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Why an independent rear suspension for GM's new, full-sized SUVs wasn't easy

A Motor Trend report last month laid out how Cadillac's 4.2-lier twin-turbo Blackwing V8 could be an orphan due to cost concerns in the GM empire. Last-minute chassis changes to Cadillac's new sedans and XT6 crossover led to engine bays that couldn't fit the Blackwing. On the SUV side, according to the report, the new independent rear suspension for big people haulers cost so much to implement that GM ruled out reworking the Escalade to accept the Blackwing. At least one commenter rightly asked how could a suspension swallow that much money. A new piece in Motor Trend has the answer. The excellent Alissa Priddle spoke to Tim Herrick, GM's executive chief engineer for full-size trucks, about why the clean-sheet IRS cost "multimillions of dollars."  First, GM would need to build a new body shop at the Arlington, Texas plant that assembles the automaker's big SUVs to stamp the numerous wholly new parts and panels accommodating an IRS. Then GM would need to design and pay for a new assembly process. On top of those up-front costs, there was the incremental cost of the four-link IRS components being more expensive than those in the trucks' former leaf-sprung solid axles. Herrick endured so many rejections for so long that he remembers the date and time when he got approval for the new unit. He said it came down to a meeting where he told a higher-up, "I'll make you a deal: If we get to the reveal, or if we launch this and you think this was a dumb idea, I'll hand you my badge and let you walk me out." Head to Motor Trend to read the full story. Based on Herrick being on stage to help present the new SUVs to the press, and on our First Ride in the new Chevrolet Tahoe and Suburban at GM's Milford Proving Grounds, it appears this will have a happy ending for all involved. Furthermore, since Herrick worked on the T1 platform that supports the big SUVs as well as the light- and heavy-duty pickups, he understood the demands on the commercial side, too. That could be why when Roadshow asked Tim Asoklis, chief engineer of the Tahoe and Suburban, if the new IRS could endure life in the Chevrolet Silverado and GMC Sierra, Asoklis answered, "Oh, absolutely." Related Video:    

Hagerty kicks back with Ringbrothers for a look at the Recoil

Over the years, Ringbrothers has shown the ability to mix a meticulous eye for style and serious amounts of horsepower with customs like the Pantera-based Adrnln. The company's recent project, a tuned 1966 Chevrolet Chevelle called Recoil, is some of its best work yet and already has Jay Leno's denim-clad stamp of approval. Now, Hagerty is taking a look, while digging into the history of the actual Ring brothers: Mike and Jim. The two guys grew up in a small town where owning a car was practically a necessity, and the brothers were already wrenching before they could even legally drive. Eventually, that passion grew into a business, which led to wonderfully customized performance vehicles like the Recoil. Hagerty gets a fascinating look into Ringbrothers tuning philosophy in its interview. Of course, the real interest lies in this custom Chevelle, and there's a chance to hear the absolutely ferocious sound from the Recoil's supercharged V8 in this clip.

Chevy Camaro is a good sport, wishes Ford Mustang Happy 50th

It was 1966 when Chevrolet launched its challenger to the wildly successful Ford Mustang, the Camaro. While the competition between the two brands was already healthy, the arrival of the Camaro set off one of the most intense, model-to-model rivalries in the industry.
That competitive spirit hasn't stopped Chevy and the Camaro from wishing Ford's iconic muscle car a Happy 50th Birthday as the Ford's April 17 anniversary rolls around. These two cars have been linked over the years, and while the rivalry took a break for a few years in the 2000s, today's competition between the Camaro and Mustang is as fierce as it's ever been.
You might recall that this friendliness when it comes to major milestones isn't too rare. Ford put on quite a display for General Motors' hundredth anniversary back in 2008. As the Camaro's fiftieth birthday approaches in 2016, we wouldn't be surprised to see the Mustang sending its best wishes to its Bowtie rival.