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'Killing a Duramax' Gale Banks YouTube series methodically tunes a diesel to death

Learning or perfecting a skill by watching YouTube videos is known as attending YouTube University. GM Authority picked up on one of the video site's more fascinating courses, hosted by Gale Banks; in a fair world, he should be referred to as Professor Banks when it comes to diesel engines and truck tuning. A few months after GM introduced the updated L5P 6.6-liter Duramax diesel V8 in the 2020 Chevrolet Silverado HD and GMC Sierra HD that ships with 454 horsepower and 910 pound-feet of torque, Banks decided he wanted to methodically tune the engine to death. The purpose of the resulting series, called "Killing a Duramax," is to push more power out of the engine in order to discover which parts break and when — or, as Banks puts it, force-feed the Duramax "until the crank hits the street and the heads hit the hood." With that knowledge, Banks can figure out all the weak points on his way to building what he calls a "Superturbo," that being a supercharged, twin-turbo race engine with more than 1,000 hp. What makes the series fascinating is Banks' knowledge, paired with the company's comprehensive iDash engine monitoring system that keeps tabs on a glut of parameters every step of the way. So for instance, you get Banks explaining the differences between inches of mercury and barometric pressure, how those are different from the water content of the air measured in grains, then showing those readouts on the iDash, then explaining in detail how they affect the air density in the Duramax system. The stock Borg-Warner variable turbo gets a lot of airtime — Banks accuses it of being "out to lunch" because he feels it's the weakest link on the engine. That turns into a turbo teardown and a deep explanation of performance pitfalls, such as when air pressure on the turbine begins to diverge from the boost pressure coming from the compressor. Banks says he can keep close tabs on where power's coming from, because the iDash monitors the horsepower contribution provided by the ambient air, the turbo, and the intercooler separately. The major changes so far are a stouter Precision 7675 turbo and TurboSmart wastegate (episode 5), a twin intake (episode 6), a custom liquid-cooled intercooler from a marine engine, a new GM oil cooler and synthetic oil (episode 10), and new injectors (episode 11).

2015 Chevy Spark will have lighter, smaller battery

As General Motors gets ready to release the 2015 Chevy Spark EV, it is retooling the Brownstown Battery Assembly to build a new battery system for the chirpy little electric car. The new Spark will lose a few pounds and kWh from its lithium-ion pack, but it will keep all of it's performance specs. The current Spark EV uses a 21-kWh lithium-ion battery pack with bits made by A123 Systems (known as B456 Systems during bankruptcy). For the 2015 model, GM is going to build a 19-kWh battery system in-house that will use 192 LG Chem cells. Losing a bit of energy capacity means that the battery system for the 2015 Spark EV will be 86 pounds lighter but it will keep the EPA-rated 82-mile range and 119 MPGe. The 2015 Spark EV also keeps its $26,685 (plus destination) starting price from the 2014 model. The car will once again qualify for a federal tax credit of up to $7,500. LG Chem also supplies the cells for GM's other plug-in vehicles from its facility in Western Michigan. The Brownstown production line currently builds the battery packs for the Chevy Volt, the Opel Ampera and the Cadillac ELR. You can read our first drive of the 2014 Chevy Spark here. Brownstown Battery Assembly Expands Capabilities Will build battery system for 2015 Chevrolet Spark EV 2014-05-14 DETROIT – General Motors will bring all its electric vehicle battery building capabilities in-house with production of battery systems for the 2015 Chevrolet Spark EV at its battery assembly plant in Brownstown, Mich. "Using our in-house engineering and manufacturing expertise enabled us to deliver a battery system that is more efficient and lighter than the 2014 Spark EV without sacrificing range," said Larry Nitz, executive director of GM global transmission and electrification engineering. "Our successful working relationship with LG Chem has allowed us to deliver a new battery system for the Spark EV that helps us to better leverage our economies of scale." A newly designed battery system features an overall storage capacity of 19 kWh and uses 192 lithium ion cells. The cells are produced at LG Chem's plant in Holland, Mich. The battery system weight of 474 lbs. is 86 pounds lighter than the system in the 2014 Spark EV. The Spark EV battery is built on a dedicated production line at Brownstown, which also manufactures complete battery packs for the Chevrolet Volt, Opel Ampera and Cadillac ELR.

2016 Chevrolet Camaro starts at $26,695

Parking the new 2016 Chevrolet Camaro in your driveway will cost $26,695, including the $995 destination charge. That's a cut from $27,000 for the same trim on a 2015 Camaro. If you prefer a V8 under the hood, then the base 1SS goes for $37,295, compared to $34,500 for that model currently. The 2016 Camaro is offered as a coupe and convertible in four trim levels: 1LT, 2LT, 1SS, and 2SS. The LT is available with a 2.0-liter turbocharged four-cylinder with 275 horsepower and 295 pound-feet of torque or a 3.6-liter V6 with 335 hp and 284 lb-ft. The SS gets a 6.2-liter V8 with 455 hp and 455 lb-ft. The first examples arrive before the end of the year, but droptops and the turbo engine don't materialize until the first quarter of 2016. Base models come with tech like Chevy's MyLink infotainment system with Apple CarPlay, a rearview camera, automatic climate control, and multiple driving modes. The RS Package adds to the style with 20-inch wheels, HID headlights, LED taillights, a different grille insert, and rear spoiler. Opting for the SS brings a more aggressive exterior look, plus performance upgrades like Brembo brakes, differential and transmission coolers, and a limited slip differential on those with a manual gearbox. Upgrading to the 2SS adds amenities like heated and ventilated front seats, wireless phone charging, a Bose stereo, rear cross-traffic alert, and Side Blind Zone Alert with Lane Change Alert. Options like a Magnetic Ride Control suspension and dual-mode exhaust offer additional sportiness. Reading about the 2016 Camaro is nice, but Chevy now has a visualizer for the pony car. It's not quite a full configurator but lets you check out different colors, wheels, and stripes to imagine your future purchase. Enjoy finding just the right combo. Related Video: CHEVY REVEALS PRICE, ONLINE VISUALIZER FOR 2016 CAMARO 21/08/15 Gen Six Camaro offers more performance, technology and customization choices DETROIT – As production of the lighter, more powerful, more advanced 2016 Camaro grows near, Chevrolet revealed more details to help customers tailor their Gen Six exactly how they want it, including pricing information and an online visualizer. The 2016 Camaro offers higher levels of performance, technology and refinement, starting at a suggested retail price of $26,695 for the Camaro 1LT, while the most powerful Camaro SS ever starts at $37,295 for the 1SS.