2005 Dodge Ram 2500 Service Truck (engine Has Low End Noise-spun Bearing?) on 2040-cars

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2015 Ford Mustang vs. Camaro and Challenger [w/poll]

The horsepower wars are tightening among the Detroit Three, as the Ford Mustang, Chevrolet Camaro and Dodge Challenger are getting bigger, more powerful, and yes, more fuel efficient.
That came into sharper focus this week as more information was revealed about the most insane Challenger ever - the 707-horsepower Hellcat - followed quickly by Ford's in-depth showcase of the 2015 Mustang in Dearborn.
It's shaping up to be a golden age for enthusiasts, and what's under the hood is becoming more important than ever.

2016 Dodge Viper ACR First Drive [w/video]

The Dodge Viper is not a comfortable car. Livable, yes. The interior is covered in fine materials. But you still climb over a hot door sill to enter the tiny cabin. And the frequency range of the engine's noises seem specifically designed to cause headaches. What happens, then, if you remove all pretense of civility from a Viper and add equipment solely aimed at improving lap times? You would have the 2016 Dodge Viper ACR. In terms of achieving its purpose, this car is a absolute success. In many ways it's also the most honest Viper of the current generation. Prices start at $121,990 (including $2,100 gas-guzzler tax and $1,995 destination), or $32,900 more than the least expensive Viper. In ACR trim, the Viper loses the under-carpet padding, 9 of 12 speakers plus amplifier, carpet and trim from the cargo area, and sound deadening in front of the rear wheel wells. The parts of the interior still covered add healthy amounts of Alcantara or optional carbon fiber. That weight loss is compensated by the addition of go-fast bits like the giant rear wing (or the larger "x-wing" on the Extreme Aero Package), 10-way adjustable Bilstein Motorsports shocks, Brembo carbon-ceramic brakes, a rear diffuser, and a front splitter. Total claimed curb weight is 3,392 pounds in Aero trim (standard ACR trim is 18 pounds lighter), which is within a few stone of the rest of the Viper lineup. The diffuser strakes and leading edge of the splitter are removable, made to be replaced after rubbing on track tarmac and make street driving slightly more practical. Not that you'd want to drive the ACR on the street, with the lack of noise insulation and spring rates twice as stiff as the Viper TA, but it is street-legal. Dodge claims the DOT-approved Kumho Ecsta V720 tires on the ACR allow faster lap times than some race compound tires. Our test was limited to on-track shenanigans at Virginia International Raceway. Which is fitting because we wouldn't have anything good to say about driving the car on the street. The ACR is, essentially, a race car sold in the showroom, although with the Viper's 1 of 1 customization program, your custom build can include as many creature comforts as you like. Lined up in pit lane at VIR, the Viper ACRs for our evaluation blur the air with heat shimmer. All of the test cars have air conditioning, but that shuts off at full throttle with a six-second reset.

Killing the Dart and 200 might lower FCA's fuel economy burden

Killing the Dodge Dart and Chrysler 200 could allow FCA US to take advantage of an intriguing quirk in the next decade's fuel economy regulations. By increasing its ratio of trucks versus cars, the automaker might not need to worry so much about hitting the more stringent efficiency rules. At first thought, it might seem harder for an automaker with a ton of trucks to meet the government's mandated 54.5 mile per gallon corporate average fuel economy for 2025. However, every company doesn't need to hit that lofty figure, according to The Detroit Free Press. The exact target varies by the product mix between trucks and cars. "While passenger car and light truck categories have separate CAFE targets, it's still true that more trucks versus cars in a company lineup means a lower combined CAFE target," Brandon Schoettle, Project Manager Sustainable Worldwide Transportation at the University of Michigan Transportation Research Institute, told Autoblog. "While passenger car and light truck categories have separate CAFE targets, it's still true that more trucks versus cars in a company lineup means a lower combined CAFE target." FCA US' current product blend has 80 percent pickups and CUVs, which means the company stands to benefit from a lower fuel economy target. It might not seem entirely fair environmentally, but this is a great move from a business perspective. The new CAFE rules aren't set in stone, according to The Detroit Free Press, but potentially taking advantage of the regulation is just one more reason to cut the Dart and 200. Modern crossovers also aren't gas guzzlers like older SUVs, which could make it easier to hit the fuel economy target. "Utilities offer practicality and versatility that cars do not, and now, built on car architectures, they do not penalize consumers on fuel economy as they once did," AutoTrader Senior Analyst Michelle Krebs told Autoblog. Schoettle warns that FCA is still making a gamble by killing the small sedans. "Depending on the previous sales volumes and how much these vehicles might have exceeded their specific CAFE targets, it's possible that these cars helped earn CAFE credits for FCA that they could bank for future use," he said. "Future sales breakdowns [car vs.