\6 knocking

Good morning 64dartgold, How did the crank bearings look when you found the bad rod bearing ? and one other thing would be a wrist pin getting hammered some on the same cylinder the rod bearing went bad. Is this a solid lifter /6 ?
I would use a scope, looks like doctors steptascope you listen to each cyclender or anywhere to locate the knock. Is the knock coming from the front, middle or back of the engine ?