* Base Model (Small Block): These typically had a top speed in the 120-130 mph range. Acceleration would be considerably slower than higher-performance versions.
* Big Block Models (427s, etc.): These Corvettes were significantly faster, capable of top speeds approaching 140 mph or even slightly higher, depending on gearing and conditions. Acceleration would be much quicker than the small block models.
* Actual Speed vs. Claimed Speed: Remember that manufacturer-stated top speeds are often optimistic and achieved under ideal conditions. Real-world top speeds would likely be somewhat lower due to factors like wind resistance, road conditions, and the car's condition.
In short, there's no single answer. A 1968 Corvette's speed ranged from moderately fast to very fast depending on the engine and options.
