The turbocharged Buick Regal Grand National in its gloss black livery was built from 1984 to 1987. Prior to 1984, the Grand National was just an appearance package, with little in the way of performance aspirations. The platform was coming to the end of its life cycle in 1987, and Buick wanted to send it out with a bang. Partnering with ASC/McLaren, Buick built the monster of all Grand Nationals in the 1987 Buick GNX.
You need an attentive eye to tell a Buick GNX from a garden variety Grand National. The GNX came with composite fender flares and front fender vents that allowed hot air to escape the engine compartment. Sixteen-inch basket-weave black wheels with polished lips were another styling cue, along with GNX badges in the grille, wheel center caps, and on the trunk lid. Inside, Stewart Warner analog gauges were used for oil pressure, coolant temp, and boost level, along with a dash number plaque indicating which of the limited run of 547 GNXs your car was.
Under the hood, the Buick GNX had freer flowing heads, improved engine management, an upgraded turbo, and less restrictive exhaust than its Grand National stablemate. The Buick GNX also benefitted from a transmission oil cooler, stiffer body, improved rear suspension design, stiffer springs and stabilizer bars. Output was grossly underrated at 276 horsepower and 360 pound-feet of torque, as was evidenced by a smoking 4.6-second zero-to-60 mile per hour time, and a low 13-second quarter mile time. The straight-line performance of the GNX was good enough to embarrass that year’s Chevy Corvette.
Our feature 1987 Buick GNX is #284 of the 547 built. It has covered just 766 miles from new. It retains its original gloss black paint over two-tone black and gray cloth interior. It is equipped with the original turbocharged 3.8-liter V6, Turbo Hydramatic 200-4R four-speed automatic transmission, limited-slip differential, air conditioning, cruise control, power driver seat, power windows, power locks, and Delco AM/FM/Cassette stereo.
This remarkably low-mileage Buick GNX is now for sale on Bring a Trailer. The auction will conclude Tuesday, December 12th, with the current bid at $185,000.