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Dodge Challenger SRT Hellcat vs. Chevrolet Camaro ZL1 in latest Head 2 Head

"Olympian" is one of the terms we use to signify the greatest height, the seat of the gods. Yet Mt. Olympus is the second-highest peak in the Balkans ranges, overshadowed by the crest at Musala in Bulgaria's Rila mountains. Both great heights, but one is a little higher. That's how we get the Olympian Chevy Camaro ZL1 pitched at the Musalic Dodge Challenger SRT Hellcat in Motor Trend's latest episode of Head 2 Head. The side-by-side spec sheet is filled with farcical numbers. For the ZL1, that's a 6.2-liter V8 with 580 horsepower, 556 pound-feet of torque, a 4,051-pound curb weight, 0-to-60 miles per hour in 3.9 seconds, a quarter-mile time of 12.2 seconds and a base price of just $57,800. Opposing that, the Hellcat wrings out its 6.2-liter V8 for 707 hp, 650 lb-ft of torque, weighs 4,449 pounds, does the quarter in 11.7 seconds and has a base price of just $60,990. Except in the case of the Hellcat, when Motor Trend put it on the dyno the machine spit out a reading of 672 hp and 606 lb-ft at the wheels. If there's a 10-percent driveline loss through those beefed-up internals and heavy-duty eight-speed transmission, that means the Hellcat is actually rated at about 750 horsepower and 700 lb-ft. But once they get put on a closed-off strip of coast road in Northern California, there are only a few strands of hair between their respective performances. That's not the case for they sensations provide; host Jonny Lieberman calls one of them, "One of the most incredible cars ever made," and says, "It changes everything." Watch the video above to see who got the verdict and how. Related Video:

Cars.com runs 11-second quarter with Dodge Charger Hellcat

The Dodge Charger SRT Hellcat and its Challenger sibling are two of the heroes of the modern performance world. With a headline-grabbing 707 horsepower from a supercharged 6.2-liter V8, their output even shames many supercars. But how quick can one really cover a quarter mile? Cars.com recently decided to find out by taking a Charger Hellcat to the drag strip to see if the sedan lived up to Dodge's 11-second claims. The results were quite impressive. After 13 quarter-mile runs of adjusting variables like the tire pressures and the car's various electronic aids, the Charger Hellcat managed a pass in 11.03 seconds at 126.61 mph – the pinnacle result of the day. This car was mechanically stock and wore the optional Pirelli P Zero tires. According to Cars.com, other quick sprints reached 11.09 seconds and 11.1 seconds, which even beat the site's 11.41-second best from a Challenger Hellcat last year. Getting the Hellcat's prodigious power down without losing traction was a challenge, even on the summer tires. Cars.com thought it had a run that could have dropped below 11 seconds, but then the wheels spun. Using the factory-recommended pressures, the Charger Hellcat was no still slouch with an 11.27-second time recorded, but taking things down to 25 psi proved the quickest at the strip. We already knew that the Charger Hellcat was a wonderful vehicle for eating up huge gulps of asphalt at high speeds and could verify its 204-mile-per-hour top speed (quite a bit faster, incidentally, than the Ferrari California T's 196 mph top-speed). Apparently, the 11-second quarter-mile claim is just as accurate. Also, for any curious owners, the Cars.com story divulges many of the tweaks required to reach this seriously quick time. Related Video:

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!"