1000HP Buick Grand National Doing Hard Launches: Legendary Muscle

Buick Grand National is a car that has been gaining popularity in the racing scene lately, and for good reason. In this article, we’ll take a look at a 1987 Buick Grand National that has been modified to produce an astounding 1000 WHP. We’ll examine the car’s modifications, its performance on the track, and why this particular Buick Grand National is turning heads.

The Drivetrain

The car’s drivetrain is a 4.1 aftermarket block with a Stage 2 block off center. This engine produces an impressive 1000 WHP, which is a significant increase from the factory horsepower. The engine’s cubic inch is 273, and with the modifications, the car can produce a massive amount of boost.

The Engine

The engine in the Buick Grand National is a turbocharged 3.8-liter V6 that has been heavily modified to produce an astonishing 1,000 horsepower. This engine features forged internals, upgraded fuel injectors, a custom camshaft, and a high-flowing intake and exhaust system. The engine is also tuned to run on E85 fuel, which allows for even more power output.

The Turbocharger

The turbocharger used in this Grand National is a Precision 88mm unit, which is one of the largest turbochargers available for this engine. This turbocharger is capable of producing boost pressures of up to 30 psi, which helps to generate the massive power output of the car.

The Transmission

The Buick Grand National features a custom-built TH400 automatic transmission that has been reinforced to handle the immense power of the engine. The transmission also features a high-stall torque converter and a transbrake, which allows for more consistent and quicker launches on the track.

Suspension and Brakes

To handle the immense power and speed of the car, the suspension and brakes have been upgraded significantly. The car features adjustable coilover shocks, upgraded sway bars, and custom control arms to improve handling and traction. The brakes have also been upgraded to Wilwood six-piston calipers in the front and four-piston calipers in the rear, which provide excellent stopping power.

Performance on the Track

The performance of this Buick Grand National on the track is simply breathtaking. With 1,000 horsepower on tap and a heavily modified chassis, the car can launch from 0 to 60 mph in just 2.4 seconds and can complete a quarter-mile run in just 8.4 seconds at 165 mph. These performance figures are truly impressive and make this Grand National one of the fastest cars on the track.


The interior of the car has been kept mostly stock, with the exception of a few aftermarket gauges and a roll cage for safety. The stock seats have been replaced with racing seats and harnesses, which provide better support and safety for the driver and passenger.


The exterior of the Buick Grand National is mostly stock, with the exception of a few custom touches such as the blacked-out grille and aftermarket wheels. The car has a menacing appearance on the road and turns heads wherever it goes.


Overall, the Buick Grand National is an iconic American muscle car that has been heavily modified to produce an incredible 1,000 horsepower. With its turbocharged V6 engine, custom transmission, upgraded suspension and brakes, and stunning performance on the track, this car is truly a masterpiece of engineering and automotive performance.

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