2009 Gmc Savana 3500 Base Cutaway Van 2-door 6.0l on 2040-cars

Auto blog

Diesel Power finds the ultimate modified oil-burner

For nine years, Diesel Power magazine has run the Diesel Power Challenge, this year's grindfest being "a week-long torture test that features seven events, nine trucks, 8,000 horsepower, and nearly 15,000 pound-feet of torque." The road to being crowned "the most powerful truck" starts with a dyno run, and then continues through the completion of a CDL-style obstacle course, an eighth-of-a-mile drag race while towing a 10,000-pound trailer, a quarter-mile drag race without a trailer, a fuel economy test in the mountains and finally a sled-pulling test through a 300-foot-long packed-mud pit.
What kind of trucks get into such a fight? Last year's winner, for instance - who upgraded his truck this year to prove he didn't "luck into the win" - drives a 2008 Ford F-250 Super Duty with a 6.4-liter Power Stroke V8 upgraded with a custom intake, Elite Diesel triple turbos and a two-stage nitrous system. Another competitor has a 2005 Dodge Ram 2500 powered by a 5.9-liter Cummins inline-six, upgraded with Garrett turbos, dual-stage nitrous, a seven-inch exhaust stack and twin fans built into the bed to cool the Sun Coast Omega transmission. The numbers on that truck: 1,255 horsepower, and 2,063 pound-feet of torque at the wheels. Naturally, as the image above might suggest, things don't always end well.
You'll find all five videos covering this years challenge below. A scene in the dyno video sums it all up perfectly: a competitor leaves his nitrous on too long and the crew is treated to some ominous poppings, he leans out the window, throws both hands up and shouts, "Amer'ca!"

Could the GMC Jimmy come back as a Wrangler fighter?

Every three or four years, two cars go into heavy media rotation in stories about supposed new competitors. The headlines go something like, "X automaker working on a vehicle to fight the iconic Y." The Y cars are the Porsche 911 and the Jeep Wrangler. For this story, the X automaker is GM. And since GM already has its 911-fighter poised for debut next month, we speak here of the Wrangler. Car and Driver writes that GMC might take another shot at a Jeep challenger, this time by rebirthing a body-on-frame Jimmy SUV. For any who don't know, GMC sold an S-15 Jimmy from 1982 to 2005, a twin of the Chevrolet S-10 Blazer. Those SUVs started their lives as the Chevrolet S-10 and GMC S-15/Sonoma pickups. The Blazer name has returned to the light, albeit without its old-school rugged manners. There's still an opening on the GMC side, though, so C/D says the idea would be to work that old magic on the GMC Canyon pickup. The report is more chaff than grist for the rumormill, with liberal application of phrases like "looking to come up with," "could be," "could take," and "could arrive." Having said that, a potential Jimmy model could come in a few years, could use the same six-cylinder gas and four-cylinder diesel engines as the Canyon, and could start around $30,000. The Jimmy could wear GMC's new mud-and-guts AT4 trim name, or become a mud-and-guts trim for the Canyon just as the ZR2 is for the Colorado. It's not an entirely crazy idea, however, when a body-on-frame Trailblazer SUV based on the Colorado sells in Latin America, Asia, and Australia and does pretty well in the mud and muck. GM's been on the edge of going to war with the Wrangler for at least 12 years, when a Hummer exec said the HX concept would debut at the 2008 Detroit Auto Show and go on sale in 2010 as the H4. In 2015, The Wall Street Journal said GM was canvassing GMC dealers about something to get in the ring with the Wrangler. And all that was before every other automaker had to watch Jeep open a money-counting operation to handle its Wrangler profits, and dealers started charging $20,000 markups on Gladiators. In May, spy shooters caught a sensor-laden Jeep running at GM's Milford Proving Grounds in Michigan. Earlier this month, Bloomberg reported GM is considering a Hummer revival as an all-electric hardcore SUV. So we will not be surprised if GM rolls out a Wrangler fighter in the near-ish future. But we won't be surprised if GM doesn't, either.

2014 Chevy Silverado details continue to dribble out

PickupTrucks.com has gotten its hands on a few more details concerning the 2014 Chevrolet Silverado and the 2014 GMC Sierra. General Motors held a conference call on the two trucks, allowing Jeff Luke, executive chief engineer for both, to answer a few questions. Luke said truck buyers are largely concerned with power and fuel economy, and as such, GM will continue to explore new methods of providing both. That may translate into any number of drivetrain permutations, including light-duty diesel engines, eight-speed transmissions or even a twin-turbocharged V6.
What's more, both the 2014 Silverado and its GMC twin will boast a tow rating of 11,500 pounds, but only when equipped with a max-trailering package. Without that special package, the rating drops to 10,200 lbs for regular cabs and 9,700 lbs for crew cabs. Buyers will no longer be able to opt for a 4.10 gear ratio.
We're also excited to hear that GM plans on making the Z71 package into something more than just a few a stickers. While Luke didn't go into details, PickupTrucks.com says "it will get significant improvements in the future." Head over to the site for a quick rundown of the call's highlights.