[rjs53]

For a small block Chevy (or any engine with a firing order of 18436572) you can set the valves by turning the engine over just two times. Bring the engine up to #1 firing (both #1 valves closed and the timing mark aligned with zero on the timing tab) and adjust as follows: exhaust valves 1,3,4,8 and intake valves 1,2,5,7 bring engine up to #6 firing(rotate engine one complete revolution) and adjust as follows: exhaust valves 2,5,6,7 and intake valves 3,4,6,8.

Method #2:
This is the one I use and it goes like this: when the intake valve on a cylinder has opened fully and is almost closed, adjust the exhaust valve of that same cylinder. When the exhaust valve starts to open, adjust the intake valve of that same cylinder. This method takes a little longer but it works very well. your rockers should have a jam nut to help keep them tight for proper adjustment also i would recommend doing this with the motor warm