FalconSedanDelivery (and Others), I adjusted my valves this afternoon and the engine is purring like a kitten. I used the method as described in my Manual (see my earlier post where I copied the Manual's step by step). One thing that I did, and have done in the past when checking my engine timing, and when I want to verify that piston #1 is at the top of it's stroke, is to place a plastic straw through the spark plug hole and watch it rise up as I rotate the engine, and I also make sure that the rotor is pointing at that particular spark plug wire on the distributor (in this case the #1 wire for checking the engine timing).
In adjusting my valves this afternoon I used the straw 'method' along with paying attention to which spark plug wire the rotor was pointing to, depending on which cylinder I was working on at the time, and watched the straw rise up to the top of each piston's stroke .
FalconSedanDelivery, after adjusting the valve(s) according to my manual, I was interested in your method, so I continued to rotate the engine until I saw the exhaust valve start to move (using the #1 cylinder for example) and I noticed that the rotor was probably 45 to 50 degrees past the point of the rotor pointing at the #1 spark plug wire. So there seems to be a definite difference, or starting point when adjusting your valves between your method and the Manual's method. I am still interested as to whether or not your method is any different , or more precise then the method described in my Manual, since there is a difference between the two methods as to when you start adjusting the valve(s). I am happy with my results (the engine is purring), but since I plan on replacing the valve cover gasket soon, I may attempt to adjust the valves your way 'if' you think that it will be even better, or more precise than what I have at the moment. You mentioned that the method you use is what Nascar, IHRA / NHRA Pro Stock Guys use, so you have my attention! I hope I made sense with what I wrote above? Thanks again to everyone for their input. James