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Leaked GM document shows GMC Sierra I6 diesel is more powerful than F-150's

GM told us earlier this year that the 2019 GMC Sierra would be getting a 3.0-liter I6 diesel option, but it never mentioned power or fuel economy figures. Hold the phone though, because a leaked GM Canada document just showed up online that lists out the details we've been waiting for. Originally published by TFL Truck, the 3.0-liter oil-burner supposedly makes 282 horsepower and 450 pound-feet of torque. For those who are counting, that's more than the Ford F-150's 250 horsepower and 440 pound-feet from its 3.0-liter diesel. It soundly bests the 240 horsepower and 420 pound-feet of torque from Ram's 3.0-liter diesel as well. Fuel economy is another story, though. The promotional material states that it will get 28 mpg on the highway, which is 2 mpg short of the F-150's 30 mpg — mind you, it's only capable of that magical 30 mpg figure in rear-wheel drive form. There's another caveat here, too; these are numbers for Canada, so they're not exactly finalized EPA figures. However, we wouldn't expect drastic differences between the two when the American numbers come out. The leaked documents also state the diesel Sierra will be capable of towing 7,800 pounds. That number seems remarkably low when compared to the F-150, which can tow up to 11,400 pounds with its diesel. Extra power and torque would have us assume that GM could get even better numbers than Ford, so we're going to hold our final judgment for official word. A 10-speed automatic will do the shifting on the diesel, just like on the 6.2-liter V8. Since the Chevy Silverado is also expected to get this engine, we can assume the figures would be almost, if not identical, to those we see here. We recently drove the 2019 Sierra and Silverado without the diesel engines, so go check those reviews out if you'd like to know more of our thoughts on the redesigned GM trucks. Related video:

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.

Burt Reynolds' vehicles up for auction at Barrett-Jackson

Burt Reynolds' influence on car culture cannot be overstated. Be it "Smokey and the Bandit" or "Cannonball Run," his films inspired a generation of car enthusiasts. He died a few weeks back from cardiac arrest at age 82. This weekend, four vehicles from Reynolds' personal collection — three Pontiacs and a Chevy — will go up for auction at Barrett-Jackson in Las Vegas. It seems Reynolds had plans to sell the cars before he passed. He even filmed a short teaser for the auction and planned to attend the event himself. Three of the cars are Pontiac Trans Ams. Two are re-creations of the cars he drove in "Bandit" and the film "Hooper." Both are 1978 models. The third Trans Am is from 1984 and was used to promote Reynolds' USFL team, the Tampa Bay Bandits. The fourth vehicle is a 1978 Chevy R30 pickup truck. It's styled like the truck he drove in "Cannonball Run." None of the vehicles were actually used in the movies. But they were registered in his name, making them far more legitimate than some other movie-inspired clones. It's unclear how many Bandit Trans Ams Reynolds has owned over the years. Another car connected to him sold for $450,000 back in 2014. His death is sure to drive the price of these new cars even higher. Related Video: Image Credit: Barrett-Jackson Celebrities Chevrolet Pontiac Auctions Truck Coupe pontiac trans am burt reynolds