1983 Cadillac Fleetwood Brougham D'elegance Sedan 4-door 4.1l on 2040-cars

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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:    

2015 Cadillac ATS-V gunning for the BMW M3

Spy photographers have spotted something interesting. Cadillac engineers have taken to public streets with the upcoming ATS-V and a playmate: the current BMW M3 Sedan. The prototype seen here wears a more aggressive front fascia, flared fenders and beefy brakes. Quad exhaust tips and what looks to be a small lip spoiler on the trunk deck sum up the most obvious visual changes over the standard ATS outside. Word has it the ATS-V will bow with the same twin-turbo 3.6-liter V6 available in the nose of the XTS. In that application, the engine is good for a stout 410 horsepower, which should be more than enough to hustle the sedan around a track.
Other details are still murky, however. First and foremost: will GM offer the ATS-V with an honest manual transmission, like it does with its big brother, the CTS-V? Something tells us we won't have long to wait to find out - the machine will likely bow next year as a 2015 model. Until then, dig in on our newest bevy of spy photos.

GM design boss Welburn says Lincoln isn't a Cadillac rival [w/poll]

General Motors Vice President of Global Design, Ed Welburn, had some dismissive words for a certain cross-town luxury brand during an interview with Car and Driver. When asked about his thoughts on Lincoln, Welburn deflected, before saying, "I don't consider Lincoln to be a competitor for Cadillac."
"They're not a global luxury brand. I don't consider them a competitor. Are they a competitor for Buick? Quite possibly. But not for Cadillac," GM's head designer explained. Welburn, who's been at the helm of GM Design North America since 2003 and is the first to hold the position of VP of Global Design, has been instrumental in the styling renaissance at GM, so predictably, Car and Driver's interview with him focused on the design aspect of cars.
During the interview, Welburn explicitly denied plans for a reborn Cadillac XLR, even as a new Chevrolet Corvette is hitting the market and strides are being made with Cadillac's V-Series performance arm saying, "We have a lot of cars that we're working on for the Cadillac brand. The XLR is not one of them right now."