Best way to know horsepower is do the build and take it for Dyno tuning.
You can do all the math and calculations, and still be way off.
Real world isn't up to the maths, air temp, build quality, fuel type and consistency, mechanical variables, hell, even the amount and type of oil in the engine and transmission can have huge effects.
Build it, test it, drive it, and eventually make it explode, if all you're doing is looking for a number.
You can make an exciting 3-400 hp car that you can actually drive, or a Dyno/track queen.
Rarely can both be achieved, with a few extremely expensive outliers.
You can do all the math and calculations, and still be way off.
Real world isn't up to the maths, air temp, build quality, fuel type and consistency, mechanical variables, hell, even the amount and type of oil in the engine and transmission can have huge effects.
Build it, test it, drive it, and eventually make it explode, if all you're doing is looking for a number.
You can make an exciting 3-400 hp car that you can actually drive, or a Dyno/track queen.
Rarely can both be achieved, with a few extremely expensive outliers.
