1991 Cadillac Allante Convertible 2-door 4.5l ~ Red Beauty ~ Cold Ac ~no Reserve on 2040-cars

Auto blog

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:    

Cadillac Elmiraj Concept slinks in Leno's Garage

Jay Leno's Garage has moved to Pebble Beach for the week. This time around, the affable comedian is taking a look at the Cadillac Elmiraj Concept that debuted during the Monterey car week, and is talking to General Motors vice president of global design, Ed Welburn.
There's plenty of reminiscing about what concept cars were like when these two were kids, before a fairly deep dive into the striking Elmiraj Concept itself. Welburn shares a few anecdotes about the design process behind the two-door concept, including how his designers changed his mind on the grille design.
After bringing up the Cimarron, Leno makes a solid point that the Elmiraj would be a solid production car that could even spawn a four-door variant. We couldn't agree more. Take a look below for the full video from Jay Leno's Garage.

Cadillac confirms 'Blackwing' name, manual gearboxes for pumped-up CT4-V, CT5-V

Cadillac officially confirmed Tuesday that the high-output variants of its new CT4-V and CT5-V sedans will be dubbed "Blackwing," sharing a nameplate with GM's stillborn twin-turbocharged V8. As an added bonus, company representatives said for certain that both of Cadillac's new super-sedans will be offered with a manual transmission, confirming long-standing rumors to that effect.  "The Blackwing name has come to represent the very best of Cadillac performance engineering, craftsmanship and technology," said Cadillac chief engineer Brandon Vivian. "The new CT4-V Blackwing and CT5-V Blackwing build on the brand’s respected legacy of ultimate-performance driving experiences and elevate them even further." Cadillac says the two Blackwing sedans, which are successors to the critically acclaimed ATS-V and CTS-V, will represent "the apex of Cadillac performance and driver engagement." The company also remained mum on just what to expect in terms of capability, teasing only the fact that both the CT4-V and CT5-V Blackwing posted quicker lap times in testing at Virginia International Raceway earlier this year than their predecessors did.   Rumors have pointed to the CT5-V Blackwing making use of the company's supercharged 6.2-liter V8, which also powered its predecessor. The 6.2 shares its architecture with the company's flagship, naturally aspirated V8, making it an economical choice for powering performance cars. The smaller CT4-V is likely to be motivated by a turbocharged 6-cylinder. They will also be available in limited numbers, though Cadillac's announcement did not elaborate on just how many (or few, as the case may be) will eventually be built, or how many model years to expect. The CT6-V, which carries the 4.2-liter V8 that shares the "Blackwing" name, saw only limited production before being axed.  The V8 itself may find a new home down the road, but for the time being, it's toast.  Cadillac assured us that more information on the new CT4-V and CT5-V Blackwing will be come along soon enough. For now, at least we know what they're going to be called.  Related Video: