2004 Chevrolet Silverado 1500 Z71 Extended Cab Pickup 4-door 5.3l 203k Miles on 2040-cars

Auto blog

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.

Zombie cars: 9 discontinued vehicles that aren't dead yet

Car models come and go, but as revealed by monthly sales data, once a car is discontinued, it doesn't just disappear instantly. And in the case of some models, vanishing into obscurity can be a slow, tedious process. That's the case with the 12 cars we have here. All of them have been discontinued, but car companies keep racking up "new" sales with them. There are actually more discontinued cars that are still registering new sales than what we decided to include here. We kept this list to the oldest or otherwise most interesting vehicles still being sold as new, including a supercar. We'll run the list in alphabetical order, starting with *drumroll* ... BMW 6 Series: 55 total sales BMW quietly removed the 6 Series from the U.S. market during the 2019 model year. It had been available in three configurations, a hardtop coupe, a convertible and a sleek four-door coupe-like shape.   BMW i8: 18 total sales We've always had a soft spot for the BMW i8, despite the fact that it never quite fit into a particular category. It was sporty, but nowhere near as fast as similarly-priced competitors. It looked very high-tech and boasted a unique carbon fiber chassis design and a plug-in hybrid powertrain, but wasn't really designed for maximum efficiency or maximum performance. Still, the in-betweener was very cool to look at and drive, and 18 buyers took one home over the course of 2021.   Chevy Impala: 750 total sales The Impala represented classic American tastes at a time when American tastes were shifting away from soft-riding sedans with big interior room and trunk space and into higher-riding crossovers. A total of 750 sales were inked last year.   Chrysler 200: 15 total sales The Chrysler 200 was actually a pretty nice sedan, with good looks and decent driving dynamics let down by a lack of roominess, particularly in the back seat. Of course, as we said regarding the Chevy Impala, the number of Americans in the market for sedans is rapidly winding down, and other automakers are following Chrysler's footsteps in canceling their slow-selling four-doors. Even if Chrysler never really found its footing in the ultra-competitive midsize sedan segment, apparently dealerships have a few leftover 2017 200s floating around. And for some reason, 15 buyers decided to sign the dotted line to take one of these aging sedans home last year.

Recharge Wrap-up: Free chargers for Canadian ELR buyers, Renovo gets funding for EV supercar

Chevrolet offers versions of its Express passenger van with B20 biodiesel and E85 capability. Customers can buy the van with the Duramax turbodiesel V8, which is compatible with the 20-percent biodiesel blend. There is also a FlexFuel V8, which can use the 85-percent ethanol gasoline blend. It's a great option for shuttling the whole soccer team to practice using renewable fuels. Read more at Domestic Fuels. Early buyers of the Cadillac ELR in Canada will get a 240-volt charger installed at their home for free. It should help convince some buyers to adopt the range extended luxury EV. Cadillac's Chief Marketing Officer Uwe Ellinghaus says, "Professional installation of the fastest home-charging unit is a natural way to mark the introduction of ELR to the luxury market." Read more in the press release below. Renovo has received venture capital funding from California-based True Ventures to build its Coupe electric supercar. The impressive EV, with its 500 horsepower and 1,000 pound-feet of torque, is an inspiring vehicle built by a promising company, according to its financial backers. Toni Schneider of True Ventures says that Renovo has "created incredibly advanced technology and a beautiful machine that is well positioned to disrupt the automotive market." Read more in the press release below. Renault says it will build its Fluence ZE electric car in China for an unnamed brand, pending government approval. Chief Executive Carlos Ghosn announced the plan at a test drive event in France on Monday. Renault has a partnership with Dongfeng Motors to build and sell its cars in China. Read more at Reuters. Germany has lifted its ban on Uber. While the German court believes the ride-hailing service is operating illegally without proper licensing for drivers, it says Taxi Deutschland waited too long to file the case against Uber. The taxi association plans to appeal the decision soon. See more in the video below, and read more at The New York Times. A new report from UC Davis claims that a global expansion of public transit could save 1,700 megatons of carbon dioxide yearly and over $100 trillion by 2050. A "high-shift scenario" would be necessary, wherein governments invest in rail and clean buses, expand biking and walking infrastructure and shift focus away from projects that encourage car use. This shift to public transit would especially be important in the US, China and India. Read more in the press release below.