there is a differance between and motor with stock cams and something with 272 duration... something your fatass wont ever see, being that something in the 240s degrees is large for you domestics. high 230s to low 240s is what we usually start at stock. you have no clue what to do and what not to do when you mod a car... you slap slicks on and thing your hot stuff. why dont you build a motor and not tune it and see how long it lasts. then again you might want to learn what a wrench is before you start building anything.Originally Posted by ThackerSS