Cylinder head decision for 318

There is nothing wrong with a 318 and I guess I was trying to say, you can make them perform for fun street use. Not as powerful as a 360 unless you do it right but be careful. It is easy to over cam a stock teen and then you are going backwards until it reaches that magic rpm to make it work. You had better be prepared to change converter and rear gear if you over cam. And of course you should have headers, intake-carb and the rest to make it work. A stock 360 may get similar results if you want to go that route.

Think about how the dyno's work, how they are used and how the results are. They measure torque and calculate horsepower but nobody seems to do comparisons between components (cam, intake, carb,headers) from idle to say 3000 rpm. That's where 90% of the street driven cars spend most of their time.