This 1987 Buick GNX was delivered new to Dorschel Buick in Rochester, New York, and is #51 of 547 produced for a single model year. The Grand National Experimental was created through a partnership between Buick and ASC/McLaren, and each example was finished in Black over gray cloth. Power is provided by a turbocharged 3.8-liter V6 mated to a four-speed automatic transmission, and additional equipment includes a limited-slip differential, an AM/FM/cassette radio, and 16″ cross-lace wheels. The car was acquired by the selling dealer on BaT in May 2022 and now shows 2,100 miles. This GNX was featured as the prize in a 2022 Omaze charity fundraising sweepstakes, although the winner chose a cash alternative instead of the car. It is now offered with artwork, owner’s manuals, accessories, spare parts, a window sticker, a clean Carfax report, and a clean New Jersey title.
Designed in partnership with ASC/McLaren, the Grand National Experimental featured unique cosmetic details such as heat-extracting vents, fender flares, a three-piece rear spoiler, and GNX badging. All 547 examples were finished in black, and the trunk lid on this example was repainted under prior ownership.
Black-finished 16″ cross-lace wheels feature polished lips and GNX-branded center caps, and the BFGoodrich g-Force Sport Comp-2 tires measure 245/50 front and 255/50 rear. The front suspension components were shared with the standard Grand National, while GNX-specific upgrades out back consisted of a Panhard rod and torque arm as well as an additional frame cross member.
The interior is upholstered in Black and Gray cloth with black carpeting, and the seats feature embroidered logos on the headrests. The WE2 Grand National package included air conditioning, and additional options consist of a power-adjustable driver’s seat, power windows and locks, a tilt steering column, and a GM-Delco Concert Sound AM/FM/cassette radio with a graphic equalizer and power antenna.
A plaque mounted to the passenger-side of the dashboard identifies this as GNX #51.
GNX-specific Stewart Warner instrumentation consists of a 160-mph speedometer, an 8k-rpm tachometer, and gauges for fuel level, coolant temperature, oil pressure, and boost pressure. The five-digit odometer shows 2,100 miles.
The 3.8-liter V6 was modified by McLaren Performance Technologies/ASC with a Garrett T3 turbocharger, a larger intercooler, and a low-restriction exhaust system, resulting in a factory-rated output of 276 horsepower and 360 lb-ft of torque.
Power is sent to the rear wheels through a four-speed automatic transmission equipped with a GNX-specification oil cooler and a limited-slip differential. Additional photos of the underside are provided in the gallery.
Manufacturer’s literature, a window sticker, and a GNX-branded watch and shirt are included in the sale.
