Weird Radiator Thingy

Good Day Everyone. Can anyone tell me what the module and two hoses are that are attached to this slant six radiator? 1974 Dart Swinger. I’ve owned three older Mopar’s in my life and I’ve never seen anything like this. This is a southern Oregon car.

its a thermoswitch for some vacuum operated piece, EGR. when it heats up it opens and allows the vacuum to flow to the dashpot. 74 was heavy emissions crap

Yes, what he said. Look to see if the vacuum diagram decal is still around, it may tell you where the hoses went. They were used to delay things operating until the engine warmed up, things like EGR valve and/or Distributor advance.

Badvert65 said:

Yes, what he said. Look to see if the vacuum diagram decal is still around, it may tell you where the hoses went. They were used to delay things operating until the engine warmed up, things like EGR valve and/or Distributor advance.

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Ah yes, emissions!

There is nothing there that most EFI cars don't also deal with; it's just that EFI cars hide the junk better.
On grocery-getters, EGR is not the devil some/most people think it is. Just look at how ingeniously 74 cars control that blasted device.
The engine cannot have EGR until;
the vacuum solenoid allows it;
Then, she can't have EGR until the intake-mounted CCEGR says it can;
Then, she still can't have EGR until Rad-mounted switch allows it;
And finally,after all that; the amount of EGR is directly controlled and varied by the venturi vacuum.
All this to control EGR to a very narrow window of engine temperature and throttle opening, simultaneously.
Flipping Ingenious.

As for the NOX valve; that there is devilish

Just something to remove and install a tapered pipe plug in the hole. I'd use an allen keyed flush plug in the hole, and not look back.