The 1987 Buick Grand National represents the powerful zenith of the G-body platform and the final chapter for the legendary turbocharged V6. It was a potent machine from the factory, but its design invited tuners to explore its full potential. This Modified 1987 Buick Grand National takes that potential and transforms it into a dedicated performance vehicle. It boasts an extensive list of internal and external upgrades, ensuring it remains highly competitive and exciting. It stands as a testament to the raw power lurking within the legendary 3.8-liter engine.
The Signature Black Exterior
The Grand National’s appeal is inextricably linked to its menacing, all-black paint scheme. This example was refinished under current ownership, enhancing its already formidable presence. The exterior maintains the classic G-body lines while integrating lightweight, functional fiberglass components. This includes both the front and rear bumper covers.
A fiberglass hood replaces the factory unit, contributing to overall weight reduction. Exterior details include sport mirrors and the distinctive decklid spoiler. A Kenne Bell front lip spoiler has been added, featuring an integrated duct specifically for the cold-air intake system. This small modification directly supports the engine’s breathing needs.
Chassis Readiness and Braking
Handling and braking are focused on maximizing straight-line performance and control. The car is equipped with a line lock kit, which is essential for pre-staging burnouts at the drag strip. This feature allows the driver to lock the front brakes while releasing the rear brakes. The car rides on factory-style 15-inch alloy wheels. These are mounted with Hankook Kinergy ST tires.
Braking is managed by power-assisted front discs, paired with rear drums. While retaining the factory brake type, the focus is clearly on acceleration and specialized use. This build prioritizes straight-line driving and track performance over autocross capability. The overall setup reflects its intended purpose as a quarter-mile weapon.
Interior Upgrades and Driver Focus
The cabin maintains its iconic look with front bucket seats and a rear bench upholstered in Black and Sand Gray cloth. The Turbo 6 embroidery on the front headrests confirms the car’s identity. Replacement carpets and door panels contribute to a fresh, clean appearance. The air conditioning system has been disabled, another modification often seen in pure performance builds.
The driver is presented with a host of aftermarket instrumentation crucial for monitoring the turbocharged V6. The three-spoke, leather-wrapped steering wheel frames the factory gauges. An AutoMeter tachometer and an A-pillar pod housing gauges for air/fuel ratio and boost pressure provide vital data. A Kenwood CD stereo is fitted, offering a modern touch to the classic interior.
The Built 3.8L V6 Engine
The heart of this Modified 1987 Buick Grand National is the turbocharged and intercooled 3.8-liter V6. This engine has been significantly upgraded internally to withstand increased boost pressures and power output. Key internal components include high-performance connecting rods and pistons, crucial for durability. The engine also features an aftermarket camshaft and specialized TA Performance cylinder heads.
Air is fed into the system via a Kenne Bell cold-air intake system. Combustion is forced by a large Precision turbocharger, replacing the factory unit. This setup is managed by low-impedance fuel injectors and a custom ECU calibration. An adjustable boost controller allows for fine-tuning the performance level. Recently replaced head gaskets and timing components ensure reliability for the next owner.
Turbocharged Performance and Drivetrain
The result of these extensive engine modifications is a performance profile that far exceeds factory specifications. The combination of the Precision turbo, TA cylinder heads, and custom tune delivers massive torque and horsepower. Power is routed through an aftermarket torque converter and the factory four-speed automatic transmission. This ensures quick, solid shifts under heavy load.
A limited-slip differential helps put the tremendous power effectively to the rear wheels. This crucial component includes a durable TA Performance girdle. The aftermarket exhaust system includes exhaust cut-outs, allowing the V6 to breathe freely for maximum output. The catalytic converter has been removed, indicating its clear focus on maximum performance and track use.
The Modified 1987 Buick Grand National is an iconic machine elevated far beyond its factory specification. Its turbocharged 3.8-liter V6 engine features high-performance rods, TA heads, and a potent Precision turbocharger. This combination ensures substantial performance. Power is transferred through a four-speed automatic transmission and a limited-slip differential. This final-year Grand National, refinished in black and showing 26k miles, is a prime example of the ultimate G-body drag-strip build.
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Source: bringatrailer.com
