69 383 Water Pump Housing Casting Defect?

Bewy said

Don't know how many times we have to tell you: a core that looks like post #27 has to go the rad shop to be rodded out. No amount of flushing will remove ALL the debris. That junk is forced into the tubes by pressure, the pump operating at high rpms, & flushing pressure will NOT remove it. I had a filter in the upper hose to collect debris. At high rpms, the water pressure acting against a piece of debris punched a hole in the filter material; that is the sort of pressure involved. Nothing to do with cavitation that you keep on about.

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Don’t worry, I know this radiator is shot without a re-core, I believe you guys that the flow is heavily restricted. The filter would be for the new radiator coming in the next month, since it seems like there is always new sediment showing up no matter how much we flush the system. My main goal at this point is to fix as many of the other issues besides the clogged cores before the new rad goes in. There seemed to be pretty solid evidence of cavitation in the first post I made on this thread, wanted to make sure a new pump housing wasn’t needed too. The hood seal seemed to help with the cooling, so mainly things like that.