Mustang 1995 A Black Beauty!! 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!"

Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.

Ford Mustang GT350 drops some camo

Now that we've poured over the 2015 Ford Mustang in its standard form, it's time to look ahead. We already knew (and heard - literally) that Ford was working on a higher-performance version of its 'Stang to replace the Shelby GT500, and earlier reports have stated that it will simply be called the GT350.
We don't have a ton of detail to go on, but this latest set of spy photos clearly shows a hood-mounted air scoop, which suggests a forced-induction powerplant is under the hood. However, this disagrees with earlier reports that the GT350 will be all motor, using a naturally aspirated engine to send massive horsepower to the rear wheels. Our spies also point out the functional vent aft of the front wheels to allow for better airflow, and the massive quad exhaust pipes can be seen, clear as day.
Expect to see the Mustang GT350 in April, when it debuts at the New York Auto Show in conjunction with the Pony's 50th anniversary. In the meantime, have a look at our gallery above to see the latest shots of the hot Mustang out testing.