Valve lash adjustment?

RYC CUKR said:

With pedestal mount rockers the only thing that you can really do is shimming them.

Here is the procedure as it was told to me. It worked for me.

Assemble the pushrods and loosely bolt down the rocker arms for cylinder #1
Rotate the until you are at TDC for cylinder #1 and verify that both of the lifters are on the base circle of the cam. At this point both the intake and exhaust valves will be closed.
Tighten the rocker bolt down until there is no play between the pushrod and the end of the rocker. I tightened mine down until I couldn't rock the rocker back and forth from the pushrod to the valve stem. You don't want to get it tight yet just take the play out of it. Get out your torque wrench and tighten the rocker bolt down to between 18 and 25 ft-lbs or torque but you want the bolt to turn more than a 1/4 turn but less than 3/4 turn to achieve the torque value. If you get to specified torque value before a 1/4 turn then your pushrods are too short and you don't have the proper preload. If it takes more than a 3/4 turn then your pushrods are too long and you have too much preload. If they are a little to long it can be a production variance in the heads or rockers that can be corrected with shims. If they pushrods are too short then there isn't much you can do except get longer pushrods.
Do the same for each cylinder and they should be good to go. I have gone back and checked them after a few heat cycles just to check them.

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