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The 1987 Buick Grand National stands as a legendary icon in American automotive history, revered for its potent turbocharged V-6 engine and distinctive blacked-out aesthetic. This particular 1987 Buick Grand National Custom Coupe takes that legacy a step further, having been meticulously transformed into a highly sought-after GNX replica. Combining the original Grand National’s robust foundation with performance enhancements and visual cues inspired by the ultra-rare GNX, this coupe offers an exceptional blend of classic appeal and enhanced capabilities. Its appearance at the Florida Summer Special 2025 on Friday, July 11th, presents an exciting opportunity for enthusiasts to acquire a unique piece of Buick performance heritage.
Authentic GNX-Inspired Design and Details: This custom coupe began its life as an original 1987 Buick Grand National, providing an authentic base for its GNX replica transformation. The exterior is finished in the iconic Black, synonymous with the Grand National and GNX models, exuding a menacing and understated power. Functional GNX fender louvers have been integrated, contributing to both the authentic appearance and potential for improved airflow. Subtle yet significant details, such as ASC decals adorning the air conditioning and intercooler equipment, further enhance the GNX replication, demonstrating meticulous attention to detail.
Wheels, Suspension, and Braking: The vehicle maintains a period-correct yet performance-oriented stance with its factory 16-inch Black cross lace wheels, which are complemented by authentic GNX center caps. These wheels are fitted with Toyo SuperCar tires, providing modern grip and handling capabilities to match the increased power. The suspension system has been upgraded with an aluminum rear-end cover and adjustable suspension components, suggesting improved handling dynamics and the ability to fine-tune the ride for optimal performance. Power steering and power brakes contribute to a more modern and comfortable driving experience, making this powerful machine easier to manage.
Refreshed Interior with GNX Flair: The interior of this custom Grand National has been thoroughly refreshed, featuring a new Black and Gray bucket seat upholstery that provides both comfort and a sporty aesthetic. The color scheme is a perfect complement to the exterior, creating a cohesive and purposeful cabin environment. The attention to detail extends to the trunk, which boasts a GNX finished interior, adding to the overall high-quality feel of the replica. This thoughtful interior presentation ensures that the car’s performance capabilities are matched by its refined and inviting cabin.
Powertrain and Performance Details: At the heart of this 1987 Buick Grand National Custom Coupe is its formidable 3.8L turbocharged V-6 engine, the powerhouse that defined the original Grand National’s legendary status. This engine has been further enhanced with a T62 turbocharger and an air-to-air intercooler, significant upgrades designed to boost performance and efficiency. The air-to-air intercooler is crucial for cooling the charge air from the turbocharger, leading to denser air intake and, consequently, more power. Power is smoothly delivered to the rear wheels via an overdrive 4-speed automatic transmission, offering a balance of spirited acceleration and comfortable highway cruising. The exhaust system features a 3-inch stainless steel dual setup, ensuring efficient exhaust flow and producing a characteristic, robust engine note that enthusiasts will appreciate. This combination of upgrades creates a highly capable and engaging driving experience, echoing the raw power of its GNX inspiration.
Documentation and Added Value: This custom 1987 Buick Grand National comes with valuable documentation that underscores the quality and authenticity of its GNX replica build. It includes GNX literature, providing historical context and details about the original limited-production model it emulates. Furthermore, extensive receipts are included, documenting the considerable investment and work that went into its transformation and maintenance. These materials offer peace of mind and confirm the thoroughness of the build, making this a well-documented and desirable example for any collector or enthusiast.
Summary:
- GNX replica built using an original 1987 Buick Grand National coupe.
- Features a turbocharged 3.8L V-6 engine with a T62 turbocharger and air-to-air intercooler.
- Equipped with an overdrive 4-speed automatic transmission.
- Finished in iconic Black exterior with functional GNX fender louvers.
- New Black and Gray bucket seat interior and GNX finished trunk.
- Includes power steering and brakes for modern driving comfort.
- Rides on factory 16-inch Black cross lace wheels with GNX center caps and Toyo SuperCar tires.
- Suspension features an aluminum rear-end cover with adjustable components.
- Exhaust system is a 3-inch stainless steel dual setup.
- Comes with GNX literature and extensive receipts.
Disclaimer: Information provided is for general informational purposes only and is based on available details. Potential buyers are advised to conduct their own thorough inspection and verification of any vehicle.
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