The 1987 Buick Grand National GNX is often considered the most iconic and powerful version of the Buick Grand National lineup. Produced in limited numbers, the GNX was a collaboration between Buick, ASC/McLaren, and McLaren Performance Technologies. Here are the specifications for the 1987 Buick Grand National GNX:
### Engine:
– **Type:** Turbocharged and intercooled 3.8-liter V6 engine
– **Horsepower:** Factory-rated at 276 horsepower (though believed to produce significantly more)
– **Torque:** Factory-rated at 360 lb-ft of torque
### Performance:
– **0-60 mph:** Approximately 4.7 seconds (some sources suggest even quicker)
– **Quarter-Mile Time:** Approximately 13.4 seconds at 104 mph
– **Top Speed:** Electronically limited to 124 mph
### Transmission:
– **Type:** 4-speed automatic transmission
– **Limited-Slip Differential:** Included for improved traction
### Chassis and Suspension:
– **Suspension:** Upgraded suspension components, including re-valved Bilstein shocks
– **Brakes:** Disc brakes on all four wheels
– **Wheels:** Lightweight 16-inch aluminum wheels with Goodyear Eagle VR50 tires
### Exterior:
– **Color:** All GNX models were finished in black
– **Aerodynamics:** Unique aerodynamic enhancements, including a front air dam and rear spoiler
### Interior:
– **Seats:** Leather-appointed Recaro bucket seats with embroidered GNX logos
– **Instrumentation:** Full array of analog gauges, including boost gauge
– **Features:** Power windows, power locks, air conditioning, cruise control, AM/FM stereo cassette player
### Production and Rarity:
– **Production Numbers:** Only 547 units were produced for the 1987 model year
– **GNX Number Plate:** Each GNX was individually numbered with a dash-mounted plaque indicating its unique production number
### Legacy:
– **Performance Legacy:** The 1987 Buick Grand National GNX is widely regarded as one of the fastest American production cars of its time.
– **Cultural Impact:** The GNX has become a highly sought-after collector’s car and a symbol of 1980s automotive performance.
### Note:
– Additional modifications may have been made to individual GNX models over the years, so actual performance figures may vary from stock specifications.
