working closely with tuner Mark Broviak at Danville Performance and blasting down the dragstrip at least 30 times a year, we’d say Dave’s truck has the perfect balance of power and reliability. And, it’s certainly not lacking in the looks department, either.
Dave Burton has done just about everything you can do to an LBZ Duramax without getting into the engine. The fuel pressure relief valve has been shimmed, the PCV system rerouted, the EGR system deleted, and a lift pump has been added. The only time Dave has ventured past the valve covers was when a set of 45-percent-over Exergy Engineering injectors was installed. Thanks to Danville Performance’s custom EFILive tuning, the stock CP3 maintains consistent rail pressure.
Photo 3/9   |   Going beyond simply adding 20-inch BMFs and 305/50R20 Nitto 420S tires, Dave installed slotted rotors from Brake Performance and Russell Performance stainless brake lines. Both the calipers and rotors were powdercoated by LSN Custom Powdercoating.
A 68mm billet 4094VA turbo from Danville Performance replaced the factory Garrett unit. Aiding exhaust flow to the variable-geometry charger are HSP Diesel’s billet exhaust manifolds, 2-inch up-pipes, and a 3-inch downpipe that bolts to a 4-inch MBRP system. The engine’s factory head bolts are still holding strong thanks to the turbo’s relatively conservative 42 psi of boost.
Consider the IFS under Dave’s Silverado bulletproofed; it’s a big reason why he can nab 1.6-second 60-foot times at the dragstrip. Kryptonite tie rods and centerlink, a Cognito Motorsports pitman and idler arm support kit, and Cognito’s upper control arm system reinforce the front suspension and steering system.
Fast Facts
Year/Make/Model: 2007 Chevy Silverado 2500 HD
Owner: Dave Burton
Hometown: Columbia City, Indiana
Odometer: 79,000 miles
Engine: 6.6L LBZ Duramax V-8
Fuel: Exergy Engineering 45-percent-over injectors, AirDog II 165-gph fuel system
Air: Danville Performance 68mm billet Garrett 4094
Transmission: Allison 1000 with Sun Coast GMax-6, Precision Industries torque converter, BT DieselWorks lockup box
Horsepower: 616 hp
Torque: 1,086 lb-ft
Tires: 305/50R20 Nitto 420S
Wheels: 20x9 BMF Death Metal Rehab
Fun Fact: Dave hits the Muncie, Indiana, quarter-mile dragstrip every month during the summer, and his best pass to date is a 12.24 at 109 mph.