1999 Camaro Z/28 Slp Ss on 2040-cars

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Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

Weekly Recap: Geneva's splendor reflects growing demand for ultra-luxury cars

Geneva is one of the most glittering auto shows in the world, but the list of high-powered and bespoke luxury cars was decadent this year even by the rich standards of the Swiss exhibition. It's great for enthusiasts to revel in the flame-throwing Aston Martin Vulcan, the racing-inspired elegance of the Bentley EXP 10 Speed 6 concept and the insane performance of the Lamborghini Aventador LP 750-4 Superveloce, but there's a reason for all of this opulence: the luxury market is big business. And it's growing. IHS Automotive forecasts that so-called ultra-premium sales will nearly triple this decade from 123,000 to 353,000 units around the world. The estimate includes brands like Aston Martin, Bentley, Ferrari and Rolls-Royce, but doesn't count BMW, Mercedes and Audi, which offer less expensive models in addition to their high-end flagships. Though IHS includes Porsche and its relatively large volume in the study, the ultra-premium segment is still set grow at about the same rate, even without the German automaker's figures. So what is propelling all of this growth in the most expensive segment of the auto industry? Put simply, there's more rich people. IHS Automotive principal analyst Tim Urquhart pointed to economic expansion in China, market recovery in the United States and a surge in the lucrative technology sector as contributing factors. This dovetails with a research report by UK-based Oxfam, an international relief organization, which found the world's richest one-percent owned 48 percent of global wealth in 2014, and it's expected to increase to more than 50 percent by 2016. View 17 Photos Carmakers are moving quickly to capitalize with new products, expanding their portfolios with low-volume speedsters like the 800-hp V12 Vulcan at Geneva, and plans to enter new segments, like Rolls-Royce's strategy to make an SUV. "Ultra-premium carmakers are looking to explore ways of growing their product offerings, and thus their bottom lines, in this most potentially profitable of segments," Urquhart wrote in a report on the Geneva show. In a nutshell, there are more choices for people with more money. It's a good time to have expensive taste. Other News & Notes 2016 Mazda MX-5 Miata production launches It won't be long now. The 2016 Mazda MX-5 Miata arrives later this year, and it's officially in production. Mazda announced this week that the roadster began rolling off the assembly line at its Ujina factory in Hiroshima, Japan.

Win an SUV 2022 | The best giveaways of the week

Autoblog may receive a share from purchases made via links on this page. Pricing and availability is subject to change. No donation or payment necessary to enter or win this sweepstakes. See official rules on Omaze. SUVs and crossovers are a hugely popular segment in the United States, making up nearly half of total vehicles sold last year. Here are our favorite SUV giveaways we’ve found online this week. Win a Himalaya Land Rover Defender 110 Crew Cab - Enter at Omaze The Land Rover Defender is an icon. An intense, luxurious off-roader that turns heads and can crawl up nearly anything. The problem? For the past 20+ years it hasn't been available in the United States. But this Defender is different. ItÂ’s vintage, restored by Himalaya, and itÂ’s powered by a Corvette engine. Plus Omaze is giving it away.  Here are the specs of the Defender in question, according to Omaze: Maximum Seating: 4 Engine: 6.2-liter Corvette LS3 crate engine Transmission: 6-speed automatic  Drivetrain: 4WD  Exterior Color: Satin Grey Interior Color: Jet Black Maximum Horsepower: 430 hp Maximum Torque: 425 lb-ft Approximate Retail Value: $210,000  Cash Alt: $157,500  Special Features: Black exterior roll bars and trim; Black 18” Sawtooth wheels with 35” tires; Wilwood™ brakes; 3" lift; Black diamond-stitched leather sport seats; MOMO Millenium steering wheel; front and rear matching consoles; Himalaya gauge cluster; Himalaya front and rear bumpers, bed-mounted tire carrier, and extended fender flares; Puma hood; LED lighting YouÂ’re probably asking yourself, what does it take to win? First of all, according to Omaze, "no donation or payment is necessary to enter or win this sweepstakes." $10 will get you 100 entries in this sweepstakes, while $50 will get you 1,000 entries and $100 will get you 2,000 entries. The best part? Each paid entry raises money for a worthy cause. See more about these causes at Omaze. Other Omaze sweepstakes: Win an Airstream Interstate 24X Win a 1958 Porsche 356 A - Enter at Omaze Win a Restored 1969 Pontiac GTO - Enter at Omaze Win a 2022 Porsche 911 GT3 - Enter at Omaze For these and more vehicle sweepstakes, check out Omaze.com. Enter quickly, they won't last forever. Bentley Chevrolet Ford Land Rover Commerce SUV