OK... so i am in the process of choosing a new cam... anyone have dyno software i can "borrow" Can someone give me a run through of how to install a cam... i know basically how but the adjusting the lash is still a mystery to me... Difference between Hydriolic, mechanical and roller? I know about roller lifters do they require special cams? And how do i know if i have 1.5 1.6 or 1.7 rocker arms? It's a BBC 454 if that helps?