Harley Sportster 883 Horsepower
If I use several electric motors that increase the over-all even?

Based on my knowledge I think it will, but I'm not sure … My goal is fundamental to see if I can use a series of electric motors to replicate the torque / power of a Harley Sportster 883 engine

For optimal HP an electric motor can use a "motor-controller that controls the input frequency to tune each engine at its optimal output due to the fact that all magnets are unique characteristics, such as motor coils.

Harley Sportster 883 Horsepower