A top speed would depend on several factors beyond the engine, including:
* Engine Condition: A well-maintained engine will perform better than a neglected one.
* Gear Ratio: Different axle ratios will affect acceleration and top speed.
* Aerodynamics: Modifications or added weight can affect top speed.
* Road Conditions: The surface and weather will impact performance.
You'll need to specify the engine size (e.g., 267 cubic inch V6, 305 cubic inch V8, or 350 cubic inch V8) to get a more precise estimate of its potential top speed. Even then, it's an estimate as real-world conditions significantly influence performance.