1986 Buick Regal Grand National Coupe 2-door 3.8l on 2040-cars

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1969 Chevrolet Chevelle vs 1987 Buick GNX in Generation Gap showdown

Generation Gap generally tries to adhere to a theme for each episode, and for the final video from the Lingenfelter collection, the series might have its best idea yet - limited-production muscle cars from General Motors.
On one side you get a 1969 Chevrolet Chevelle COPO, and it's an absolute sleeper. Other than the SS wheels, this classic coupe looks practically bone stock, at least until the engine fires up. Under the hood is a 427-cubic-inch (7.0-liter) V8 making a claimed 425 horsepower and 460 pound-feet of torque. This was the sole year for the COPO package on the Chevelle, and Chevy only made about 323 of them.
The Chevelle's challenger is almost as rare and arguably just as cool. The 1987 Buick Grand National GNX looks just as mean today as when new. It eschews a traditional muscular V8 in favor of a 3.8-liter turbo V6 making a claimed 276 hp and 360 lb-ft, although that number is supposedly a bit underrated. Also, just 547 examples of the GNX version were ever built making it quite a collector's item too.

eBay Find of the Day: 1981 DeLorean with 570-hp twin-turbo Buick V6 [w/videos]

"Are you telling me that you built a time machine... out of a DeLorean?" So asked one Marty McFly of his mentor Dr. Emmett Brown, who replied: "The way I see it, if you're gonna build a time machine into a car, why not do it with some style?"
Doc Brown was right, of course: with an exotic mid-engine layout, gullwing doors and stainless steel body, the DeLorean DMC-12 sure looked the part. It just needed a little more juice. Well this one might not have 1.21 gigawatts of time-bending power - that'd be more than one and a half million horsepower - but it does have more than the 150 hp in the the standard 2.8-liter V6.
That's because this particular DeLorean has had its stock Peugeot Renault Volvo engine swapped out for a Buick-sourced, all-aluminum, 4.3-liter V6 from the Grand National. Dutteiller Performance didn't leave the engine in stock form, either: while they were swapping it out, they added a pair of turbochargers, new pistons, crank, cams and much, much more.

Movie Review: Black Air: The Buick Grand National Documentary

As Buick currently claws and scratches its way back into relevance to compete against luxury brands like Lexus and Acura, it's hard to believe that not too long ago, the brand had a car that was mentioned in the same breath as Corvette, Lamborghini and Ferrari. That car? None other than the Buick Grand National. All black with a turbocharged V6 and some of the quickest acceleration of its time, the Grand National, in today's standards, is along the lines of a 2013 Shelby GT500 with both cars essentially being a working man's supercar.
The last Grand National rolled off the assembly line in Flint, MI on December 11, 1987, and to mark the silver anniversary of that somber occasion, Black Air is a documentary of the Grand National from the perspective of the enthusiast, the collector, the media and even from those at General Motors responsible for creating such a sinister legend. Like the car itself, Andrew Filippone Jr. shoots the documentary in a raw fashion, and it definitely helps to show why a low-volume muscle car from the 1980s is still the object of obsession for many automotive enthusiasts to this day.