There isn't a formula for equating horsepower to displacement. That'll be determined by the injectors, the displacement, stroke, and compression of the pistons, and other factors.
13.5
divide the cc by 15 to get the horsepower.
14 hp in 420cc you take 420cc devide by 30 = 14hp
A Briggs and Stratton 420cc engine typically produces around 14 to 15 horsepower, depending on the specific model and its intended application. This engine is often used in lawn mowers, pressure washers, and other outdoor equipment. It's designed for reliable performance in various tasks requiring moderate power output.
17.5
420 cc how fast
How many horsepower is what putting out?
Roughly 16.5 HP
CC is NOT correlated to Horsepower. Cc is merely the capacity of that engine, NO relationship to horsepower.
0.5 horsepower how many watts
500 horsepower
500 horsepower for a stock motor.Can be built for race to 1300 horsepower.