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Radiator pressure question?

Discussion in 'The Hokey Ass Message Board' started by ZZ-IRON, Mar 22, 2012.

  1. ZZ-IRON
    Joined: Feb 28, 2007
    Posts: 1,964

    ZZ-IRON
    Member
    from Minnesota

    just picked up a new aluminum Griffin radiator for a 57 T Bird like near free
    it's going in my 50 Olds which is getting a rebuilt 55 Olds 324

    the cubic inches multiplied per square inches of the core works
    the installation fit is close

    Pressure Question -
    the Griffin can take a 16 or 17 pound cap can the 55 Olds 324 take that pressure
    or is a 12 to 14 pounds a better option
    Thanks for any input
     
    Last edited: Mar 22, 2012
  2. Gary in da UP
    Joined: Jan 12, 2008
    Posts: 86

    Gary in da UP
    Member

    More is not better. If that rad can't keep it running at less than 190 degrees unpressurized in temperate minnysoda, Something is wrong. Start with an 8 lb cap. I fix and recore a lot of rads. Too much pressure makes them bulge and split, failure rates go up.
     
  3. Rex_A_Lott
    Joined: Feb 5, 2007
    Posts: 1,019

    Rex_A_Lott
    Member

    Dont worry about the radiator, worry about your heater core, if you have one. Use the lower 7# or so as suggested.
     
  4. ZZ-IRON
    Joined: Feb 28, 2007
    Posts: 1,964

    ZZ-IRON
    Member
    from Minnesota

    7 or 8 pounds now that rings a bell yeah that's sounds like the answer
    Thanks
     

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