Buick Grand National Gnx Specs

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.

How fast is a Buick GNX?

It ran to 60 mph in 4.9 seconds and clicked through the quarter-mile in 13.9 seconds at 98 mph. The GNX, with 55 more horses and an additional 25 pounds of mass, rockets to 60 in 4.7 seconds and squirts through the quarter-mile in 13.5 seconds at 102 mph.

Was the Buick GNX the fastest production car?

The Buick GNX quickly gained the ranking of the fastest production car available in 1987. It had the ability and power to achieve 60 miles per hour in 4.7 seconds. The GNX shocked many people when it left the competition, like the Corvette, Ferrari, and Lamborghini Countach in the dust.

Was the Grand National Twin Turbo?

For another edition of “Impromptu Street Races,” this black Buick Regal Grand National comes equipped with a twin turbocharged LSX. That means it’s always ready to hit absurd speeds. Here’s a video showing this piece of American muscle displaying its incredible power.

How much horsepower does a Buick 455 have?

The standard 455 wielded 350 horsepower and the performance Stage 1 version developed 370, although testing on many Buick 455s put the horsepower rating closer to 425. However, what made the 455 special was its torque rating of 510 foot-pounds, more than any other engine on the road in 1970.

Are all Buick Grand Nationals black?

They pride themselves on the shallow knowledge they have, asserting themselves in their diehard belief that Buick Grand Nationals were produced in only a single color–black–and only during the 1984 through 1987 model years. They are wrong.

What was the horsepower of a 1987 Buick GNX?

The GNX’s 3.8-liter V-6 developed 276 horsepower at 4400 rpm, and 360 pound-feet of torque at just 2400 rpm, courtesy of an uprated Garrett ceramic vane turbocharger and recalibrated engine-management system.

Is a Grand National a muscle car?

Instead of a commemorative special option, it was now a muscle car with one of the hottest six-cylinders on the market. The Grand National of 1984 was already a serious contender as it debuted, with a quarter-mile time only a few tenths of a second off of the newly-introduced C4 Corvette.

What is the fastest car Buick makes?

Buick has announced that the Regal GS is the fastest Buick ever. It hit 162 mph at the Nevada Open Road Challenge, good enough for a second-place finish in the 135-mph class.

What engine is in the Buick GNX?

The GNX featured modifications of the turbo-charged and intercooled 3.8-liter V6 engine used in the Grand National, as well as special wheels and tires, suspension and exhaust system modifications, analog instrument cluster and functional body modifications. The GNX was the quickest American car you could buy in 1987.

How fast was a stock Grand National?

With the deeper-breathing turbo and intercooler, the 1986 Regal Grand National had a 0-60 time of 4.8 seconds, a full second faster than the same year Corvette, and could run the quarter mile in 13.7-seconds.

What was the first car to go 200 mph?

The 1969 Dodge Challenger Daytona produced a record-breaking 200 plus miles per hour speed. Back when this vehicle produced this important mark, becoming the first Dodge vehicle to do so, the world was vastly different than the world in 2021.

What Buick has the most horsepower?

Under the hood of the ridiculously powerful 1987 Buick Grand National is a V6 that has been modified to use the full potential of a big turbo. The heads have been swapped out for TA heads and the rest of the modifications total up to an incredible 1000 horsepower at the crank and 900 wheel horsepower.

What is the rarest Buick Grand National?

Secondly, the Buick GNX is a rare car. Production was originally limited to 500 examples but later increased to 547. Plus, it’s a one-year-only model that’s demonstrably improved over the already fast Grand National.

Why did Buick stop making the Grand National?

The G-body ’80s-era muscle car had its run and GM decided to retire the platform altogether. First introduced as a trim option on the Buick Regal in 1982 and then as a standalone model between 1984 and 1987, the Grand National was a powerhouse in its own right.

How many GNX are left?

It certainly helps that only 547 GNXs exist. The current bid sits at $101,000 with three days left, and it will likely go higher before the virtual hammer drops for this time capsule of American performance.

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