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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.

Here are 12 electric pickups in the works

With the unveiling of the GMC Hummer EV, the list of planned electric pickups is expanding. Legacy automakers like Ford and Chevy have theirs coming, as do startups like Tesla, Rivian and Bollinger, as well as some lesser known brands. Here are all the electric pickup trucks we know to be in the works, along with a few that are being discussed or mulled over. GMC Hummer EV The 2022 GMC HUMMER EV is a first-of-its kind supertruck develop View 40 Photos We’ve seen it now, and itÂ’s the business. The GMC Hummer EV comes out swinging with 1,000 horsepower from GMÂ’s new Ultium electric powertrain program, a wealth of off-road features, a removable roof, Super Cruise and the revival of the Hummer name. WeÂ’ll see the first ones on the road next fall. Tesla Cybertruck Tesla Cybertruck at the Petersen Museum View 14 Photos Tesla revealed the Cybertruck last year with, ahem, unique styling, a number of powertrain options and a claimed range of up to 500 miles. It has a compressed paper dash, a ramp for the bed, and “shatterproof” windows. It has already racked up hundreds of thousands of reservations. It will be built in Texas. Rivian R1T 2021 Rivian R1T View 15 Photos EV startup Rivian revealed its R1T electric pickup toward the end of 2018 with a claimed 0-60 time of 3 seconds and a towing capability of 11,000 pounds. Preproduction began in September 2020 at RivianÂ’s factory in Normal, Illinois. Bollinger Motors B2 Bollinger Motors B2 side outdoors View 31 Photos BollingerÂ’s B2 electric pickup is a Class 3 off-roader with retro styling, removable roof panels, and a unique “frunkgate” with a pass-through down the center of the vehicle. It was created with both enthusiasts and workers in mind, with features that can get it to remote places (portal axles, hydro-pneumatic suspension) and to get things done (room for 40 2x4s, equipped with eight 110-volt outlets and one 220-volt outlet). Bollinger also plans to make the B2 Chassis Cab available for fleet customization. Ford F-150 Electric Electric Ford F-150 Towing View 9 Photos WeÂ’ve known this to be in the works since early 2019. Since then, details have trickled out. Back in June, Ford announced its F-150 Electric would be coming within two years. WeÂ’ve seen it pull a million pounds worth of train and trucks, heard it will have more power than any other F-150, and seen its LED-laden front end.

GM raises 2023 guidance on strong sales, higher profits

General Motors beat first-quarter profit estimates and raised its full-year earnings and cash-flow guidance after vehicle demand at the start of the year surpassed expectations. Its shares rose in premarket trading. GM made $2.21 a share in adjusted profit in the first quarter, compared to a consensus forecast of $1.72 a share. Revenue rose 11% to $39.99 billion, it said Tuesday, which was more than the $39.24 billion analysts expected. The stronger results stem from rising sales in the US, even in the face of higher interest rates and inflation. GM executives said demand was strong enough to revise 2023 guidance upward, boosting profit estimates for the year by $500 million to between $11 billion and $13 billion. “We did it with strong production and inventory discipline and consistent pricing,” GM Chief Financial Officer Paul Jacobson said on a call with journalists. “All in all, weÂ’re feeling confident about 2023.” The Detroit automaker raised per-share full-year guidance to between $6.35 and $7.35, up from $6 to $7 a share, and said free cash flow would also increase by $500 million to a range of $5.5 billion to $7.5 billion.  GMÂ’s shares pared a gain of as much as 4.4% before the start of regular trading Tuesday, rising 3.5% to $35.50 as of 6:55 a.m. in New York. The stock was up 1.9% for the year as of the close on Monday.  North American Strength The automakerÂ’s sales were particularly strong in North America, where first-quarter earnings rose before interest and taxes rose to $3.6 billion. Vehicle sales rose 18% to 707,000 in the region. Jacobson said the company originally expected to sell 15 million vehicles in the US this year, slightly less than the 15.5 million annualized rate automakers foresaw in the first quarter. North American demand was enough to offset a weak performance in China, GMÂ’s second-largest market. The automaker continues to struggle in the country, where its vehicle sales fell 25% to 462,000 vehicles in the quarter. Profits from its joint ventures in the market slumped 65% to $83 million.  The market has struggled overall in the wake of Covid-19 restrictions and foreign automakers have had to overcome a growing preference for Chinese brands by competing on price, squeezing profit margins. The situation in China probably wonÂ’t significantly improve until the second half of the year, according to Jacobson. GM remains on target to sell 150,000 electric vehicles this year, the CFO said.