2011 Chevrolet Silverado Z71 4x4 on 2040-cars

Auto blog

Chevy Colorado, GMC Canyon get updated tachometers due to graphical error

After James Bearing bought a Chevrolet Colorado, he noticed a discrepancy between the truck's spec sheet and the truck's tachometer: Chevrolet said 3.6-liter V6 in the little pickup produces 305 horsepower at 6,800 rpm, but the the tachometer indicates a redline at 6,500 rpm. So either he wasn't making as much power as he was promised, or the tachometer display was incorrect. Bearing said he asked Chevy about it but got no response. Until now. A General Motors spokesman said the rev limiter is indeed set for 6,800 rpm, but the tach graphics "are slightly off" in the Colorado and the GMC Canyon, and submitted an SAE horsepower certification to back him up. If you're wondering how such a thing got past quality control... well, let's just say you're not alone. GM is going to fix "the graphics on future trucks," which makes it sound like Bearing will just have to learn to live with the indicated redline he's got. He could always pretend he's driving a sleeper, with four more ponies waiting to be unlocked in the danger zone for those who dare. Related Video: Featured Gallery 2015 Chevrolet Colorado: First Drive View 38 Photos Related Gallery 2015 GMC Canyon: Quick Spin View 27 Photos News Source: Auto Guide Auto News Chevrolet GM GMC Truck gmc canyon

24 Hours of Le Mans live update part two

We tasked surfing journalist Rory Parker to watch this year's live stream of the 2016 24 Hours of Le Mans. What follows is an experiment to experience the world's greatest endurance race from the perspective of a motorsports novice. Parker lives in Hawaii and can hold his breath longer than he can go without swearing. For Part One, click here. Or you can skip ahead to Part Three here. I write about surfing for a living. If you can call it a living. Basically means I spend my days fucking around and my wife pays for everything. Because she's got a real job that pays well. Brings home the bacon. Very progressive arrangement. Super twenty first century. I run a surf website, beachgrit.com, with two other guys. It's a strange gig. More or less uncensored. Kind of popular. Very good at alienating advertisers. My behavior has cost us a few bucks. I'm terrible at self-censorship. Know there's a line out there, no idea where it lies. I still don't understand any of the technical side. Might as well be astrophysics or something. For contests I do long rambling write ups. They rarely make much sense. Mainly just talk about my life, whatever random thoughts pop into my head. "Can you do something similar for Le Mans?" "Sure, but I know absolutely fuck-all about racing." "That's okay. Just write what you want." "Will do. But you're gonna need to edit my stuff. Probably censor it heavily." So here I am. I spent the last week trying to learn all I can about the sport of endurance racing. But there's only so much you can jam in your head. And I still don't understand any of the technical side. Might as well be astrophysics or something. While I rambled things were happening. Tracy Krohn spun into the gravel on the Forza chicane. #89 is out of the race after an accident I missed. Pegasus racing hit the wall on the Porsche curves. Bashed up front end, in the garage getting fixed. Toyota and Porsche are swapping back and forth in the front three. Ford back in the lead in GTE Pro. #91 Porsche took a stone through the radiator, down two laps. Not good. The wife and I are one of those weird childless couples that spend way too much time caring for the needs of their pet. French bulldog, Mr Eugene Victor Debs. Great little guy. Spent the last four years training him to be obedient and friendly. Nice thing about dogs, when you're sick of dealing with them you can just lock 'em in another room for a few hours. You don't need to worry about paying for college.

Callaway, Lingenfelter boost Corvette Z06 way beyond 700 hp

With 650 horsepower and just as much torque on tap, few would accuse the latest Corvette Z06 of being down on power. But for those who'll always demand more, two leading Corvette tuners have just announced new tuning packages for the Z06 to boost Chevy's flagship well beyond 700 horsepower. The more powerful of the two comes from Callaway Cars, which has added a larger supercharger, a triple-action intercooler, and more to increase output to a massive 757 horsepower and 777 pound-feet of torque. The result, according to Callaway, is a 0-60 time quoted at 2.8 seconds and a quarter-mile run in 10.5. The package also includes a reshaped hood, all manner of trim upgrades, and a three-year warranty, and will set you back nearly $17k on top of the cost of donor vehicle that currently lists for $79,000. In what could only come second relative to Callaway's kit, Lingenfelter Performance Engineering has also released a Stage 1 package for the Z06. The kit includes a new dry sump damper, upgraded supercharger pulley and drive belt, and more – all of which Lingenfelter says will boost the Vette's output up to 720 hp and 730 lb-ft. Revised performance figures weren't released, but despite the 37-horse, 47 lb-ft deficit, we doubt it'd trail Callaway's by much. But both would likely leave the stock Z06 in their dust, and you can read more about them in the press releases below. Related Video: Callaway Cars Releases Their Most Powerful Corvette - 757 bhp / 777 lb-ft - Z06-based Corvette upgrade boasts 32% larger supercharger, triple intercoolers, and consistent power - lap after lap The Numbers - Callaway Cars today announced power numbers and performance for the flagship model in their performance car lineup. Equipped with Callaway's GenThree Supercharger, the Corvette Z06 now produces 757 bhp @ 6,200 rpm and 777 lb-ft @ 4,500 rpm (SAE). A launch to 60 mph is now achieved in 2.8 seconds, and a quarter-mile in 10.5 seconds at 131 mph. Why Go Big, When You Can Go Bigger? - Size Matters. To reach that power (which is up from 650 bhp / 650 lb-ft) the supercharger itself needed to be bigger since the output of a positive displacement supercharger is proportionate to its size. The Callaway GenThree supercharger is 32% larger in displacement (2300cc vs 1740cc). Cooling - Callaway engineers recognize that a key contributor to maximizing power is reduction of inlet air temperature associated with forced induction.