New Small Block Stroker Engine Noise

moper said

I'd be removing the intake and pass side valve cover at this point. It sounds like a lifter not even trying to pump up. You can also try pulling the cover alone, and manually working each rocker individually. If I had to guess, I'd say either #4 or #6 is the issue.

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Moper, I am going to do what you suggest. Do I need to run the engine first and check them before they bleed down? Its tough to tell the cadence with a timing light but if I had to guess I'd say its with the timing light, not twice as fast. Could an exhaust valve be smacking shut and the noise is bouncing down the header tube and that is why the noise is under the car? Or maybe the lifter plunger gets collapsed and then sends the shock up the push rod, transmits it to the rocker, then to the valve, and then the noise travels down the header tube?