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This is the dark horse of the '80s—1987 Buick GNX! Built to smoke Ferraris in total silence—no flashy chrome, just a raw turbocharged menace.
Overview
SBX Cars is proud to offer for sale this 1987 Buick GNX showing just 2,914 mi (4,690 km) on the odometer at the time of cataloging. Finished in Black over a Black and Sand Gray cloth cabin, this sinister icon of American muscle has been kept in factory-original condition and is primed to dial up the excitement of any serious collection.
Language like “the GNX is an axe-wielding barbarian laying waste to everything in its path”, courtesy of a period Car and Driver GNX test, hints at how wicked this Buick is. Produced for just a single year, as a swan song to the rear-drive Regal and Grand National series, Buick only ever built 547 examples of the GNX, and today’s stunner presents as a spectacular late ‘80s time capsule.
It was a time when the Porsche 911 Turbo went from 0-60 in 4.6 seconds, a split the GNX was behind by just one-tenth of a second. Developed in collaboration with ASC and McLaren Performance Technologies, the GNX was a limited-edition skunkworks coupe that took the already impressive Grand National and turned it into a fire-breathing final word on the era of hardcore rear-drive American muscle.
Upgrades ranged from freer-flowing heads and increased boost pressure from the Garrett turbo to a stiffened body and reworked rear suspension. The results speak for themselves and today’s example offers a rare opportunity to get your hands on one.
Specifications & Options
Exterior
- Black finish
- Black 16” crosslace wheels with polished barrels
- BFGoodrich g-Force Super Sport tires measuring 245/50 with 2012 date codes
- GNX badging
- Composite wheel arch flares
- Front fender vents
- Automatic power antenna
- Rear spoiler
- Dual exhaust outlets
Interior
- Black and Sand Gray cloth upholstery
- Turbo 6 embroidered seat headrests
- 6-way power-adjustable driver’s seat
- Leather-wrapped 3-spoke steering wheel
- GNX-specific analog Stewart-Warner gauge set:
- 160-mph speedometer
- 8,000-rpm tachometer
- Boost pressure
- Oil pressure
- Coolant temperature
- Fuel level
- Serialized GNX 183 dash plaque
- Delco Concert Sound System with graphic equalizer and cassette deck
- Power windows and door locks
- Cruise control
- Air conditioning
Mechanical
- 3.8L turbocharged and intercooled V6
- Factory rated for 276 horsepower at 4,400 rpm and 360 lb-ft of torque at 2,400 rpm
- Limited-slip differential
- 4-speed automatic transmission with GNX-branded aluminum rear cover
- Power steering
- Power front disc brakes
- Rear drum brakes
Service History
The seller has provided the following ownership and service history of this 1987 Buick GNX:
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It was purchased from Porter Chevrolet in Newark, Delaware, in April 2000 with 40 miles on the odometer. The owners had it shipped to their home in Pennsylvania and serviced it at 1,545 miles in November 2002 at Barrel Auto Repair in Abington, Pennsylvania. All receipts can be seen in the gallery.
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These owners also had the car serviced at 1,979 miles in August 2006 at Bear Auto in Nescopeck, Pennsylvania and again at 2,152 miles in August 2007 at the same facility. Records of these services can be seen on the CARFAX report.
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The next owner purchased the car at 2,277 miles in June 2009 and relocated it to Texas. Mileage can be seen on the Pennsylvania title in the gallery.
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Per the seller, although a notarized actual mileage Pennsylvania title was provided, Texas issued a mileage exempt title.
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The next owner, a dealer, purchased the car, relocated it to North Carolina, and had it serviced at 2,432 miles in January 2013 at Hendrick Cary Auto Mall in Cary, North Carolina.
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The next owner purchased the car in 2013 and kept it in North Carolina. Service was performed by Randy Marion Buick of North Carolina in June 2017 at 2,865 miles and in December 2020 at 2,899 miles. Receipts for this work can be seen in the gallery.
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This owner acquired a North Carolina title, with the correct mileage, for the car in September 2021 at 2,908 miles.
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The current owner purchased the car in February 2024 at 2,908 miles and it now has 2,914 miles.
Condition & Reports
A clean CARFAX report and comprehensive undercarriage images of this 1987 Buick GNX can be seen in the gallery. Cracks on the top of the front bumper, beneath the driver-side headlight, are also detailed in the gallery.
Included in the Sale
- Original window sticker showing $29,389 sale price and delivery to C. Woods Buick-Opel in Mechanicsburg, Pennsylvania
- ASC McLaren build documentation
- Factory literature and correspondence
- Service records
Summary
Buick’s objective with the GNX was to build a Grand National to end all Grand Nationals. To do so, the ultra-low-volume coupe turned the wick up on its boosted powertrain to the point that all 360 lb-ft of twist were on tap at just 2,400 rpm.
The transmission was beefed up, the front fenders became functional engine bay vents, the exhaust was opened up, and in the end, Buick had created the baddest Grand National in history. Of course, the fact that the GNX was only sold in black didn’t hurt.
An icon of America’s muscle car glory days, the GNX was a prized collector’s model the minute it rolled off the line. That status has carried forward almost 40 years later as these Buicks remain a hot commodity. Today’s low-mileage, carefully preserved example is one that you do not want to miss.
As part of the consignment process, SBX Cars requests a range of information from the seller pertaining to the subject of their offering. The auction listing description therefore is, to the best of the seller’s knowledge, accurate and not misleading. However, it is the responsibility of a potential buyer to satisfy themself as to the accuracy of the auction listing description. This includes conducting an in-person inspection, which may be arranged between the buyer and seller, as well as verifying the condition, authenticity, value, and title before committing to bid or buy. Please see our Terms of Service for full details.
Buyer's Premium
The Buyer’s Premium will be added to the final sale price and is payable directly to SBX Cars. Sales tax applicability will be determined by buyer's location.
- Buyer's premium: 5%
Bid History
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1987BuickGNX - #183 with 2,900 original mi
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