Vette(s): 1978 Silver Anniversary model. Original L82 engine, 700r4 trans, edelbrock intake, thorly headers, rack&pinion steering, mono rear and front spring, MSD 6A box
I know there has been discussion on this issue, but wonder if anyone has replaced the heater core on a non-ac car from the engine compartment? I found a artical with pictures showing this being done on a C3 (don't know what year).
Vette(s): 70 LT1 coupe, 69 350 HP coupe, 69 390HP 427 coupe, 71 LS5 convert, 85 coupe, 93 coupe
I did it on my '70, which is probably similar enough. You needed to loosen the inner box and push it in a bit to let you get at the screws that hold the core into the box. I have to believe it was a lot easier than taking everything apart inside.
It can be done but the clips that hold the heater core in are a little tricky...with any luck they are rusted and weak. When I installed the new one I used a good foam weather strip around it with a bit of windshield urethane to hold it in place, worked fine with no rattles. Where the tubes come out I used the black A/C puddy tape to hold and plug around the tubes.
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