I run a 22" afco rad on my 440 with a 4-blade fixed fan(no clutch, no shroud) with a stock replacement non-a/c water pump. I can sit in traffic all day and be fine. Underhood temps do get HOT but coolant temp stays in check.

I know there's nothing you can do about it easily, but that a/c condensor has got to be just terrible for rad air flow. The trans cooler not as big of a deal because it's small.

That's a nice looking electric fan/shroud there, but at idle it's likely not flowing enough air. Water pump speed is also low near idle so they both go hand in hand.