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GM exploring ways to raise half-ton Duramax diesel tow rating

Lots of truck owners cheered when GM announced fuel economy numbers for the 2020 Chevrolet Silverado with the 3.0-liter Duramax diesel inline-six. Even after Ram let loose its EPA mileage ratings for the 2020 Ram 1500 EcoDiesel, the Chevy oil-burner still took the trophy. The victory was years in the making, GM engineers spending an entire four-year development cycle refining the LM2 Duramax to increase mileage. The tradeoff, as well all know by now, is towing; the Duramax in half-ton duty pulls a maximum 9,300 pounds in the Silverado. Rivals across town can do more, the Ford F-150 PowerStroke rated at 11,500, the Ram 1500 EcoDiesel game to pull 12,560. GM engineer John Barta told Muscle Cars & Trucks that more hauling chops could be on the way, explaining, "We’re actually looking at upgrading some of the materials around (the engine bay) to see if we can maybe raise our tow rating." Engine bay materials are at issue due to thermal complexities underhood. John Barta, GM's assistant chief engineer of diesel engine controls, said the Duramax's inline-six configuration allowed engineers to get emissions hardware like the combined selective catalytic reduction, diesel oxidation catalysts, and diesel particulate filter unit closer to the engine, where it heats up quicker, getting emissions down quicker. But that filter puts another heat source in those confines, enforcing a cap on the tow rating to keep the engine and other systems from overheating. "If you look under the hood," he said, "youÂ’ll see a significant amount of silver ‘moon tapeÂ’ around to make sure things arenÂ’t getting overheatedÂ… if we were to go up in higher towing, which we can, we start impacting the possibility of deteriorating some of the components.” There isn't much space for more grille, so swapping for a better grade of "moon tape" or a different kind of material could reduce engine bay heat, extracting a higher tow rating in the process.  It's important to note a point Barta's been making for months about the Duramax figures, though. "Even though itÂ’s nice to brag about big numbers, in reality, light duty customers are not towing that large with their trucks," and, "We do know that (95 percent) of our light duty customers donÂ’t tow over 9,000 pounds." On our First Drive of the 2020 Silverado diesel we called out the tow rating, but emphasized that the Chevy and GMC have more important challenges to overcome.

Burt Reynolds' movie re-creations fetch $379,500 in Vegas

The recent death of Hollywood legend and automotive enthusiast Burt Reynolds helped drive up the value of four of his former cars from the 1970s and '80s, which sold last weekend at Barrett-Jackson's Las Vegas auction for a combined $379,500. Reynolds, who died Sept. 6 at age 82, had offered three Pontiac Trans Ams — two of them re-creations of the cars he drove in "Smokey and the Bandit" and "Hooper" and the third from 1984 used to promote his United States Football League team, the Tampa Bay Bandits. The fourth was a 1978 Chevrolet R30 pickup truck, styled like the one featured in "Cannonball Run." The "Bandit" re-creation, a 1978 Pontiac Firebird Trans Am that Reynolds ordered to be as "movie-correct" as possible but featuring a custom-built 200-4R automatic transmission, sold for $192,500. The car features a freshly built Pontiac 400 cubic-inch V8 mated to a four-speed automatic and featuring all-new Butler Performance parts and air-conditioning components. Reynolds reportedly said this was his favorite car from his films, and it even came with an authentic movie-correct CB radio and CB antenna. The red retro-rocket "Hooper" '78 Firebird, with a 403 cubic-inch V8 and a three-speed automatic, hammered for $88,000. By comparison, a gold 1978 Trans Am also offered at the Las Vegas auction but not connected to Reynolds fetched $27,500. The 1987 Chevy R30 pickup was a re-creation of the Indy Hauler pace truck seen jumping over a moving freight train in "Cannonball Run." It hammered for $49,500. The fourth car never appeared in any of Reynolds' films but is instead the only surviving example of two Trans Ams used to promote the Tampa Bay Bandits of the now-defunct USFL, having been driven out onto the field by Reynolds and his late friend and co-star, Jerry Reed, during opening day one season. It also sold for $49,500. At the Barrett-Jackson Scottsdale Auction in 2016, Reynolds accompanied a 1977 Trans Am used to promote "Bandit" onto the auction block. That car sold for $550,000. Related Video: Featured Gallery Burt Reynolds 2018 Barrett-Jackson Las Vegas Auction Image Credit: Barrett-Jackson Celebrities Chevrolet Pontiac Truck Coupe Performance celebrity pontiac trans am pontiac firebird burt reynolds

Corvette Z06 and Viper TA square off at the strip

There are many long-standing grudge matches among automobiles: 911 vs GT-R, Mustang vs Camaro, Ferrari vs Lamborghini... but as far as high-end American metal goes, it doesn't get much more legendary than Viper vs 'Vette. So after Chevy released the new Corvette Z06, we knew it was only a matter of time before it would have to square off against the Viper TA. And what better place to pit these two parallel pillars of American performance than on the drag strip? Fortunately that's just what we have here. In one corner, the 2014 Dodge Viper TA, with its 8.4-liter V10 pumping out 640 horsepower and 600 pound-feet of torque. In the other, the 2015 Chevrolet Corvette Z06, the supercharger on its 6.2-liter V8 more than making up for the discrepancy in displacement and cylinder count to produce 650 hp and just as much torque. But numbers don't tell the whole story, so watch the video clip to see which reaches the end of the quarter-mile first. News Source: To the Floor via YouTubeTip: James Chevrolet Dodge Videos drag race chevy corvette z06 quarter mile drag strip srt viper ta