Horsepower is considered the heart of any performance on a vehicle, such as a snowmobile. The more horsepower an engine has, the quicker it can accelerate and move forward throughout all of its gears. This is especially true on lighter vehicles like snowmobiles.
More horsepower is always the main goal when enthusiasts build their vehicles. This is because more horsepower essentially makes the vehicle faster. Horsepower also affects the power band on a vehicle, often requiring the use of forge internals in order to keep the standard engine from blowing. If the engine loses power, then the snowmobile will gradually become slower.
Horsepower works in conjunction with torque. Torque is reflected by how much twisting work is being put into motion. However, the stark difference between the two has to the with the relevance of time. Torque in not relevant to time and instead is set to be more static. While horsepower pushes the engine to blow through the power-band, torque begins at its peak. This is because a vehicle like a snowmobile needs to utilize its maximum torque, while it is accelerating from a dead stop, so it can push the complete weight of the vehicle. As the vehicle accelerates, using horsepower, the need for torque lessens.