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AMC Trans Am Javelin SST, an ultra-rare underdog, is up for auction

Among the rarest of the American muscle cars that went racing in the early Seventies — cars including the Camaro Z/28 and the Boss 302 Mustang — the 1970 AMC Trans Am Javelin SST may be the most hard to find, and among the most valuable. Only 100 units of this unique Javelin were produced, and one of them is up for auction at the Mecum event in Dallas on September 20. The Trans Am Javelin was fashioned in a patriotic livery of tricolor paint — red, white and blue — and arrived after the American Motors Corporation had decided in 1968 to compete in the Trans Am racing series against Ford and General Motors. The company's chief driver, Mark Donohue, would dominate the 1971 season, taking seven wins in his Javelin AMX and that yearÂ’s SCCA Trans-Am Championship. AMC took the trophy with 82 points, well ahead of Ford's 61, Chevrolet's 17 and Pontiac's paltry 7. The example listed for auction came equipped with a 390-cubic-inch V-8 engine with 325 horsepower at 5,000 rpm and 420 pound-feet of torque, power steering and brakes, dual exhaust, BorgWarner four-speed manual transmission and Hurst competition shifter. Its “ram induction system” sealed a chamber around the air filter so that cool air from the functional hood scoop would be funneled into the intake. This JavÂ’s factory price was $3,995 — a mere $32,000 or so in today's money, though it was expensive by the standards of the time. The 100 Trans Ams were among 19,714 Javelin units built in 1970, so they started out rare, and today the surviving examples are highly collectible, if and when they come up for sale. No bid estimate is available yet. Related Video: Motorsports Chevrolet Ford Pontiac Auctions Automotive History Racing Vehicles Classics

Cadillac XT4 crossover to be built in Kansas City

Cadillac's upcoming XT4, a crossover we've previously known as the XT3 in a long series of spy shots of heavily camouflaged mules, will be built at General Motors' assembly plant in Kansas City on the same platform as the Chevrolet Malibu, Bloomberg reports, citing people familiar with the plan. That will give Cadillac another entry in the red-hot luxury crossover segment and, GM hopes, help to reverse a sales slump in the U.S. It'll also breath life into the Kansas City plant that makes the slow-selling Malibu, where GM cut a third shift last year, by sharing the assembly line between the crossover and sedan and defraying costs for each vehicle. The XT4 was known most recently as the XT3, with styling cues based on the Escala concept sedan from 2016. It's slightly smaller than the XT5, Cadillac's top-selling vehicle, and will also augment the full-size Escalade in Cadillac's stable of SUVs when it makes its expected debut later this year. Cadillac last week reported its second-highest-ever sales mark with 356,467 vehicles, an increase of 15.5 percent over 2016. But that mark papers over an 8 percent sales decline in the U.S. to 156,440 vehicles. The luxury brand is on a hot streak in China, where sales jumped 50.8 percent last year to 175,489 units.Related Video: Image Credit: Brian Williams Plants/Manufacturing Cadillac Chevrolet GM Crossover sales cadillac xt5 cadillac xt4 cadillac xt3

Chevy confirms 2016 Camaro will have wheels, brakes

Good news, everyone! Chevrolet has issued yet another round of teaser images and information about the sixth-generation Camaro, set to debut in Detroit on May 16. This time around, Chevy's teaser images confirm that the new car will not only have wheels and tires (Goodyear Eagle F1s, no less), but brakes as well. On top of that, we now know that the new Camaro will be 28-percent stiffer than the outgoing model. "The more rigid body structure allowed the engineers to more precisely calibrate the steering and suspension systems because they didn't have to compensate for chassis flex. The lighter structure also enabled the size and mass of elements such as the wheels, tires and brakes to be scaled accordingly," GM said in a press release, which you can read below. We've already learned that the new coupe will be 200 pounds lighter than its predecessor, has a bunch of unique parts, and according to GM's Mark Reuss, will outperform the Ford Mustang in every way. Now, it's only a matter of time before we see the sixth-gen Camaro, but surely not before Chevy issues even more teasers and information. Related Video: 2016 Camaro is Stronger, Lighter and More Responsive Computer aided engineering contributes to 28 percent greater structural stiffness DETROIT – The engineering team spent 9 million hours of computational time honing the driving experience of the all-new 2016 Chevrolet Camaro before the first prototype turned a wheel. The structural modeling led to the Gen 6 Camaro being 28 percent stiffer than the current model. "The modeling abilities of computer aided engineering are advancing at incredible rates," said Jim Karlavage, Camaro program engineering manager. "Today, we can accurately model opportunities to add torsional strength without adding unnecessary mass. The result is a lighter, stiffer structure that benefits every aspect of the driving experience." The more rigid body structure allowed the engineers to more precisely calibrate the steering and suspension systems because they didn't have to compensate for chassis flex. The lighter structure also enabled the size and mass of elements such as the wheels, tires and brakes to be scaled accordingly. "The structural weight savings are compounded by opportunities to reduce un-sprung weight," said Karlavage.