Chevrolet will introduce its full lineup of new bi-fuel (gasoline and compressed natural gas) Silverado Heavy-Duty pickups at the 2014 Chicago Auto Show. These 2015 HDs (the regular models were recently introduced in the mountains outside Phoenix) will use a special version of the existing OHV 6.0-liter V-8 and will be outfitted with a special tank and covering in the bed of the truck. The system is designed to allow drivers to select which fuel they want to use once the vehicle is warmed up, and will seamlessly switch to gasoline usage when the CNG tanks are depleted.
CNG does have a smaller bang in the compression chambers, so the resulting horsepower and torque numbers are smaller than when using gasoline. Factory ratings for the special-order LC8 6.0-liter V-8 are 360 horsepower and 380 pounds-feet of torque on gas, and 301 hp and 333 pounds-feet of torque running on CNG. Although there is a noticeable drop in throttle response and overall power, the average price of CNG for an equivalent gallon of fuel is typically less than half of a gallon of gasoline. Bi-fuel HDs will have a fuel range nearing 650 miles, depending on usage.
The 2015 Chevy Silverado CNG HDs will be offered in three-quarter-ton and one-ton (single rear wheel only) configurations in all three cab styles — regular, double and crew. When equipped with 4.10:1 gears (optional 3.73:1s are available), the maximum tow rating for these bi-fuel-equipped trucks is 13,000 pounds. This factory option is available for ordering now in the U.S. Pricing will follow.
To download and read the full Silverado HD CNG press release, click here.