2008 Chevrolet Lt W/1lt on 2040-cars

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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).

Hurst Edition Trans Am proves the Screaming Chicken will rise from the ashes

It seems the Pontiac Trans Am steadfastly refuses to die. Ever since Chevrolet was granted a retrofied Camaro to compete with the Ford Mustang, Pontiac lovers have lamented the loss of this 1970s icon. And, looking at the Hurst Edition from Trans Am Depot, shown here at the 2012 SEMA Show, may explain what all the fuss is about.
It's not going to appeal to everyone's muscle-car tastes, but there's certainly room for a brash-and-bold black-and-gold Special Edition in many a Trans Am lover's garage. After all, if you want the keys to a custom pony car, you'll certainly get noticed in this one. If this scheme isn't your bag,, you can alternatively order your Hurst Edition in white and gold or silver and black. Oh, and don't forget a color-coordinated Screaming Chicken on the hood.
No matter which way you choose to go, your inner Burt Reynolds will appreciate the Eibach suspension kit, forged wheels with Pirelli PZero tires, functional shaker hood, fender air extractors, rear spoiler and, of course, a Hurst shifter inside. The interior is emblazoned with all manner of special touches, including a Hurst dash plate and T/A stitching on the Katzkin two-tone leather seats.

2015 Chevrolet Silverado 1500 Custom Sport Quick Spin

Coincidentally, the week we had the 2015 Chevrolet Silverado 1500 Custom Sport a friend asked, "What would you buy if you could only have one vehicle for everything?" After a week's driving and trailer hauling, very close to first choice would be an American pickup. They're all so good now, you can't lose. And as we found in the Chevy you can go anywhere and haul anything, and you pay no penalty for capability until you try to find an open space on the street to park. Nicely equipped versions like the Custom Sport aren't cheap, but if you need a truck and you like the look of this one, it is really good. Driving Notes The cabin is big and inviting, and everything in it is big and inviting. The materials are nice enough to look and feel swanky but not so lavish that you're afraid to get them dirty. The seats are sized for adult male bears but they don't swallow you up. The sunroof is big enough to be an observatory. It's also quiet. The only time it gets mildly unruly is when you call for power and the engine has to downshift a few gears, otherwise you don't hear the exhaust unless you roll down the window. It looks like it was designed with a T-square. I quite like it, the body-colored bumpers toning things down, the 20-inch wheels doing a much better job of filling those ample arches than the standard 17-inchers. The truck is built for people who take their work and all their gadgets with them. The front console has three USB ports, two 12-volt cigarette lighter ports, and a three-prong 110-volt outlet. The giant cubby at the base of the console has an insert to hold a clipboard or a small tablet. The abyss under the center armrest has one more 12V cigarette lighter, two more USB ports, an SD card reader, and another specialized holder for something the size of a small tablet. There's a WiFi hotspot so the streaming never has to stop. The Chevrolet navigation was trouble-free as usual, and you can input destinations on a QWERTY touchscreen keyboard. Every nav system should be so solid. The Silverado has some of the best feature implementations we've encountered in any vehicle. The lane departure warning and park assist systems don't vibrate the steering wheel, they vibrate the seat. The left, right, and middle of the seat bottom will pulse as necessary, an intuitive, peripheral way to deliver a message that doesn't interrupt your primary focus. The rear-view camera is no longer offset, it's centered.