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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).

IIHS Crash-tests Expose American Muscle Cars' Weaknesses | Autoblog Minute

Turns out American muscle cars aren?t that strong according to IIHS crash tests. The Insurance Institute for Highway Safety put three iconic American sports cars through a range of performance crash tests. Chevrolet Dodge Ford Autoblog Minute Videos Original Video crash test camaro challenger

Ranking full-size pickup trucks by the size of their discounts

Each and every month, full-size pickup trucks dominate the new-car sales reports in America. It's been that way for years — the Ford F-Series has been America's best-selling vehicle for 38 consecutive years — and it's not going to change any time soon. With that in mind, we've compiled this list of discounts on brand-new full-size pickup trucks using data provided by Truecar, including their average retail prices, average transaction prices and discounts in dollars and percentage off list price. We've also created a visualization of the best deals Americans are scoring on the three best-selling models in America. If you're looking for the absolute biggest discount you can find on a new truck, look no further than your nearest Ram dealership, then scour the lot for a leftover 2019 1500 model. Buyers are averaging nearly 13% off the cost of the 2019 Ram, paying an average transaction cost of $41,667. That's $6,071 off the average retail price, which equals the best truck deal in October. The 2020 edition isn't discounted nearly as far, averaging $2,852 off for an average transaction price of $48,904. The next best deal is on the 2019 Ford F-150; its average transaction price of $43,064 equals $3,843 off its sticker price. The 2020 F-150's $2,810 discount means buyers are paying around $47,300. They should know, though, that a brand-new model is coming for 2021, so we'd expect bigger discounts on remaining 2020 inventory in the coming months. Moving to General Motors, the best deal you'll find is on leftover 2019 Chevy Silverado 1500s, which are selling for an average of $47,043. That's $2,852 off the sticker price. Interestingly, 2020 Silverados are seeing slightly lower transaction prices at $46,009, but with a smaller average discount of $1,693. The 2020 GMC Sierra is mechanically similar to the Chevy, but aimed at buyers who want a bit more luxury. That's reflected in the 2020 Sierra 1500's average transaction price of $54,491, which is $2,131 off its sticker. If pickup trucks aren't your thing, take a look at this list of the best new car deals in America based on the percentage discount off their suggested asking prices here. And when you're ready to buy, click here for the Autoblog Smart Buy program, which brings you a hassle-free buying experience with over 9,000 Certified Dealers nationwide.