HP and CC cannot be interchanged.... There are too many variables like air intake size, exhaust restriction, fuel injection type, valve timing, spark timing, etc.
If you mean HP=Horsepower, and CC= Cubic centimeters then HP does have anything to do with CC's. Cc's are the size of the displacement of the engine. HP is the amount of power the engine produces.
how much cc's is a 6.5 hp engine
3.3 HP
There is absolutely NO relationship between HP and cc. Cc is simply the 'swept volume' of the engine. Horsepower has NOTHING to do with cc.
roughly 342 cc's to a 12 hp engine
CC (cubic centimeter) is a measurement of displacement used to identify the size of the combustion chambers in an engine. HP (horse power) is a measurement of power the engine can produce. CC and HP are not the same.
I understand that a 250 cc engine is around a 15 hp motor, so a 277 cc engine calculates about 16.5hp. there is no direct conversion between cc and hp because cc is a volume and hp is a energy.
7.5 hp
350 to 400 cc
The hp is not determined from the cc. However there is a relationship between hp and engine volume (CC). For most engines the larger the volume, the greater the hp (this doesn't always hold true however).
Number of cc's alone does not tell you HP of an engine.
76cc