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The GNX happened because then-chief engineer Dave Sharpe, Buick Advanced Concepts manager Mike Doble and project engineer Chuck Jensen set out to build 'a Grand National to top all Grand Nationals to celebrate the end of its run.'
Buick teamed with ASC/McLaren to avoid disrupting normal engineering and production and worked hard to make it not just faster but substantially better than the 1987 GN on which it was based.
Improved engine controls, freer-flowing heads, low-restriction exhaust and upgrades to the Garrett AiResearch turbocharger - including a lightweight, faster-responding ceramic turbine wheel - boosted output to a muscular 276 horsepower and 360 lb.-ft of torque. The body was stiffened, the rear suspension redesigned and the wheels and tires upsized to 245/50VR16 front and 255/50VR16 rear on special 16-inch alloy wheels to handle that torque and improve stability.
Also added were a transmission oil cooler, composite fender flares and Stewart Warner gauges in a modified cluster. Functional front fender louvers helped lower under-hood temperatures, the all-black exterior was set off by bold GNX badges on the grille, decklid and wheel centers, and each GNX got its own built-date number on the passenger-side dash.
There were only 547 examples of the McLaren-modified GNX models ever built, and these were one of the fastest production cars built in the 1980s. A larger turbo, intercooler and external body/wheel modifications separated it from the Regal GN models. The Buick Regal GNX could easily reach 13-second quarter-mile times and driving home on the highway with the air conditioning on while maintaining 23 mpg.
Some dealers who got one of 547 GNXs built chose to keep it, while others charged as much as $20,000 over its $29,290 sticker price. One reportedly sold for $75,000.
Buick teamed with ASC/McLaren to avoid disrupting normal engineering and production and worked hard to make it not just faster but substantially better than the 1987 GN on which it was based.
Improved engine controls, freer-flowing heads, low-restriction exhaust and upgrades to the Garrett AiResearch turbocharger - including a lightweight, faster-responding ceramic turbine wheel - boosted output to a muscular 276 horsepower and 360 lb.-ft of torque. The body was stiffened, the rear suspension redesigned and the wheels and tires upsized to 245/50VR16 front and 255/50VR16 rear on special 16-inch alloy wheels to handle that torque and improve stability.
Also added were a transmission oil cooler, composite fender flares and Stewart Warner gauges in a modified cluster. Functional front fender louvers helped lower under-hood temperatures, the all-black exterior was set off by bold GNX badges on the grille, decklid and wheel centers, and each GNX got its own built-date number on the passenger-side dash.
There were only 547 examples of the McLaren-modified GNX models ever built, and these were one of the fastest production cars built in the 1980s. A larger turbo, intercooler and external body/wheel modifications separated it from the Regal GN models. The Buick Regal GNX could easily reach 13-second quarter-mile times and driving home on the highway with the air conditioning on while maintaining 23 mpg.
Some dealers who got one of 547 GNXs built chose to keep it, while others charged as much as $20,000 over its $29,290 sticker price. One reportedly sold for $75,000.
No auction information available for this vehicle at this time.
1987 Buick Regal Auction Sales
Recent Sales of the Buick Regal
(Data based on Model Year 1987 sales)
1987 BUICK GNX Chassis#: 1G4GJ1174HP451735 Sold for USD$156,200 2024 Barrett-Jackson : Palm Beach | |
1987 BUICK GNX RE-CREATION Chassis#: 1G4GJ117XHP438262 Sold for USD$44,000 2024 Barrett-Jackson : Palm Beach | |
1987 Buick Grand National Chassis#: 1g4gj1170hp464546 Sold for USD$34,100 2024 Mecum : Houston | |
1987 Buick Grand National Chassis#: 1g4gj1175hp438895 Sold for USD$88,000 2024 Mecum : Glendale | |
1987 Buick Grand National Chassis#: 1g4gj117xhp440495 Sold for USD$35,200 2024 Mecum : Glendale | |
1987 Buick Regal Chassis#: 1g4gj11h1hp438028 Sold for USD$20,900 2024 Mecum : Glendale | |
1987 BUICK GRAND NATIONAL Chassis#: 1G4GJ1174HP433140 Sold for USD$69,300 2024 Barrett-Jackson : Scottsdale AZ | |
1987 BUICK GRAND NATIONAL GNX Chassis#: 1G4GJ1170HP449920 Sold for USD$231,000 2024 Barrett-Jackson : Scottsdale AZ | |
1987 BUICK GRAND NATIONAL Chassis#: 1G4GJ1173HP452312 Sold for USD$51,700 2024 Barrett-Jackson : Scottsdale AZ | |
1987 BUICK GRAND NATIONAL Chassis#: 1G4GJ1172HP461390 Sold for USD$66,000 2024 Barrett-Jackson : Scottsdale AZ | |
1987 Buick Grand National Chassis#: 1g4gj1178hp456470 Sold for USD$51,700 2024 Mecum : Kissimmee | |
1987 Buick Regal T-Type Chassis#: 1g4gj117xhp424877 Sold for USD$35,200 2024 Mecum : Kissimmee | |
1987 Buick Regal Turbo-T Chassis#: 1g4gj1179hp429424 Sold for USD$29,700 2024 Mecum : Kissimmee | |
1987 Buick Grand National Chassis#: 1g4gj1170hp439775 Sold for USD$35,200 2023 Mecum : Dallas | |
1987 Buick Grand National Chassis#: 1g4gj1179hp464058 Sold for USD$35,200 2023 Mecum : Dallas | |
1987 Buick Grand National Chassis#: 1g4gj1172hp459655 Sold for USD$43,450 2023 Mecum : Kissimmee Summer Special 2023 | |
1987 Buick Regal Turbo-T Chassis#: 1g4gj1172hp431063 Sold for USD$30,800 2023 Mecum : Kissimmee Summer Special 2023 | |
1987 BUICK GRAND NATIONAL CUSTOM COUPE Chassis#: 1G4GJ1173HP450320 Sold for USD$39,600 2023 Barrett-Jackson : Las Vegas | |
1987 Buick GNX Chassis#: 1g4gj1170hp449626 Sold for USD$121,000 2023 Mecum : Indy | |
1987 Buick Grand National Chassis#: 1g4gj1171hp459243 Sold for USD$39,600 2023 Mecum : Indy |
Buick Regals That Failed To Sell At Auction
1987 Buick Regal's that have appeared at auction but did not sell.
Vehicle | Chassis | Event | High Bid | Est. Low | Est. High |
---|---|---|---|---|---|
1987 Buick Grand National | 1g4gj1170hp449884 | 2024 Mecum : Houston | $47,000 | ||
1987 Buick Regal T-Type | 1g4gj1179hp436681 | 2024 Mecum : Glendale | $23,000 | ||
1987 Buick GNX | 1g4gj1179hp446157 | 2024 Mecum : Glendale | $165,000 | ||
1987 Buick Grand National | 1g4gj117xhp440495 | 2024 Mecum : Kissimmee | $32,000 | ||
1987 Buick Grand National | 1g4gj1177hp455343 | 2024 Mecum : Kissimmee | $35,000 | ||
1987 Buick Grand National | 1g4gj117xhp440495 | 2023 Mecum : Harrisburg | $25,000 | ||
1987 Buick Grand National | 1g4gj1177hp415330 | 2023 Mecum : Harrisburg | $45,000 | ||
1987 Buick Grand National | 2023 Mecum : Indy | $90,000 | $120,000 | $140,000 | |
1987 Buick Grand National | 1g4gj1172hp459655 | 2023 Mecum : Indy | $40,000 | ||
1987 Buick Grand National | 1g4gj1176hp456791 | 2023 Mecum : Indy | $75,000 | $90,000 | $110,000 |
1987 Buick Grand National | 2023 Mecum : Glendale | $38,000 | |||
1987 Buick Grand National | 2023 Mecum : Kissimmee | $55,000 | |||
1987 Buick Grand National | 2022 Mecum : Las Vegas | $34,000 | |||
1987 Buick Grand National | 2022 Mecum : Chattanooga | $65,000 | |||
1987 Buick Regal | 2022 Mecum : Harrisburg | $20,000 | |||
1987 Buick Regal T Type | 2022 Mecum : Harrisburg | $30,000 | |||
1987 BUICK GNX | 1G4GJ1178HP447803 | 2022 BarrettJackson : Scottsdale, Arizona | |||
1987 Buick Grand National | 2022 Mecum : Kissimmee | $85,000 | |||
1987 Buick Grand National | 2021 Mecum : Chicago | $65,000 | |||
1987 Buick Grand National | 2021 Mecum : Chicago | $27,000 | |||
1987 Buick Grand National | 2021 Mecum : Houston 2021 | $26,000 | |||
1987 Buick GNX | 2020 Mecum : Glendale | $85,000 | |||
1987 Buick Grand National | 2020 Mecum Auctions : Kissimmee | $40,000 | |||
1987 Buick Regal T Type | 2019 Fall Carlisle Auction | ||||
1987 Buick Grand National | 2019 Fall Carlisle Auction | ||||
1987 Buick Grand National | 2019 Fall Carlisle Auction | ||||
1987 Buick Grand National | 2019 Mecum : Indianpolis | $29,000 | |||
1987 Buick Grand National | 2019 Mecum : Indianpolis | $37,000 | |||
1987 Buick Grand National | 2019 Mecum : Phoenix Auction | $20,000 | |||
1987 Buick Grand National | 2019 Mecum : Phoenix Auction | $35,000 |
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1987 Buick Regal
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