The Buick GS Muscle Car

The Buick GSX was about the biggest car you could possibly get during the era of the muscle car between 2967 and 1972. The model of the GS started out being the Grand Sport option in the 1965 model as well as the model 1966 Skylark. Pontiac found wild success with its GTO model option of the Tempest. In 1967, the GS became a line model of its own. There was a model known as the Jr. GS that continued through 1982 with the same engine as the GS340 that was turned into a GS350 version with a bigger 350 CI engine.

There was a model that was called the California GS from 1968-1969 with special badges and other trim pieces called the GS350. Buick started to add some performance options in 1968 with the Stage 1 option. According to Buick, the horsepower was raised by five with this option. In 1972, “Motor Trend” rated the 1970 Buick GSX Stage 1 to be the fastest muscle car by Buick at that time. They timed the quarter mile at 13.38 seconds.

The GSX model has a large trim package which included the only color options available for the 1970 GSX (Saturn Yellow and Apollo White.) This model had unique stripes down the side of the spoiler to the side of the car. There was a tachometer on the hood facing the driver and an upgraded four speed Hurst shifter, front disks and a stronger suspension. The Buick GS was the most dominate muscle car on the market by Buick when they added in the mix which made for a truly potent machine. The Stage 1 option had hotter cams that helped to push the car and better valve springs that helped to push the compression ratio to a 11.0:1 from a 10.25:1.