The 1969 Buick skylark Gran sport 400 is one of quite a few high-performance muscle cars manufactured by Buick. It was built from 1968 to 1969 and was produced in two special models; the GS 400 convertible and the GS 400 hardtop model.
1969 Buick GS400 specs
The 1969 Buick Gran sport specs included the 340-horsepower, 400-cid V-8 and were obtainable in coupe and convertible models. 3-speed and 4-speed manual transmissions were obtainable together with a 3-speed Turbo Hydra-matic automatic transmission. Cold-air Stage I and Stage II introduction was readily obtainable by January 1968, and was the efficient alternative of choice.
A Stage I fitted GS 400 could race about 60-mph from rest in 7.5 seconds. It boasted a high performance cam shaft, extraordinary standardized Quadra-jet carburetor, fast-flow fuel pump, high pressure lubrication system and 10:25 to 1 compression ratio. There is also an 11-inch super duty clutch, a Hurst shift linkage, 3:64 posi-traction, power top, power steering power brakes and Super Sport chrome wheels.
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A “Stage 2″ with dealer option was likewise obtainable. When prearranged, the factory delivered the vehicle with the parts in the trunk to the dealer. Parts incorporated an intake manifold, even hotter camshaft, headers, hollow pushrods, higher compression pistons and some calibration changes for the ignition and carburetor. The ultra rare Stage 2 package had power increased to 360hp.
The 1969 Buick Gran sport 400 engine has a Compression ratio which was a rational 10.25:1, and permitted for the use of any grade gasoline during normal driving.
In 1969, the GS 400 got regular well-designed hood scoops, something none of its higher-profile commercial compatriots had. The “Cool Air” induction system utilized a twin-snorkel air purifier with two foam muffs that preserved against the scoop openings. Buick stated that the system amplified maximum horsepower by about 8 percent and maxed out torque by 6% over the whole rpm range, even if the car’s base 400-cid V-8 maintained the 340-bhp score from 1968.
A total of 1176 Buick Gran Sport GS400 was manufactured in 1969. The interior had a floor console, Soft Ray colored date-coded glass, an electric clock with quartz movement, elevated white letter wide ovals, and shift plate with built-in tachometer, AM/FM radio, and factory-fitted air conditioning.
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1969 Buick Gran Sport colors
The Buick Gran sport had a pearl white interior and the exterior was available in virtually every colour although most common were the white or red colors before it was replaced by the GSX which was available in only two colors, Yellow or Apollo White.
Although everyone thought the GS400 wouldn’t last more than a year in production, it lasted two before being replaced. It is one of the most sought after super American muscle cars of the ‘60s era.