Hi Guys, I need to replace the heater core in my 1969 Dart with factory A/C. What's the best way to do this? Any tips or advise, would be appreciated.

Thanks Scott.

It can be done without removing the box or discharging the AC, but I've only barely helped a friend do one several years ago...

Nobody has any tips on doing this?

The Heater box is on the right side. It has one bolt on the left side of the housing where it attaches to the a/c box. It then has one hanger rod which you can see if you open the small fresh air door on the right and look in. The shell half that you need to remove has those real tough clips to hold the halves together. If you do not take the time to pry them off properly, you will break the lip of the heater half and then you are screwed. I broke mine and the only fix was to use silicone and clamps to get the halves back together. Hopefully I will never have to remove it again...

Thanks for the advise. Scott.

I would suggest unbolting that hanger rod and then take the one bolt out that is located in between the two boxes about halfway up the boxes. It is I believe a 3/8 not which threads on to a stud which is attached to the a/c box. Just remove that nut and the hanger. Take your two heater hoses off on the firewall. You may have to disconnect a couple of the vacuum pod linkages which are just clips. Make sure you mark them where they go. You should then be able to just pull the housing completely off and then you can remove those really tough clips that hold the two halves together. Best done on the bench. I would also get a new foam gasket set from maybe Detroit muscle. I was trying to load a picture of mine on the bench but the file size is toooo big. I will try and resize it. Here we go. You can see the small bracket that is inside the fresh air chamber. This is the bracket that holds the hanging rod. You can also see two of the clips that hold the two halves together. I had my entire unit on the bench for a rebuild. I hope this picture gives you a sense of what things are and where they are.