Heater core replacement

[brusso]

So now that I've replaced the radiator the heater core is now leaking. I also replaced the radiator cap, that was waisted, with a knew 15lb cap. I'm guessing that the new cap caused the 30 year old core to start leaking. So know I'm asking, whats involved with changing the heater core on a 75 with a/c?

 

[Chas]

73 with air here...

the passenger side dash panel.....the heater ducts....air ducts....and a cable or 2....and kick panel on passenger side too....there is a vacuum line there as well....there are screws in the engine compartment side of the firewall 3 i think in mine....and the hoses run down tward the ground and out thru the bottom...while i had the heater stuff out i cleaned it and installed some small rubber o-rings that made some squeeks and rattles go away....took me about 4 or 5 hours to complete.....the cost at most stores was $65 to $70 when i told them i had air......the non - air was $30 ....i found the one i needed at Murrays for $30....told the guy i had air and he said come and get it....it matched perfectly.....i hope this helps bud...remember, this is a 73 im refering to....Good luck...Chas

So now that I've replaced the radiator the heater core is now leaking. I also replaced the radiator cap, that was waisted, with a knew 15lb cap. I'm guessing that the new cap caused the 30 year old core to start leaking. So know I'm asking, whats involved with changing the heater core on a 75 with a/c?

 

[bossvette]

Vettedude73 pretty much covered it , drain and remove hoses from underneath first. then the bolts that go through the firewall and the rest is inside, I took my seat out to make it easier on my fat a**. There is a joke that the heater core is the first thing on the assembly line and the Vette is built around it it may seem like that but it is not that bad a job.
Craig sr.

 

[brusso]

Thanks guys. I've been reading past threads on this also. I haven't looked closely at the dash at all. I didn't realize that you could remove only one side of the dash. It still doesn't sound easy but I think that I can handle it. Of course, a bypass is in order until I get more time to fix it.