1970 Heater Core

Discussion in '1970 - 1973 Specific' started by gpm6367, Sep 11, 2019.

  1. gpm6367

    gpm6367 Veteran Member Gold Member

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    Right, you can establish that’s it’s currently not leaking but not if it’s corroded inside, or the condition of 60 year old welds after repeated heating and cooling cycles, and will fail in near future.

    For $100 I’ll get a new brass/copper unit as original. And I’ll check it before I install as I have had a new unit fail on me and had to redo it...ugh...
     
  2. Rayden2009

    Rayden2009 Veteran Member Gold Member

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    May 12, 2016
    Location:
    Calgary AB
    I just put in an aluminum heater core. It was a Spectra. I went aluminum because I assumed the same as Twisted. Less corrosion due to less dissimilar metals. I have the same components as twisted as well. All aluminum except block and heads. Now I’m wondering if I should change my antifreeze. I run the green stuff, but I think we only need that because of the brass/copper heater core. Now that I have no copper/brass, can I go with a modern coolant with a different PH? Any ideas?
     

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