1970 GSX: As one of the Top 10 Muscle Cars of All Time, the Buick 1970 GSX has certainly carved its place in American motor history. In the years preceding this particular model, General Motors had limited itself to a 400 cid engine. However, by the time 1970 rolled around, the desire for a little more power under the hood was finally too much to bear, and GM lifted the limit. In the GSX, a GS 455 V-8 replaced the 400 cid V-8.
Available in two colors, Apollo White or Saturn Yellow, the GSX came with a hood-mounted tach and heavy-duty suspension, among other details, of course. Almost 3/4 of the 687 total units produced were ordered with the optional Stage 1 upgrade, which gave the car larger valves with stronger springs, ported heads, and revised carburetor jetting, along with a horsepower that some claimed to have been over 400, which was more than the 360 horsepower GM listed for the GSX.
A few aesthetic additions made the GSX stand out, like the front spoiler and racing stripes which continued under the front end of the hood. The mirrors were even unique-they were Sports mirrors, which were reserved just for the GSX series. They featured an “X” proudly displayed on the support plates.
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