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1970 Buick

GS

1970 Buick

GS

This was the most exciting year for Buick muscle cars. GM finally lifted the ban that intermediately sized cars cannot exceed 400ci’s. Therefore, Buick stuffed a brand new 455ci in its newly restyled GS models. The 455 spun a hotter cam with bigger valves and kept the functional hood scoops, sucking up plenty of cold air. The 455s were underrated at 350hp, but an astonishing 510 lb-ft of torque! A Stage 1 option was available with an even hotter cam, bigger valves, and a revised carburetor. Buick rated it at 360hp, but some experts believe that to be closer to 400hp. A new GSX appearance package became available with front and rear spoilers, contrasting body stripes, meaty tires, hood tach, and heavy-duty suspension. One could not get this car in any other color than Saturn Yellow or Apollo White. The GS 350 was still available, but the California GS had been dropped.



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Performance Specs

Available Engines
GS350

350ci

1x4bbl

315 hp @ 4600

410 lb-ft @ 3200

GS455

455ci

1x4bbl

350 hp @ 4600

510 lb-ft @ 2800

GS455 Stage 1

455ci

1x4bbl

360 hp @ 4600

510 lb-ft @ 2800

Transmissions
  • 3-Speed Manual
  • 4-Speed Manual
  • 350 Auto
  • 400 Auto
Engine
0 to 60 MPH
Quarter Mile
Source

455ci/360hp

6.5 sec

13.8 sec @ 101 mph

n/a

Paint & Color

Exterior Colors

Glacier White

Silver Mist Poly

Gulfstream Blue Poly

Diplomat Blue Poly

Aqua Mist Poly

Seamist Green Poly

Sherwood Green Poly

Bamboo Cream

Cornet Gold Poly

Harvest Gold Poly

Desert Gold Poly

Burnished Saddle Poly

Titian Red Poly

Fire Red

Burgundy Mist Poly

Regal Black

Interior Colors

Black

Ivory

Medium Blue Poly

Dark Blue Poly

Dark Brown

Medium Saddle

Dark Saddle

Medium Sandalwood

Dark Sandalwood

Dark Green Poly

Medium Red

Dark Red

Production Numbers

GS350: 2-Dr Hardtop

9,948

GS455: 2-Dr Hardtop

8,732

GS455: 2-Dr Convertible

1,416

Total Production

20,096

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