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GM reportedly developing 2.5-liter turbo four-cylinder

General Motors is allocating a massive amount of resources to developing electric technology, but it's not forgetting about the gasoline-powered cars that make up the bulk of its sales. It's reportedly designing a new 2.5-liter turbocharged four-cylinder engine based on its 2.7. Citing "sources familiar with the matter," enthusiast website GM Authority wrote that the 2.5-liter four is "in [the] final stages of development," meaning it should be announced sooner rather than later (assuming the report is accurate). Technical details are few and far between as of writing. The publication learned that the 2.5 will be part of the Cylinder Set Strategy (CSS) family of engines and that it will be mechanically related to the 2.7-liter currently found in the Chevrolet Silverado 1500, among several other models. It will feature dual overhead camshafts. It's too early to tell which models the 2.5-liter four-cylinder will end up in, or how much power it will generate. The output will likely depend on the application. For context, the 2.7 delivers 310 horsepower at 5,600 rpm and 348 pound-feet of torque between 1,500 and 4,000 rpm in the Silverado. In the smaller Colorado, it provides anywhere between 237 and 310 horsepower depending on the trim level selected. While this is pure speculation, our crystal ball tells us the engine will end up powering crossovers. It's an easy deduction to make. We can't imagine it will be offered in the Silverado, and seeing it in the Colorado is unlikely because its entry-level engine develops 237 horsepower; there's likely not much of a market for a midsize truck with 200 or so horsepower. Putting it in the Corvette wouldn't make sense and the Camaro has nearly reached the end of its life cycle without a successor planned. This leaves us with Chevrolet's range of crossovers, like the Equinox, as well as their GMC-, Buick-, and Cadillac-branded counterparts. We're not discounting the possibility that the cars set to receive the 2.5 haven't been unveiled, but those are likely crossovers, too; the odds of seeing another big Chevy sedan are very, very low. General Motors hasn't commented on the report, and it hasn't publicly announced plans to expand its CSS family of engines. If the report is accurate, we should learn more about the new turbocharged, 2.5-liter four-cylinder engine in the not-too-distant future. Featured Gallery 2022 Chevrolet Equinox RS View 56 Photos Buick Chevrolet GM GMC

Electric pickups compared: 2025 Ram 1500 REV specs vs. Silverado EV, F-150 Lightning

Now that the 2025 Ram 1500 REV has been revealed, along with its most important specifications, we now have information on all of the mainline Big 3 electric full-size pickup trucks. So it's time to see how the numbers stack up, because trucks are all about numbers. We'll see how the Ram compares to the power, battery capacity, payload, towing and other features of the 2024 Chevy Silverado EV and the 2024 Ford F-150 Lightning. Power and torque The Ram has just one powertrain option. It features two electric motors making 654 horsepower and 620 pound-feet. That gives it the most powerful standard powertrain, if not the most torque, as the Chevy Silverado EV has 510 horsepower and 615 pound-feet of torque, while the F-150 Lighting has 452 horsepower and 775 pound-feet. But the Chevy and Ford each have upgraded motor combinations. The Silverado is the most potent with 754 horsepower and 785 pound-feet, and the F-150 has 580 horsepower and 775 pound-feet. The GMC Sierra EV will also be available with this more powerful pair of motors, and most of its specifications will be the same as the Silverado. There are a couple of exceptions which we'll note when they come up. All three trucks come standard with dual motors and all-wheel drive, regardless of output, battery or trim level. They're all available with locking rear differentials, too. Ford F-150 Lightning front low View 48 Photos Battery, range and charging The Ram is packing some serious packs of batteries. The standard model gets 168 kWh and an estimated range of 350 miles. And the optional 229-kWh pack is estimated to deliver 500 miles of range. That's more capacity and range than the others. It also boasts an 800-volt battery system that allows for close to 350-kW charging. The Ford F-150 Lightning has a base battery of 98 kWh with a range around 230 miles. Optional is a 131-kWh pack with between 300 and 330 miles of range, depending on other vehicle specifications. It's the slowest charger, only allowing 150-kW charging maximum. The Silverado EV's battery specs are a bit nebulous. At launch, it will only be available with one battery pack option that GM claims will provide around 400 miles of range. The company didn't give an exact capacity, though. We would guess its size falls between the Ram's 168 and 229 kWh packs. A smaller battery pack will be offered later, with a shorter but unknown range. The Silverado can use 350-kW fast charging like the Ram.

GM resumes production of its 3.0-liter turbodiesel straight-six

General Motors temporarily stopped taking orders for trucks and SUVs equipped with the 3.0-liter Duramax turbodiesel six-cylinder engine in August 2021 due to a supplier shortage. Reports claimed the pause would last through 2021, but the engine is already back in production. Enthusiast website GM Authority learned from sources inside General Motors that the straight-six is once again coming off the assembly line at the Flint Engine Plant in Flint, Michigan. There's no official word on precisely what the problem was linked to and whether it was related to the on-going chip shortage that's wreaking havoc across the automotive industry. All we know is that the pause lasted for about two weeks. Called LM2 internally, the six is available in Chevrolet's Tahoe, Suburban, and Silverado 1500 and in GMC's version of these trucks. It's also an option in the Cadillac Escalade. It develops 277 horsepower at 3,750 rpm and a V8-like 460 pound-feet of torque at 1,500 rpm in every application, and it allows these big behemoths to post surprising fuel economy numbers. Fitted to a rear-wheel-drive Tahoe, the Duramax returns 21 mpg in the city, 28 mpg on the highway, and 24 mpg in a combined cycle, figures that make it more efficient than a Blazer. Demand for the diesel-powered trucks is relatively high. While the shortage undoubtedly took a toll on sales, the Duramax represented 8% of Suburban sales and 6% of Tahoe sales in May 2021. There are no other diesel-burning full-size SUVs available new so they have the market to themselves. On the truck side, Ram still makes the EcoDiesel available on some 1500 trims but Ford abandoned the segment. Related Video: Featured Gallery 2021 Chevrolet Tahoe RST View 24 Photos Chevrolet GMC Truck SUV Diesel Vehicles