Classic/Antique Car Repair: push rods, hydraulic valve lifters, hydraulic lifter

Question
How do I set the push rods/rockers on a 1956 235 chevy engine  ??  They are all installed but I don't want to fire it up without some setings. Thanks

Answer
This engine has hydraulic valve lifters. When I put one of these engines together I usually bring each cylinder, one at a time, to to dead center firing stroke. Then adjust the valve so that I have just taken the free play out of the push rod/rocker arm. Then I start the engine and bring it to operating temperature. Then with the engine running loosen the valve adjuster till the valve starts to tap. Turn the adjuster down till the noise stops and then slowly turn it down another 3/4 turn and tighten the lock nut. Repeat with all the adjusters. If the engine runs rough you have a valve or two too tight or there is a defective hydraulic lifter.
Brad