Readers ask: 1987 Buick Regal Grand National Gnx?

How much is a 1987 Buick Grand National GNX worth?

1987 Buick GNX could reach monetary digits not seen before. With four days still left on the Bring a Trailer auction, the GNX is already up to $100,000. The Grand National, particularly the GNX, is one of those cars that has skyrocketed in value in the past 10 years.

What is the difference between a 1987 Buick Grand National and a GNX?

Off the dyno the GNX engine is up 55 bhp from the standard Grand National’s rating to 300 at 4400, while torque climbs from 355 to 420 at 2400 rpm. Buick had already reached the limits of the Regal’s suspension with the Grand National, so the GNX is beefed up still more.

What is the difference between Grand National and GNX?

Buick GNX Specs – Interior Modifications

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The GNX has all the interior features of a fully loaded Grand National, except for T-tops or a sunroof/moonroof (to increase structural integrity), although some customers may have opted to have a sunroof or T-tops retrofitted.

How much horsepower does a 1987 Buick Grand National have?

The 3.8L V6 engine in the GNX was conservatively rated for 276 horsepower at 4,400 RPM and 360 lb-ft of torque at 3,000 RPM and backed by a prepared Turbo-HydraMatic 2004R transmission. The GNX could launch from 0-60 MPH in under five seconds and run a low 13-second quarter-mile.

What was the fastest American production car in 1987?

Back in 1987 the fastest U.S. production car ever to be produced was the Buick Grand National/GNX.

What is the rarest Buick Grand National?

With only 215 examples produced, the 1982 Grand National is the rarest of all Buick Regal Grand National models. 2) Also released in 1982 alongside the Buick Grand National package was the even rarer 1982 Buick LeSabre Grand National, with only 112 examples produced.

What year is the best Buick Grand National?

By 1987, the darling year for the Buick Grand National, the engine made 245 hp and 355 lb-ft of torque.

What does Buick GNX stand for?

GNX stands forGrand National Experimental” and only 547 were produced.

How do you know if a Grand National is real?

Compare the vin on the trunk rpo label to the actual vin. Last but not least their is a paint code tag below the vin on the firewall. If its 14 it was a factory black regal. It wont tell 100% if it’s a real GN but it will point out a clone since there was very few black TR’s.

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How fast was the Buick GNX?


0 – 100 kph 4.7 s
0 – 100 mph 12.9 s
Est. 1/8 mile 9.0 s @ 88.2 mph
1/4 mile 13.4 s
Top speed 200 kph (124 mph)

How much boost can a stock Grand National handle?

Limited by fuel

A stock 86-87 engine ran 13-14 pounds of boost with 93-94 octane available in the late 80’s. At stock boost and 91 octane, you’re limited to about that much boost. Put the fuel in that you wish to run, and monitor the knock retard with a scan tool. If it knocks, turn the boost down.

How much horsepower does a GNX have?

Schorr in his book, Buick GNX. With a new two-piece aluminum intake manifold that increased airflow by 10 percent, the engine was rated at 235 horsepower and 330 lb-ft of torque for ’86, then 245 horsepower and 355 lb-ft for ’87.

How much is a 1984 Grand National worth?

1984 Buick Grand National for sale on BaT Auctions – sold for $10,500 on January 10, 2019 (Lot #15,449) | Bring a Trailer.

How much is a Buick Grand National worth?

According to Hagerty, the highest value for a Grand National is $53,800. The website suggests that car enthusiasts can purchase one of these cars for $35,700 in excellent condition, $22,200 for one in good condition, and many fans can get one for $15,500.

Why did Buick stop making the Grand National?

From 1984-’86, Buick produced 9,614 Grand Nationals, and by 1987–the final year of production–demand was so high that Buick built 20,194 examples to satisfy its customers.

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