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Experimental mid-engine XP-819 Corvette going up for auction

It seems to be commonplace that when a new Corvette is in development, rumors swirl about a possible mid-engine layout. As is the case of Chevy's most recent C7 Corvette, these rumors never pan out.
In any case, the idea for a 'Vette with an engine mounted behind the driver can probably all be traced back to a single car, the 1964 XP-819 prototype. Built as an "engineering exercise" back in 1964, the prototype was designed with a rear-mounted engine. History tells us that the idea of a rear-engine Corvette fizzled, and the XP-819 was eventually cut up into pieces and stored at a shop in Daytona Beach, FL.
After sitting for untold years, a restoration project started on the car, and while it isn't yet fully completed, the current owner of the car, Mid America Motorworks, will have the car on display at the 2013 Amelia Island Concours d'Elegance as a "driveable chassis" with hopes of having a fully completed car ready to bring to next year's show.

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:    

Chevy Tahoe-to-K5 Blazer conversion shop renders Jimmy option

Back in 2019 we told you about a truck that looked like a K5 Chevy Blazer, but was actually a modern late-model Tahoe underneath. It was the product of Arkansas shop Flat Out Autos, which reskinned modern GM full-size SUVs to look like their predecessors. Now, the same shop is planning to release a GMC version, converting Yukons to Jimmys. We were impressed by Flat Out's workmanship, beautifully blending the lines of the Blazer into those of the Tahoe. The result was a cohesive design, not just a panel swap. It clearly required a lot of work, which helped justify the $69,000 price tag, not including the cost of the donor Tahoe. FlatOut Autos GMC Blazer Tahoe reskin 01 View 11 Photos At least one new owner was so impressed that they recently purchased four identical Blazer conversions at once. The quadruplets were all finished in blue with a white roof and all based on brand-new 2020 Tahoes. Obviously, with such demand it was only natural for Flat Out to explore other options. On Facebook the company said it was working on a 1972 version with an eggcrate grille. Now, they've also released a rendering paying homage to the K5 GMC Jimmy. The Jimmy conversion uses the original's quad-headlight face, crosshair grille and GMC badging. Like the Blazer conversion, it adds chrome bumpers and milled door handles while adapting the original's 2-door design to the new truck's 4-door body. The rendering only shows the front three-quarter view, but presumably a new carbon fiber rear door would have to be created as the Blazer's says "Chevrolet" across the back. Flat Out says that all the modern conveniences found on the donor Tahoe will work on the conversion, including parking, blind spot and lane keeping sensors. If you have the coin, it's a great way to have retro style without giving up modern safety and performance. The new Blazer has been disappointing to many fans that had hoped for a Bronco-like SUV. Instead, GM gave us a crossover. The Flat Out conversions might be a good compromise, and expanding it to the GMC brand only makes sense. Obviously there's no requirement to use a GMC Yukon as the donor vehicle for the Jimmy, as it's functionally identical to a Tahoe, but wouldn't you want to keep it in the family? Related Video: