I have a question about the valve adjustment. Techinspector1, you said to adjust the rocker arms 1/8 turn after all the slack is removed from the valvetrain(zero lash). I have always adjususted 1/2 turn except when using Competition Cams Pro Magnumroller lifters. The Pro Magnum is basicaly a race lifter. The rest of the Comp Cam line is 1/2 turn after zero lash. G.M. recommends 3/4 to 1 turn after zero lash. I'm just a little concerned why you would say to adjust the valves 1/8 turn without knowing which lifters are going into the engine.

Quote Originally Posted by techinspector1 View Post
Loosen both adjusting nuts on both rockers on #1 cylinder until the rockers are loose on the studs. Have your friend hold his finger on the tip of one of them so that he is pinching the rocker arm down onto the tip of the valve, holding it tightly. Now, you grasp the pushrod for the rocker he is holding down and jiggle the pushrod up and down while using a socket wrench to slowly tighten down the rocker arm adjusting nut until all the slack is removed and you cannot move the pushrod up or down any longer. Be delicate here. This is not a strong-armed operation. You are simply taking all the slack out of the pushrod and getting the rocker adjusting nut very slightly tightened down against the trunnion of the rocker arm. Now, make 1/8 turn more on the adjusting nut.....1/8 turn.....45 degrees......OK, that valve is done. Now, move over to the other valve on #1 cylinder and repeat the operation.
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