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Our favorite mid-engine Corvette theories and rumors

The mid-engine Corvette! We just saw blurry photos through the foliage, and are hearts are all aflutter because it means that this car is real. And it's the most " never before" Corvette since 1984. Which leads us to all kinds of wacky theories and speculation. Everybody knows something or heard from a guy. None of those guys (or gals) from GM are talking to Autoblog, to be clear. But that won't stop us from stirring the pot. Let's go over a few point-by-point. The pushrod engine will be replaced by an overhead-cam V8 Car and Driver has repeatedly reported that an overhead-cam engine will come after the mid-engine Corvette's debut with an old-school pushrod. We've heard the same thing firsthand, albeit from a source with no connection to the development of the Corvette or powertrain. "At some point two valves can't pass future emissions regulations," said the guy we know. While the pushrod engine is compact, the design makes it difficult - if not impossible - for sophisticated variable valve timing (and lift) systems that control combustion with more precision. Hasty conclusion: The pushrod engine has a finite life in front of it. This one's a lock, it's a just a matter of when. Bowling Green's new paint shop is really the mid-engine assembly line Credit to Reddit for this one. Like we said, everybody knows a guy. But let's look deeper. The new paint facility costs $439 million dollars and adds 450,000 square feet, almost half the size of the existing plant. Plus GM announced another $290 million in upgrades at Bowling Green Assembly. That sure sounds like a lot of money, but you can actually spend that much on a paint booth. Porsche spent 500 million Euros (about $561 million dollars) to add the Macan assembly to its Leipzig, Germany plant in 2014. Chrysler shelled out $850 million for a paint shop in Sterling Heights, Michigan. GM spent $600 million for a new paint shop at the Fairfax (Kansas City) plant. Honda, on the other hand, is working on a thrifty $210 million project in Marysville, Ohio that includes a 300,000 square foot expansion, and the low-volume Acura NSX facility only cost $70 million. Hasty conclusion: The square footage and cost could easily mean a new assembly line instead of (or in addition to) a paint line. And if the NSX plant was really that cheap, GM could have hidden a similar sum in its existing announcements.

'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).

Bring back the Bronco! Trademarks we hope are actually (someday) future car names

Trademark filings are the tea leaves of the auto industry. Read them carefully – and interpret them correctly – and you might be previewing an automaker's future product plans. Yes, they're routinely filed to maintain the rights to an iconic name. And sometimes they're only for toys and clothing. But not always. Sometimes, the truth is right in front of us. The trademark is required because a company actually wants to use the name on a new car. With that in mind, here's a list of intriguing trademark filings we want to see go from paperwork to production reality. Trademark: Bronco Company: Ford Previous Use: The Bronco was a long-running SUV that lived from 1966-1996. It's one of America's original SUVs and was responsible for the increased popularity of the segment. Still, it's best known as O.J. Simpson's would-be getaway car. We think: The Bronco was an icon. Everyone seems to want a Wrangler-fighter – Ford used to have a good one. Enough time has passed that the O.J. police chase isn't the immediate image conjured by the Bronco anymore. Even if we're doing a wish list in no particular order, the Bronco still finds its way to the top. For now (unfortunately), it's just federal paperwork. Rumors on this one can get especially heated. The official word from a Ford spokesman is: "Companies renew trademark filings to maintain ownership and control of the mark, even if it is not currently used. Ford values the iconic Bronco name and history." Trademarks: Aviator, AV8R Company: Ford Previous Use: The Aviator was one of the shortest-run Lincolns ever, lasting for the 2003-2005 model years. It never found the sales success of the Ford Explorer, with which it shared a platform. We Think: The Aviator name no longer fits with Lincoln's naming nomenclature. Too bad, it's better than any other name Lincoln currently uses, save for its former big brother, the Navigator. Perhaps we're barking up the wrong tree, though. Ford has made several customized, aviation themed-Mustangs in the past, including one called the Mustang AV8R in 2008, which had cues from the US Air Force's F-22 Raptor fighter jet. It sold for $500,000 at auction, and the glass roof – which is reminiscent of a fighter jet cockpit – helped Ford popularize the feature. Trademark: EcoBeast Company: Ford Previous Use: None by major carmakers.