Depends on gearing
There are many more factors involved than just hp. No way to answer that one with hp only.
about 33 mph
Because of its 645 hp engine
Horsepower (hp) is unit of measurement of power, the rate at which work is done.
Equal... in what sense? hp (horse-power) is a unit of power; 280 hp is more than 250 hp. An engine that works at a higher power can get more work done per time unit. Such an engine is also likely to use up more fuel - assuming the energy efficiency of both is similar.
50 miles per hour
25-40
Depending on if your engine has a restriction or a set speed, you can go as fast as 55 to 65 miles a hour.
there is no real "fast" engine. Cars are fast, but engines are not. U would probably say that the most powerful car engine in the fastest car is bugatti's improved 1200 hp engine in its new bugatti supersport
The relationship between horsepower (HP) and engine displacement, measured in cubic centimeters (CC), is not a direct equivalence as they are measuring different aspects of an engine's performance. Horsepower is a unit of power, representing the rate at which work is done, while CC measures the total volume of the engine's cylinders. The conversion between HP and CC varies depending on the engine's design, efficiency, and other factors, making it impossible to provide a simple, fixed conversion rate between the two units.
It will go about 40 to 50 mph