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In my opinion that engine must be torn down and gone through completely.Trash from the bearings could be anywhere waiting t tear something else up.
I would think the bearing wear would be from a piece of something lodged in the oiling hole blocking flow,hard to tell for sure without looking at everything.I would bet the crankshaft would at least need polished.
Keith


I agree
Look close at those rod bearings, they are the last to see oil. And some time the cap side looks good and the upper rod shell is toast. More so opposite for the mains.
Have a old friend that has been building and racing Mopars for as many years that I have been around. I once mentioned Melling Oil pumps... he says JUNK... Not really given a reason, but he prefers TRW/Speed Pro and Sealed power pumps..
I like the original oil pumps off old engines.. People will trash them, I will dig them out and pull them apart... I have found some good ones too.



This from 440Source:

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Melling M-63HV High volume oil pump assembly. Completely brand new, assembled and ready to install. Currently, the only manufacturer of aftermarket oil pumps for the big block Chrysler is Melling Engine Parts. Melling has been in business since 1947, for over 6 decades. They currently manufacture over 3 million oil pumps every year. For most all applications, we recommend the high volume unit, M63HV. Aside from the billet and aluminum racing pumps made by Milodon, Keith Black and others, Melling is THE only source for stock replacement type cast iron pumps. Don't forget gaskets and attaching bolts as well (listed separately.) - http://store.440source.com/Melling-M-63HV-High-Volume-Oil-Pump-New/productinfo/M63HV/



Does TRW/Speed Pro, Sealed Power make their own pumps and if not is Melling their supplier?

I was advised by a friend after I built my 440 and had it on the road to take the Melling oil pump apart and make sure there were no shavings inside it. Luckily I didn't have any problems as it was too late.