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The Chevy and GMC also have the Ram 1500’s most-powerful engine choice, a 5.7-liter Hemi V-8, beat-at least in terms of output. They beat the Ford’s optional 6.2-liter V-8’s output and efficiency the Blue Oval’s 6.2 makes 411 horsepower and 434 lb-ft of torque and can only muster 12–13 mpg in the city and 16–18 mpg on the highway. Compared to the burliest iterations of the Ford F-150 and Ram 1500, the GM 6.2 twins are more powerful and nearly more efficient. Like the Silverado and Sierra’s other two engines, the 6.2 boasts fuel-saving cylinder deactivation, which can put four cylinders to sleep under light loads or cruising. First Drive: 2014 Chevrolet Silverado / 2014 GMC Sierra 6.2L V-8.Instrumented Test: 2014 GMC Sierra 1500 5.3L 4×4 Crew Cab.Comparison Test: 2014 Chevrolet Silverado vs.The gap between the 6.2 and the V-6 is wider, with the latter capable of 17–18 mpg city and 22–24 mpg on the highway, depending on whether rear- or four-wheel drive is selected. The four-wheel-drive 6.2 nets 14/20 mpg, down 2 mpg in both cycles to its 5.3-liter counterpart. Two-wheel-drive models get an estimated 15 mpg in the city and 21 on the highway-down 1 and 2 mpg, respectively, from the rear-drive 5.3’s 16/23. According to Chevy and GMC, that increased power isn’t penalized by drastically reduced fuel economy, at least relative to the smaller 5.3. The big V-8 sits above the base 4.3-liter V-6 and mid-level 5.3-liter V-8 in both trucks’ engine lineups, and brings 420 horsepower and 460 lb-ft of torque.
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At long last, the slow tide of information is all the way in: GM has finally released fuel-economy data for the Silverado and Sierra’s top-dog 6.2-liter V-8 engine. *Excludes commercial, marine, motorhome, and medium duty applications.GM’s latest pickup-truck twins, the Chevrolet Silverado and GMC Sierra, were completely redesigned this year, and the company opted for a slow, painstaking rollout of the trucks’ details, as well as output figures and fuel economy for the rigs’ 4.3-liter V-6, 5.3-liter V-8, and 6.2-liter V-8 engines. This is the caption for Layout Figure Tag 8.1L Vortec V-8 vs 6.6L Duramax Diesel Various marine and motorhome applications GM retired the engine internally following the 2006 model year, but continued to manufacturer the engine for applications outside GM vehicles through 2009.
#2001 chevy 8.1 vortec mpg manual
In Silverado and Sierra HD applications, the 8.1L Vortec was available mated to either the Allison 1000 automatic or ZF 6 speed manual transmission. In GMC and Chevrolet SUV applications (including Suburban and Yukon 2500 models), the engine was mated exclusively to the GM 4L85E four speed automatic transmission. The 8.1L's substantial torque rating and flat torque curve also make it suitable for marine and motorhome applications, typically as an economical option to more expensive diesel powertrain offerings. Owners can expect to see MPGs peak in the mid-teens on the highway and drop into single digit territory with heavy towing. Because the engine is only found in vehicles with a gross vehicle weight rating (GVWR) greater than 8,500 lbs, GM was not required to provide estimated fuel economy ratings through the EPA. However, those that acquire a vehicle with such an engine must obviously have needs that don't include fuel efficiency and the performance of the engine, particularly its low-end torque, is a more pertinent factor. One could argue that the Vortec's major disadvantage is its fuel economy or lack thereof.