Few cars embody the golden age of American muscle like the 1970 Oldsmobile Cutlass Supreme SX 455. This rare two-door hardtop pairs a rebuilt Rocket V8 with the confident stance of a true performance icon. Dressed in its vivid Astro Blue finish, it doesn’t just roll down the street, it makes a statement. Collectors and enthusiasts will find it a rare blend of power, style, and history.
A Rare Breed with Distinct Presence
Only 6,404 examples of the Cutlass Supreme SX left the factory in 1970. The SX package added unique flair, including bold badging, 442-style trumpet exhausts, and upscale trim touches. This particular car has been carefully refurbished, bringing its muscle car attitude back to life.
Restored in Striking Astro Blue
Its body wears a fresh coat of original Astro Blue paint, a color that pops against gleaming chrome bumpers and detailed grille inserts. The restoration brought in new headlights, taillights, and windshield. Quad headlights and crisp side moldings give the front end its aggressive, unmistakable look.
Power and Performance: The Rocket V8
Beneath the hood sits a rebuilt 455ci Rocket V8, originally paired with a two-barrel carburetor. It delivers the deep torque that defined the era. Power is sent through a Turbo-Hydramatic three-speed automatic transmission, recently serviced for smooth shifts, and a Positraction limited-slip differential. The combination promises both strength and reliability.
Rolling Strong with Rally Style
Refinished 14-inch Super Stock II wheels are wrapped in BFGoodrich Radial T/A tires, giving it a proper period stance. Power steering ensures easy maneuvering, while power-assisted front disc and rear drum brakes offer confident stopping power. Suspension upgrades, including fresh ball joints, control arm bushings, and steering components, add to the car’s solid road feel.
Interior with Authentic Vintage Vibes
Step inside, and you’ll find re-trimmed blue vinyl upholstery paired with a refreshed headliner, door panels, and carpets. The woodgrain dash and center console provide an upscale touch, though cracks in the dash pad speak to its age. The air conditioning, radio, and eight-track player are currently inoperative, but the cabin retains its undeniable charm.
Gauges and Driving Details
The dash hosts a 120-mph speedometer, analog clock, and fuel gauge. Its five-digit odometer reads 11k miles but has rolled over. Just 25 miles have been added under current ownership, keeping it close to its post-restoration condition.
From Factory to Road
Built in Fremont, California, during the second week of November 1970, this Cutlass Supreme SX was first delivered to Joe Ward Oldsmobile in Oregon. The included build sheet verifies the Y79 SX Performance Package and other original options, adding to its documented heritage.
Summary
The 1970 OldsmobileCutlass Supreme SX 455 is more than a restored muscle car, it’s a rolling chapter of performance history. With its rebuilt Rocket V8, factory SX trim, and timeless styling, it offers a thrilling blend of nostalgia and road-ready excitement. For those who value rarity and heritage, this Cutlass delivers on every front.
Disclaimer: Vehicle features and condition are based on seller-provided information and may vary.
