Making power out of the 318

I think I googled stock MPG of my 70 Swinger 340 and it was something like 13 when new but gas was cheap...:)
now V8 mileage in a standard car is what 18-20? like my 86 Fuel injected Mustang gets that I believe.
I don't daily drive a v8 car, but when I drive them on weekends I do have to put gas in them its just the way it is you pay for that power.
Ill drive my Fox body all weekend on interstate trips. I figure I'm paying for the enjoyment of driving that V8 its something that young people may or may not ever know but the torque, power and response of even a stock V8 is special and unique.