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1987 Buick Regal Coupe

  • Chassis Number: 1G4GJ1177HP446836
The Buick Grand National Experimental or GNX was a limited-edition, specially prepared vehicle that was identifiable as future collectibles when they were new. By 1987, the turbocharged 231 CID V-6 engine offered over 245 horsepower, while a stock 305 CID V8 in an automatic-equipped Camaro developed just 190 horsepower.

A total of just 547 cars were built by Buick with a Grand National interior and then sent to American Specialty Cars (ASC) McLaren Performance Technologies for the GNX transformation. Improvements to the cars included a Garrett T3 turbocharger with ceramic impeller and GNX heat shield, larger capacity intercooler, reprogrammed engine management and performance suspension with torque bar and GNX-only rear differential cover. The 3.8-liter V6 engine in the GNX was conservatively rated at 276 horsepower and 360 lb-ft of torque and backed by a prepared Turbo Hydra-Matic 2004R transmission.

The Buick GNX could race from zero-to-sixty MPH in under five seconds and could run the quarter-mile in the low 13-seconds. Exterior features included vented fenders, a distinct lack of hood and fender emblems, and 16-inch aluminum mesh wheels with black-out face and GNX center caps, which are equipped with Goodyear Eagle Gatorback tires.

This particular GNX is an unrestored example and number 155 of the 547 produced. The odometer shows just 12 miles.

This car has the GNX-badged front carpet savers, six-way power adjustable driver seat, and the ASC McLaren GNX window sticker.

By Daniel Vaughan | Feb 2016

2015 Mecum : Monterey

Pre-Auction Estimates :
USD $150,000-USD $170,000 
Sale Price :
USD $140,000

1987 Buick Regal Auction Sales

Recent Sales of the Buick Regal

(Data based on Model Year 1987 sales)
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#: 1G4GJ1172HP461390
Sold for USD$66,000
  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#: 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 Regal T-Type
Chassis#: 1g4gj117xhp424877
Sold for USD$35,200
  2024 Mecum : Kissimmee
 
1987 Buick Grand National
Chassis#: 1g4gj1178hp456470
Sold for USD$51,700
  2024 Mecum : Kissimmee
 
1987 Buick Regal Turbo-T
Chassis#: 1g4gj1179hp429424
Sold for USD$29,700
  2024 Mecum : Kissimmee
 
1987 Buick Grand National
Chassis#: 1g4gj1179hp464058
Sold for USD$35,200
  2023 Mecum : Dallas
 
1987 Buick Grand National
Chassis#: 1g4gj1170hp439775
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 Grand National
Chassis#: 1g4gj1177hp439644
Sold for USD$52,800
  2023 Mecum : Indy
 
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
 
1987 BUICK GRAND NATIONAL
Chassis#: 1G4GJ1171HP462529
Sold for USD$45,100
  2023 Barrett-Jackson : Palm Beach
 
1987 BUICK GNX
Chassis#: 1G4GJ1173HP448793
Sold for USD$113,300
  2023 Barrett-Jackson : Palm Beach
 

Buick Regals That Failed To Sell At Auction

1987 Buick Regal's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1987 Buick Regal T-Type1g4gj1179hp4366812024 Mecum : Glendale$23,000  
1987 Buick GNX1g4gj1179hp4461572024 Mecum : Glendale$165,000  
1987 Buick Grand National1g4gj117xhp4404952024 Mecum : Kissimmee$32,000  
1987 Buick Grand National1g4gj1177hp4553432024 Mecum : Kissimmee$35,000  
1987 Buick Grand National1g4gj117xhp4404952023 Mecum : Harrisburg$25,000  
1987 Buick Grand National1g4gj1177hp4153302023 Mecum : Harrisburg$45,000  
1987 Buick Grand National 2023 Mecum : Indy$90,000$120,000$140,000
1987 Buick Grand National1g4gj1172hp4596552023 Mecum : Indy$40,000  
1987 Buick Grand National1g4gj1176hp4567912023 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 GNX1G4GJ1178HP4478032022 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  
1987 Buick Grand National GS 2019 Greensboro Auto Auction : March 2019$26,000  

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1987 Buick Regal

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