Running works for me
Those foils 'hats' are a great tip, in place of the oil stopper clips. I have also used cardboard, edge down below the springs, settled into the channel just inside where the valve cover seats. I also like the spinning rod technique, but it requires some dexterity.
Chiltons: "Normalize engine temp by running it for about 20 minutes. remove valve covers. Install clips (hats). For hydraulic lifters, as shadow and most of us have, turn each rocker arm nut counter clockwise (CCW) until the rocker arm starts to clatter. Turn it CW slowly until the clatter just stops. This is zwero lash. Turn (tighten) it an additional 1/4 turn, waiting 10 seconds each time, until each nut has been turned down one full turn. This one, preload adjustment, must be done slowly to allow the lifter to adjust itself and prevfent possible interference between the intake valve head and the top of the piston. Noisy lifters should be replaced."
Shadow: buy, and get to know a manual for your car. Read it carefully with each procedure, step by step. Continue to ask experienced mechanics for help. Some tricks are not in the books.
I have used 1/2 to a full turn preload. Engines vary, but the stockers would do okay with a full turn or a half turn past 'quiet'.
Please learn form my experience in one thing. If you install a new camshaft, install new lifters. Use the lifters specified by the cam provider or your warranty might be invalid. Coast Corvette sold me a nice Comp cam, but included whoooozit lifters. Guess how long it took for one lobe to flatten? No warranty, pal.
Follow the manufactures instructions, as to break in, pre-lube, etc. You don't want to do the job again, or break a valve or piston. It's not rocket science, but knowledge and care is required.
Da Shadow knows, a guy built it; another guy can fix it.
