12 hp
About 7-9 horsepower.
CC is NOT correlated to Horsepower. Cc is merely the capacity of that engine, NO relationship to horsepower.
There is no standard relation between horsepower and engine displacement.
7 to 8 hp
You are going to use it in a lawnmoer to race they are i think about 15 hp but if u want a fast lawnmower use a snowmobile engine
There is not such conversion of displacement to HP. You have what is basically a 17 cu. in engine and that would seem to be and 8 to 10 HP engine in an OHV configuration.
9.5 h.p.
1 cc = 0.0338140227 US fluid ounces144 cc = 4.86921927 US fluid ounces