3 row high density cores the OP has. Last one from Glen Ray
there could be a key there, Did the OP's unit come from Glen Ray or elsewhere.
The reason for asking is as previously stated, all cores are not created equally. I know for a fact that Glen Ray uses specific sources and he has helped in resolving more than one over temp BB issues that had
NEW 22" cores from other sources.
The one from Glen Ray is the Barracuda he got running recently.
The radiator in the Hemi Dart has been in there for 9 years. 4 row high density core. It was done by a local shop
Reseda Radiator . IIRC around $500 back then.
I have an cheap Chinese Champion 22” 4-core in my Barracuda with a stroker 416, 9.7:1 compression, 242@050 solid cam. I made a metal shroud and my MP fan has 1” cut from every blade (dumb champion water neck placement). … I don’t overheat. I bought it because of cost and weight.