Boosted Denali: Supercharged And Ready For Dyno Time
The 2016 single-cab boosted Denali giveaway truck is getting closer to its final form, and this episode from Boost District focused on the biggest step yet: installing a Magnuson 2650 supercharger. The team wasted no time tearing into the bay, pulling fans, hoses, and the belt drive apart to make room for the new setup.
One of the early highlights came from Trent’s wiring cleanup. The factory harness had already been patched together, and it wasn’t something anyone wanted to trust with boosted power. Instead of trying to make do, he built it right. Every connection was rewrapped and rerouted until the engine bay looked cleaner than what GM delivered from the factory. It’s the kind of detail that doesn’t add horsepower, but it does add peace of mind and a professional finish.
Solving The Fuel System ProblemNot everything went smoothly, though. The Denali was listed as having LT4 injectors, but once the blower install got underway, the team decided to pull them and double-check. It turned out they were LT1 injectors, which would never keep up with the airflow demands of a 2650. That discovery could have meant a big delay, but Boost District stocks LT4 injectors and matching harnesses in-house.
The fix went beyond just swapping parts. The original injector harness was a mess of butt connectors and worn wires. Instead of patching it, the crew dropped in a brand-new LT4 harness, which tied everything together neatly and made the bay more reliable. On the plus side, the high-pressure pump was indeed an LT4 unit, so half the fuel system was already correct. With new injectors, fresh wiring, and a pump ready to support the extra fuel flow, the Denali’s fueling was officially sorted.
Pulley Choices And Power GoalsWith the blower bolted in, attention turned to the pulley setup. The Magnuson comes with a 105mm pulley that would keep boost down around 3–4 pounds. That would work, but it wouldn’t take advantage of the truck’s cam and lower compression ratio. Instead, the smaller 90mm pulley was chosen, which should raise the boost into the 7–8 pound range. The setup was finished off with an HD tensioner and revised belt routing to make sure the drive system stays solid.
Even with that pulley, the team left room for future adjustments. Boost District stocks plenty of different pulley sizes, so dialing in more boost later will be simple. For now, the 90mm is a smart starting point that balances power and reliability.
Wrapping It UpBy the end of the session, the boosted Denali was running with its new 2650 in place. The radiator hoses were trimmed and fitted, the sensors wired up, and the cooling system plumbed with a new heat exchanger. The first startup proved everything was working as it should.
The next chapter will bring dyno time and plenty of blower whine, but even now, the truck is taking shape as a serious street machine. With the wiring cleaned up, the fuel system corrected, and a supercharger bolted in, this boosted Denali giveaway build is officially past the halfway point.
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Under Pressure: Crankcase Control With Moroso Catch Cans
Under Pressure: Crankcase Control With Moroso Catch Cans
Oil catch cans may look simple, but they can play a big role in protecting the health and performance of your engine. This is especially true in racing or if you’re running a modern direct-injected setup. By trapping oil mist and other contaminants before they reach the intake, a catch can helps prevent the carbon buildup that can rob horsepower and efficiency over time. The new Moroso Catch Cans offer maximum efficiency and control in crankcase ventilation.
Why Catch Cans MatterEvery internal combustion engine generates blow-by, where pressure sneaks past the piston rings and builds inside the crankcase. To relieve this pressure, manufacturers run a hose from the crankcase, often from the valve cover or valley cover, to the intake manifold. The downside is that this hose doesn’t just carry air; it also carries oil vapor and other byproducts from the combustion process. Left unchecked, these contaminants coat the intake manifold and valves, reducing airflow, hurting combustion efficiency, and even causing misfires in severe cases.
The Direct Injection ProblemThis problem is amplified in direct-injected engines. In older carbureted or port-injected designs, the fuel passes over the intake valves and effectively washes away oil deposits. But direct injection sprays fuel directly into the combustion chamber, so there’s nothing to keep buildup from forming. A catch can, plumbed into the breather hose, acts as a filter that traps the unwanted crud before it can reach the intake.
These diagrams, courtesy of Radium Engineering, show us how the OEM PCV system typically works as well as the open and closed systems when using a catch can.
Performance BenefitsBeyond daily driving, catch cans also shine in high-performance street and racing applications. When paired with an external vacuum pump, like Moroso’s system, a catch can keeps the oil mist collected instead of venting it into the atmosphere or onto the track. The vacuum pump itself reduces crankcase pressure, lowers parasitic drag, and improves ring seal—all of which translate to more horsepower. By placing a catch can on the outlet side, you capture the contaminants while maximizing the performance benefits.
Moroso’s Billet Catch Can DesignMoroso has unveiled its latest Billet Oil Catch Cans, engineered for racers and performance enthusiasts looking for maximum efficiency and control in crankcase ventilation. Featuring an internal baffled design, these catch cans effectively separate and trap oil mist, keeping it contained in the tank and preventing filter saturation, ensuring cleaner operation and longer service intervals.
Constructed with billet-machined tops and bottoms, the Moroso catch cans are finished in a sleek black anodizing for both durability and a premium appearance. Each catch can comes complete with a matching billet mounting bracket that allows the unit to be clocked for optimal fitment, making installation straightforward in a wide range of applications. Designed for versatility, the catch cans can be plumbed to valve covers, Moroso Vacuum Pumps, Moroso Dry Sump Tanks, and more.
Engineered for Easy Installation and ServicePractical features include a replaceable breather element, serviceable -AN O-ring fittings, and a petcock drain for quick and easy maintenance. Measuring 3.00 inches in diameter, with a 5.8-inch tank height and 8.8-inch overall height, these compact units offer a balance of performance and packaging flexibility. With Moroso’s reputation for quality and innovation, these new Moroso catch cans provide a reliable solution for street and race builds alike.
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