This 1973 Buick Century Gran Sport presents a compelling opportunity for classic car enthusiasts, boasting a rare combination of the potent 455ci Stage 1 V8 engine and a desirable Muncie four-speed manual transmission. Having undergone a comprehensive refurbishment under previous ownership, this Gran Sport features a striking black exterior complemented by a white vinyl interior, promising an authentic vintage driving experience. With a limited production run of only 728 examples for the model year equipped with the Stage 1 V8, this particular example represents a significant piece of American muscle car history.
Exterior Refurbishment and Classic Styling
The exterior of this Century Gran Sport has been meticulously restored, with the body reportedly removed from the frame for a high-quality repaint in black. This included a white front roof section and tasteful pinstriping, extending the fresh finish to the door jambs. Replacement weatherstripping ensures a tight seal, enhancing both aesthetics and functionality. Notable exterior features include a power-operated sunroof, classic chrome bumpers, and body-color side mirrors, all adorned with Gran Sport and Stage 1 badging that signify its performance pedigree. Close inspection of the accompanying gallery reveals some minor imperfections, such as pitting on the taillights, scratches on the rear bumper, and isolated paint chips and blemishes, which are typical of a vintage vehicle.

Enhanced Performance and Handling
Rolling on classic mag-style 15-inch wheels with polished beauty rings, this Gran Sport is fitted with 255/60 Cooper Cobra Radial G/T tires that feature raised white lettering, adding to its aggressive stance. The suspension has been thoroughly overhauled during the refurbishment, incorporating new bushings and hardware, along with Koni shocks at all four corners. This upgrade significantly contributes to improved handling and ride quality. The car is equipped with power steering for effortless maneuverability, while braking is managed by front disc brakes and rear drums, providing adequate stopping power for its era.

Vintage Interior Appointments
The cabin of the 1973 Buick Century Gran Sport offers a classic American interior experience, featuring comfortable front bucket seats and a rear bench upholstered in white vinyl. This is complemented by color-coordinated door panels and black carpets, maintaining a cohesive look. Modern conveniences from the era include power windows and an AM radio. An aftermarket remote keyless entry system has been added for enhanced security and ease of access. Further details from the refurbishment include a replaced headliner and windshield wiper motor. The gallery images do show some discoloration on the armrests, a common sign of age in vintage interiors.

Driver-Focused Dashboard and Instrumentation
The driver is greeted by a three-spoke steering wheel fronting a 120-mph speedometer and a combination gauge cluster, along with an integrated clock. For monitoring engine performance, a Sun tachometer is mounted conveniently on the steering column. Additional AutoMeter gauges, displaying oil pressure and coolant temperature, are neatly integrated below the dashboard. The five-digit odometer currently reads 87,000 miles, though the true mileage is unknown.
1973 Buick Century Gran Sport dashboard with tachometer and gauges
The Legendary 455ci Stage 1 V8 Engine
At the heart of this performance machine lies the formidable 455ci V8 engine, which is reported to have been rebuilt during the prior ownership. This powerplant features a dual-snorkel air cleaner for optimal airflow, a four-barrel carburetor for robust fuel delivery, and eye-catching polished valve covers. A practical knife-blade disconnect switch has been fitted to the battery for safety and ease of maintenance. The robust nature of the Stage 1 package makes this one of the most reliable muscle cars from its era.

Muncie Four-Speed Manual Transmission
Power is efficiently delivered to the rear wheels via a sought-after Muncie four-speed manual transmission, a key element for enthusiasts seeking an engaging driving experience. The fuel tank has been treated with a clear coat for protection, and the dual exhaust system terminates with distinctive turn-down tips, providing an authentic muscle car soundtrack. This combination of the powerful V8 and manual gearbox makes it a standout among classic cars.
VIN Decoding and Title Information
The Vehicle Identification Number (VIN) provides key production details:
- 4 – Buick Division
- D – Century Model
- 37 – 2-door coupe body style
- V – 455ci Stage 1 V8 engine with a four-barrel carburetor
- 3 – 1973 model year
- H – Assembled at the Flint, Michigan plant
- 117657 – Sequential production number
The accompanying Kansas title is noted as a Replacement Title and carries an Antique brand. This 1973 Buick Century Gran Sport, offered at no reserve, represents a fantastic opportunity to acquire a well-refurbished piece of American automotive history.
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