1987 Buick Regal Coupe / 1G4GJ1177HP446836 Chassis Information

1987 Buick Regal photograph

1987 Buick Regal photograph

1987 Buick Regal1987 Buick Regal
Coupe
Chassis #: 1G4GJ1177HP446836
Sold for $140,000 at 2015 Mecum : Monterey.
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 :
$150,000-$170,000 
Sale Price :
$140,000

2019 25
2018 25
2017 37
2016 27
2015 25
2014 35
2013 19
2012 15
2011 25
2010 29

Recent Sales

(Data based on Model Year 1987 sales)
1987 Buick Grand National
Sold for $37,400
  2019 Mecum : Dallas
 
1987 Buick GNX
Chassis#: 1G4GJ1170HP449612
Sold for $50,600
  2019 Mecum : Monterey
 
1987 BUICK GRAND NATIONAL
Chassis#: 1G4GJ1171HP443642
Sold for $19,800
  2019 Barrett-Jackson : Northeast
 
1987 BUICK GNX
Chassis#: 1G4GJ117XHP453358
Sold for $103,400
  2019 Barrett-Jackson : Northeast
 
1987 Buick Regal T-Type
Sold for $17,600
  2019 Mecum : Indianpolis
 
1987 Buick Regal T-Type
Sold for $24,750
  2019 Mecum : Indianpolis
 
1987 Buick Grand National
Sold for $48,400
  2019 Mecum : Indianpolis
 
1987 Buick Grand National
Sold for $30,800
  2019 Mecum : Indianpolis
 
1987 Buick Grand National
Sold for $24,200
  2019 Mecum : Indianpolis
 
1987 BUICK REGAL GRAND NATIONAL GNX
Chassis#: 1G4GJ1178HP451768
Sold for $77,000
  2019 Barrett-Jackson : Palm Beach
 
1987 Buick Grand National
Sold for $19,800
  2019 Mecum : Houston
 
1987 Buick Regal
Sold for $26,950
  2019 Mecum : Houston
 
1987 Buick GNX
Sold for $110,000
  2019 Mecum : Phoenix Auction
 
1987 Buick Grand National GNX Coupe
Sold for $93,500
  2019 Russo & Steele : Scottsdale
 
1987 BUICK REGAL LIMITED
Chassis#: 1G4GM1177HP446083
Sold for $42,350
  2019 Barrett-Jackson : Scottsdale, Az.
 
1987 BUICK GRAND NATIONAL
Chassis#: 1G4GJ1176HP454619
Sold for $30,800
  2019 Barrett-Jackson : Scottsdale, Az.
 
1987 BUICK GRAND NATIONAL
Chassis#: 1G4GJ117XHP457264
Sold for $66,000
  2019 Barrett-Jackson : Scottsdale, Az.
 
1987 BUICK GRAND NATIONAL GNX
Chassis#: 1G4GJ1173HP443660
Sold for $88,000
  2019 Barrett-Jackson : Scottsdale, Az.
 
1987 BUICK GRAND NATIONAL
Chassis#: 1G4GJ1178HP457991
Sold for $67,100
  2019 Barrett-Jackson : Scottsdale, Az.
 
1987 BUICK GRAND NATIONAL
Chassis#: 1G4GJ117XHP457992
Sold for $67,100
  2019 Barrett-Jackson : Scottsdale, Az.
 

Vehicles That Failed To Sell

1987 Buick Regal's that have appeared at auction but did not sell.
VehicleChassisEventHigh BidEst. LowEst. High
1987 Buick Grand National 2019 Fall Carlisle Auction   
1987 Buick Grand National 2019 Fall Carlisle Auction   
1987 Buick Regal T Type 2019 Fall Carlisle Auction   
1987 Buick Grand National 2019 Mecum : Indianpolis$37,000  
1987 Buick Grand National 2019 Mecum : Indianpolis$29,000  
1987 Buick Grand National 2019 Mecum : Phoenix Auction$35,000  
1987 BUICK GNX 2019 Leake OKC 2019$90,000  
1987 Buick Grand National 2019 Mecum : Kissimmee$19,000  
1987 Buick Grand National 2019 Mecum : Kissimmee$29,000  
1987 Buick Grand National 2019 Mecum : Kissimmee$28,000  
1987 Buick Grand National 2D 2018 Collector Car Toronto Fall Classic  $49,500
1987 Buick Grand National Resto Mod 2018 Mecum : Indianapolis$27,000  
1987 Buick Grand National 2018 Mecum : Indianapolis$30,000  
1987 Buick GNX 2018 Mecum : Indianapolis$72,000  
1987 Buick Grand National 2018 Mecum : Indianapolis   
1987 Buick Grand National 2018 Carlisle : Lakeland Winter Auction   
1987 Buick Grand National1G4GJ1174HP4636742018 Mecum : Los Angeles$24,000  
1987 BUICK GRAND NATIONAL1G4GJ1171HP4618032018 GpK Auctions Atlantic City$28,000  
1987 Buick Grand National 2018 Mecum : Kissimmee$32,000  
1987 Buick Grand National 2017 Mecum : Las Vegas$30,000  
1987 Buick Grand National Turbo 2017 GAA : November$33,000  
1987 Buick Grand National 2017 Carlisle Auctions : Fall Carlisle   
1987 Buick Grand National 2017 Mecum : Louisville$37,000  
1987 Buick Regal T-Type 2017 Auctions America : Auburn Fall $20,000$25,000
1987 Buick Grand National1G4GJ1177HP4592802017 Mecum : Monterey$90,000  
1987 Buick Grand National 2017 Mecum : Harrisburg$30,000  
1987 Buick Grand National 2017 Mecum : Portland$29,000  
1987 BUICK GRAND NATIONAL 2017 Leake Tulsa$31,500  
1987 Buick Grand National 2017 Auctions America : Fort Lauderdale $22,000$26,000
1987 Buick Grand National 2017 Mecum : Kansas City$14,000  

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Vehicle information, history, and specifications from concept to production.

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