2024 Ford F650 Supertruck on 2040-cars

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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!"

NHTSA closes Ford F-150 EcoBoost acceleration probe

Typically when we report on the findings of an investigation from the National Highway Traffic Safety Administration, it's because the government body has discovered a safety issue and prescribed a recall. In this case, however, NHTSA has closed an investigation into a reported performance deficit without ever getting to the recall stage.
The issue revolves around the Ford F-150 - specifically those equipped with the 3.5-liter EcoBoost engine - of which some 360,000 were built in the 2011, 2012 and 2013 model years. After receiving an initial 95 complaints, NHTSA opened an investigation last May - almost a year ago - into the reported issue of reduced engine power under hard acceleration. The agency has since received a total of 525 such complaints, and Ford itself reported receiving over 4,000.
Together, NHTSA and Ford determined that the problem resulted from cylinders misfiring, an issue itself stemming from water getting into the charge air cooler (CAC) mated to the turbochargers. In particularly humid or rainy conditions, water was found to get into the CAC, causing some of the cylinders to misfire, which in turn triggered the ECU to disable those cylinders in order to protect the catalytic converter from damage.

Muscle wins big at 2013 Amelia Island Concours as 1936 Duesenberg, 1968 Ford GT40 take top honors

The 18th-annual Amelia Island Concours d'Elegance took place this past weekend, and in one of the show's biggest years yet (bringing in more than 25,000 spectators and attracting more than 300 vehicles), two powerhouses ended up winning the judges' hearts. The top Concours d'Elegance award went to a 1936 Duesenberg SJN, while the Concours de Sport went to one of the celebrated marques, a 1968 Ford GT40.
Owned by Helen and Jack Nethercutt of Sylmar, CA, this flawless Duesy is described as "one of the most powerful open cars of the 1930s," and it displays design cues of the era like rolled fenders and a tapered rear end. The SJN's supercharged straight-eight allowed it to accelerate to 100 miles per hour in just 17 seconds - surely not a disappointing feat for its day.
On a much different level of performance and timelessness, this Gulf-livery GT40 from the Rocky Mountain Auto Collection is not outdone by the elegance of the big Duesenberg thanks to some well-documented racing history. This not only includes winning at LeMans in both 1968 and 1969 - Chassis No. 1075 also managed to win a total of six times in just 11 races.