Originally Posted by moparguy
One odd observation I mentioned in the original post, after a bit at low rpm the knock goes away. Happened again today, however bring the rpm up to 1500 or so and it's back, let it idle for 10 minutes or so at low rpm and it goes away.

You've probably got a misaligned oil spray tube that's starving a rod for oil at speeds above idle. I have an aiming fixture that's used with a water hose or a solvent tank pump to bend the nozzles for a correct squirt into the rod dippers at running speed.
Jerry

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