1987 Buick Grand National



All good things come to an end, and Buick decided to go out with a bang for its final Grand National.

All good things come to an end, and Buick decided to go out with a bang for its final Grand National. New for 1987 was the GNX produced by McLaren Performance Technologies/ASC. It was created as "the Grand National to end all Grand Nationals." Given a conservative rating of 276hp (most experts agree that number is more like 300hp) and 360 lb-ft of torque, the GNX would be the fastest Grand National ever.

The GNX received a new intercooler, a new Garrett turbo with lightweight ceramic impeller. It also received a revised rear suspension, bigger wheels, a new Stewart-Warner instrument cluster, and some minor trim changes including louvers in the front fenders.

The new car was extremely fast. 4.7 sec 0-60 and 13.5 sec @ 102 mph in the quarter-mile. It was fearful of nothing on the street except the most exotic or heavily modified cars. The entry price for speed was steep with the GNX being almost twice as much as the Grand National. As you'll see in the Kenne Bell brochure, Grand National owners could buy performance additions for less than the GNX and surpass its performance. Sales of the GNX were limited to 547 cars. Production for the Grand National lasted 5 months longer than planned due to increased demand.

The Grand National would not be overshadowed by its faster counterpart. It too received some upgrades and now boasted 245hp and 355 lb-ft of torque. Visually, Buick freshened up the grille and made a few minor changes to the interior.

Production Numbers

Grand National 20,193
GNX 547
Total Production 20,740

Performance Specs

Engine Size HP Torque 0 to 60 Quarter mile
Turbocharged Intercooled
3.8L V6
231ci 235 at 4000 rpm 330 lb-ft at 2400 6.1 sec 13.9 sec at 100 mph
GNX 3.8L V6 231ci 276 at 4000 rpm 360 lb-ft at 3000 5.5 sec 13.4 sec at 103 mph


  • Turbo Hydra-Matic 4-Speed Auto

Paint & Colors





OEM Brochures

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The Motorious Knowledge Base provides a comprehensive vehicle overview for the 1987 Buick Grand National including production numbers, performance specs, factory colors, and OEM brochures. Check out additional model years or related content linked to this article or view other Makes and Models in our Research center.

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