Here is another one of my STUPID questions...

[moparedtn]

Speaking of which, do you remember this mess I inherited with the current 440 in my GTX?

Some previous knotheads' idea of hooking up a heater hose in the wrong outlet was to insert a smaller
threaded nipple in there, then literally glue the larger nipple on top of it.
THAT was a lot of fun to try and get out of there...
I did wind up using the smaller outlet for one of the heater hoses, though - I needed the larger one up top
for my temperature sensor probe thingy for the aftermarket gauge.

The two plugged holes in this pic are where the hoses wound up being connected (note factory idiot light
sensor still in place in lower left):

 

[Kern Dog]

Just an update...because it annoys me when I give advice and never hear how it turned out!
I was out looking at the car and am happy to report: The hoses are connected correctly. I will replace them when the new HVAC system goes in but at least I know that I had it right the first time.
Thanks again to those that responded.

 

[Kern Dog]

This car was originally equipped with a 318 and A/C but when I did the 440 swap in 2001, I ditched the A/C and nothing HVAC has worked since then. When I finally broke down and admitted that a working heater and A/C would be worth the money, I decided to just replace the entire setup with a Classic Auto Air kit.
I know very little about either the factory system or the aftermarket stuff. I have noticed that occasionally, there would be coolant dripping inside the car. Because of that, I decided to temporarily bypass the heater core and just loop the two hose nipple connections together. That fitting closest to the alternator bracket is a pisser. I went for a drive earlier and had to cut it short when the temps got too hot. I did a crappy job tightening the hose clamp. I guess I do need those hose nipples suggested by member 1972GY8SE.

1/2 and 5/8 on big block Mopar. Your going to need these. did mine recently.
View attachment 727265

 

[NoCar2023]

Took the A/C out of my 70 when I was a kid. Moved to California and decided to put it back in. got lucky and found a 70 Coronet at Pick a Part with all of the parts needed to get it working. (It was still charged with Freon!)

Its a lot of work to restore the factory system on a 70, not a simple system and parts are outrageously expensive. the aftermarket system seems like the way to go.

Update - I checked out the Vintage Air SureFit system. that's a project! and $1500.00 bucks....maybe I would consider restoring the original system.

 

[Kern Dog]

The aftermarket setup made more sense to me. I wanted the smaller Sanden compressor and the all electric under dash unit.