So I had a coolant leak and replaced the upper radiator hose and then noticed that I had a major leak in the heater hose going from the motor to the heater core(?) I'm not a great mechanic but that's what I gather. When I pulled that off it took the copper(?) pipe fitting with it out of the heater core. I had to cut that pipe out of the hose in order to reuse it. Needless to say I was able to get that piece of pipe back in but it is not sealing within with the heater core. There are no leaks between the hose and the copper pipe, just between the pipe and the heater core. I see newer 350 V8's have plastic connectors or threaded fittings which my 76 GMC does not have.

Is there something I can do to seal this or a replacement part that would work?

John
'76 GMC Vandura 4x4