* Engine design: The type of engine (4-stroke, 2-stroke, rotary), number of cylinders, valvetrain design, and other internal components all significantly affect power output.
* Compression ratio: A higher compression ratio generally leads to more power.
* Aspiration: Naturally aspirated engines produce less horsepower than turbocharged or supercharged engines of the same displacement.
* Fueling system: The efficiency of the fuel delivery system impacts power.
* Tuning: How the engine is tuned (e.g., ignition timing, air/fuel mixture) greatly affects horsepower.
A 1340 cc engine could produce anywhere from roughly 60 horsepower in a very basic, low-performance design to well over 150 horsepower with forced induction and advanced engineering. You need more information about the specific engine to determine its horsepower.
