Once all the components are back in place, the easiest way to set lifter preload is to use the exhaust opening/intake closing method (EO/IC). With the valve covers off, rotate the crank clockwise by hand until the exhaust valve starts to open. You can identify the exhaust valve because it will line up with the header pipe. When the exhaust valve is roughly one-quarter open, stop and set the preload on the intake valve. A typical preload value for a street engine is between 1⁄4 and 1⁄2 turn after all the clearance between the pushrod and the rocker is removed.