* Gear ratios: The specific rear-end gearing affected top speed.
* Tire size: Different tire sizes impacted the final drive ratio.
* Engine condition and tuning: A well-maintained and tuned engine would achieve a higher top speed than a neglected one.
* Aerodynamics: While minimal, any modifications affecting aerodynamics would slightly alter the top speed.
* Road conditions and driver skill: Obtaining the car's maximum speed requires ideal conditions and careful handling.
While manufacturers rarely published top speed figures, reliable sources suggest that a 1978 Camaro Z28, with its standard 5.0L (305 cubic inch) V8, would reach a top speed in the range of 110-120 mph. However, this is an approximation, and reaching these speeds is not recommended without proper safety precautions and a controlled environment.