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...LONG stroke equates to TORQUE, while SHORT stroke equates to RPM and thus HP.
...a "square" engine is one where the bore and stroke are roughly same value.
...typically, the longer the stroke, the lower the TORQUE curve is RPM-wise; while, conversely, the shorter the stroke, the higher the point of maximum TORQUE occurs, and thus the higher the ultimate HP value, because HP is simply TORQUE per unit of time.
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