Thread: Help Identify Knock Sound Chevy 350

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After working with the rockers 4x in the near past few days, the rockers can be adjusted to clacking, then zero and 3/4 turn with no clacking on the rocker. However, the knocking sound still persist.

It has a high volume oil pump and each rocker pumps out a ton of oil. I examined each rocker and they all seem to pump equally and raise up and down fairly equal.

So one question still remains. Can a lifter make this noise if the rocker is properly adjusted and does not make any clacking?

I will do the test tomorrow. So to confirm, take the flat head screwdriver and gently push it between the under side of the rocker tip where it meets the valve and push it between the rocker and the valve, correct?

Also in person and the valve covers off, it does not sound like the rockers but actually inside the engine.