Why are 318's low HP and torque?

Mild cam 262ish and headers with duals will wake your up the 318 to 250+ HP, 300+ you'll need more compression 9:1+ so you can go with bigger cam and more head flow. Google 400 HP 318 there's like 5 different builds mostly using stock parts will show doesn't take a lot to make these engines to run strong. P.S. Torque is made by how much fuel and air your engine can ingest and compress for every power stroke that why bigger displacement engines have the advantage. Horsepower how much fuel and air your can use in a given amount of time, heads, cam, intake and exhaust is the major contributors to HP, that's why more RPM's equals more HP more power strokes per minute is more fuel and air per minute.