1970 Buick GS 455 Convertible
(518) 373-1403
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  • Exterior: Seamist Green
  • Interior: Ivory
  • Stock #: C-3028EE
  • Engine: 455CI
  • VIN #: 446670Z116448
  • Transmission: Automatic
  • Mileage: 23,777
Vehicle Description
1970 Buick  GS455  Convertible
Gorgeous Seamist Green

GS 455 Ram Air 455/350 HP V8
Highly Documented 

Documented Original Numbers-Matching

Assembled in Fremont, California Then headed straight for Hawaii


Factory Air Conditioning

TH400 Automatic Transmission

Highly Optioned 

Original 455 cubic inch Buick 
Original GM Turbo-Hydramatic 400 3-speed automatic transmission

10-bolt rear axle / 3.08 gears

Factory power steering

Factory 4-wheel power drum brakes

Chrome Magnum 500 wheels

 Seamist Green paint /  White top

 Ivory interior / Factory air conditioning

Fully Documented

5-year Restoration

Exterior  Seamist Green single-stage, this awesome Buick rolled off GM's Fremont, California assembly line during the first week of March, 1969 and headed straight for Hawaii. After 37 years serving just 2 owners, the car was shipped back to the mainland in need of minor repair. And, when it fell into the hands of a third owner, it became the focal point of a detailed, 5-year restoration that wrapped in the summer of 2014. During that thorough reboot, straight and solid sheet metal was worked to better-than-new condition. Fresh Seamist Green 2-stage was topped with correct White vinyl. And presently, this GS rolls as a rare and unique classic that's exactly the kind of all-business, no-nonsense muscle car Buick always intended it to be.

By 1970, Buick had pretty much perfected its top dog performance offerings both mechanically and aesthetically. At the front of the car, a clean, silver grille hangs a bold GS emblem between a re-chromed bumper, chrome-trimmed headlights and clear parking lamps. Behind that grille, a scooped hood hides correctly recessed wipers at the base of factory tint glass and original stainless trim. At the sides of that hood, traditional door handles and color-keyed sport mirrors perfectly complement fresh wheel frames, red-trimmed rocker guards and fresh GS ornamentation. And at the back of the car, a second re-chromed bumper centers a classy “BUICK” script between clear tail lamps, correct deck trim and a fourth “GS” emblem.


While the exterior of this slick A-Body does an excellent job of upholding GM Design's world-class visual aesthetics, the engine compartment is where purists REALLY start to take notice. And for good reason too, because the burly, 455 cubic inch V8 that's bolted between the car's freshly detailed fenders is the kind of killer powerhouse that makes people either put up or shut up. Turn the key and a big Quadrajet carburetor mixes air from a black, dual-snorkel cleaner with fuel that's supplied by carefully bent stainless, and shoves it into a correct, cast iron intake. That intake feeds cast iron heads, which ride between a familiar points distributor and high quality Super Max plug wires. Spent gases are jetted through correct, cast iron manifolds, which ride under traditional, stamped steel valve covers. And a large radiator, which circulates water around an old school Frigidaire AC compressor via pliable hoses and reproduction tower clamps, provides cooling. The bright red block looks fantastic, framed in Satin Black fenders and dressed in an array of correct decals. Well-planned details, like an authentic Delco Moraine brake booster, a Saginaw steering box and a high quality Delco battery topper, prove someone spent a lot of time executing this Buick's top-notch restoration. And naturally, the monster mill displays a correct 1231738 casting number and matching partial VIN.


Under this Buick, it's just as the factory planned, except with much more precision and, subsequently, much more appeal. An original, “BA” branded Turbo-Hydramatic 400 3-speed sends power to a familiar 10-bolt that's equipped with mild, 3.08 gears. Holding that killer drivetrain off the ground is a familiar double A-arm front and 4-link rear suspension that's equipped with factory power steering. During restoration, power-assisted drums were completely rebuilt to factory specifications. On the outside of those brakes, chrome Magnum 500s twist GoodYear  The aforementioned manifolds dump spent gases in to aluminized pipes, which follow an X-shaped crossover with throaty Pypes Street Pro mufflers. The car's frame, free of any major damage, is painted black to match its solid, undercoated floors. And, in keeping with the 455 up top, much attention has been paid to making sure everything under this classic is clean, mean and ready to go!


Pop the sculpted doors and you'll find a correct code 175 Ivory interior that's still restoration-fresh in virtually every way. Comfy seats and fade-free door panels continue the placid feeling of the soothing Seamist Green exterior. In front of the car's rare, power-adjustable front bench, an original dash frames a vintage Sonomatic radio, controls for Harrison air conditioning and crystal clear telemetry. At the base of that dash, heavy duty, shield-branded floor mats protect like-new carpet. In front of the driver, a cool Buick steering wheel laps a tilting column that's fitted with a simple shifter. Behind the passengers, a bright convertible cowl snaps tight over a lighted trunk that's complete with a fresh mat, a correct jack, a full-size spare tire and a new decklid decal. And factory power windows join a power-operated roof in welcoming cool spring mornings and crisp fall evenings.


With this unique GS, authenticity is inborn. Here's a breakdown of the car's specially coded VIN and original cowl tag.


* 4: Buick Motor Division
* 46: GS455
* 67: Convertible
* 0: 1970 model year
* Z: Assembled in Fremont, California
* XXXXXX: Production sequence number


* 70: 1970 model year
* 4: Buick Motor Division
* 46: GS455
* 67: Convertible
* BF: Assembled in Fremont, California
* 00057: Fisher Body sequence number
* 175: Ivory interior
* 45: Seamist Green paint
* A: White convertible top
* 03A: Assembled during the first week (A) of March (03), 1970



* An original Owner's Manual
* A correct Warranty Booklet
* A vintage Service Guide
* An original Protect-O-Plate
* A copy of the car's factory warranty transfer
* A stack of registration certificates that span from 1973 to 2005
* A reproduction window sticker
* A large showboard
* A small jar of paint

In summary, this clean, numbers-matching GS is a phenomenal car that, from the ground up, likely couldn't be duplicated for anywhere near our asking price. Its killer V8 will cruise effortlessly at will, and its slick body, classy interior and tough transmission are desirable attributes that set it apart from run-of-the-mill A-Bodies. As a rule, well-done Buick muscle cars usually don't inhabit our showroom for very long. And when they're built and priced like this, it's easy to see why!

All advertised prices exclude government fees and taxes, any finance charges, any dealer document preparation charge, and any emission testing charge. The price for listed vehicles as equipped does not include charges such as: License, Title, Registration Fees, State or Local Taxes, Dealer Prep, Smog Fees, Credit Investigation, Optional Credit Insurance, Physical Damage of Liability Insurance, or Delivery Fees. DEALER makes no representations, expressed or implied, to any actual or prospective purchaser or owner of this vehicle as to the existence, ownership, accuracy, description or condition of the listed vehicle's equipment, accessories, price, specials or any warranties. Any and all differences must be addressed prior to the sale of this vehicle.