1990 Chevrolet C1500 454 Ss Standard Cab Pickup 2-door 7.4l on 2040-cars

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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

Nissan Leaf, Chevy Volt sales both down in June

The best news you can slice out of today's sales reports for June 2015 is that things have to get better at some point. Most likely, sales of the Nissan Leaf and the Chevy Volt will see a big increase once the second-generation models of both vehicles arrive (the Volt later this year and the Leaf, well, at some point after that). For now, though, the best-selling EVs in the US are both suffering compared to where the numbers were at last year. The numbers are also suffering compared to last month, which was the best of the year so far for both vehicles. Looking just at June, though, Leaf sales totaled 2,074 units, down 11.6 percent from a year ago (the EV sold 2,347 units in June 2014). The world's best-selling EV is now down 22.9 percent for the year so far (12,736 in 2014 vs. 9,816 in 2015). Things are a bit worse over at Chevy, where news about the pretty-much-better-in-all-ways second-gen Volt is coming out with great frequency. Nonetheless, people are still buying the outgoing Volt, snapping up 1,225 units in June. That's down 31.1 percent from the 1,777 sold in June 2014. So far in 2015, the Chevy has sold 5,622 Volts, a drop of 34.7 percent from the 8,615 Volts sold in the first six months of 2014. As always, we're working on our full tally of green car sales for June and will bring that to you shortly. For now, discuss the sales of these two plug-in pioneers in our Comments, below. News Source: GM, Nissan Green Chevrolet Nissan Hybrid ev sales

Callaway debuts its new C7 Stingray at National Corvette Museum

Callaway showed off its first tuned version of the 2014 Corvette Stingray at the National Corvette Museum last week, giving the rampant enthusiasts of America's sports car a look at the roughly 620-horsepower, supercharged rocket.
Unlike the Corvette SC610 we showed you back in January, this Stingray packs a fair bit more oomph. Horsepower is only up ten ponies, but torque has jumped from 556 pound-feet to "at least" 600 pound-feet. Neither horsepower nor torque is official quite yet, although Callaway is expecting to know just what its creation can do once testing and validation is completed later this month.
The 6.2-liter, supercharged V8 now boasts a new, three-element intercooler, which Callaway claims only allowed the inlet air temperature to increase by ten degrees Fahrenheit during dyno runs. Previous designs saw a 35-degree-Fahrenheit jump. The exhaust system has also been fettled with, and now is even less restrictive.