26" radiator for a slant six?

Heating / Cooling / AC

  1. French demon

    French demon Well-Known Member

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    Hello guys

    My '71 Demon doesn't have its original radiator anymore, but a brand new aftermarket one.
    Cooling is just fine.

    I have the opportunity to buy an original but used 26" rad (#34434970), seemingly for '71 318/340. Isn't it too much large for a 198ci, causing too much cooling?
    Would the cooling liquid reach 180°?

    Thank you in advance
    François
     
  2. 72Dart6pack

    72Dart6pack Harder Better Faster Stronger.

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    The opening on the core support is only 22 inches. Not sure what you would do with a 26 inch Radiator?
     
  3. townsend

    townsend Well-Known Member

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    3443970 radiator was not used on the 1971 demon. That radiator was used on the Barracuda and the Challenger.
     
  4. French demon

    French demon Well-Known Member

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    @72Dart6pack :Core support is only 22 inches wide on Demon? Oh, yes... I should have checked the width before asking my question :rolleyes:

    @townsend : E-bodies affectation only isn't a major problem. This 3443970 rad is year matching and original. But indeed, a too large width can be a major problem :D

    Thanks
     
    Last edited: Jul 12, 2021
  5. 65 Dartman

    65 Dartman FABO Gold Member FABO Gold Member

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    I once owned a 71 Valiant 4 door with a 225. What was interesting was everything was heavy duty - 8.75 with 3.23 SG, V8 torsion bars, 8.75 with 3.23 SG, and it had a 26 inch radiator.

    Back story on it - I bought it from the original owner who special ordered it so he could tow his trailer! I asked him Why a slant. He said for the mileage when he wasn’t using it to tow.
     
  6. Syleng1

    Syleng1 Karma is real and Life is short... FABO Gold Member

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    Also the radiator hose placement is different between v8 and /6
     
  7. Dana67Dart

    Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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    No never too much cooling!

    The thermostat will keep the engine at temp.

    The advantage is as long as you have a proper fan setup you could sit in traffic in AZ in the middle of summer and never overheat.
     
  8. French demon

    French demon Well-Known Member

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    Only the upper one. The lower one is in the same location.
    My aftemarket rad ( a Spectra Premium) is for a small block V8 and I only had to reroute the upper hose.

    28-01-2021.JPG
     
    Last edited: Jul 12, 2021
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    • French demon

      French demon Well-Known Member

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      Today, I measured my Spectra Premium rad. It's 26" wide.
      Even if the opening is only 22", at least my rad would be an original Mopar... and it comes with the fan shroud for a very decent price.
       
    • Dana67Dart

      Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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      The opening for the fan in the shroud may not be in the correct location.

      I see you are in France so I get it that you are limited to the availability of parts, but spending good money on parts that may not fit correctly seem a waste.

      Put up a wanted add, someone may have everything you need to complete your resto and be willing to ship it to you

      (by the way the engine compartment looks awesome)
       
    • French demon

      French demon Well-Known Member

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      Using the fan shroud or not isn't very important as Slant six rads don't have a fan shroud (my aftermarket rad doesn't have one)
      On the other hand, the rad itself seems to be in a good shape.
      I can get it for $100.00
      Just need a good checking by a professional and an upper tank paint job.

      briançon1.JPG

      briançon2.JPG
       
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      • go-fish

        go-fish Well-Known Member

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        I have an A-body 26” radiator fan shroud for sale if you need one.
         
      • French demon

        French demon Well-Known Member

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        Thank you. I will check the rad and shroud compatibility as soon as I will receive them.
        If needed, I'll be back to you
         
      • 65 Dartman

        65 Dartman FABO Gold Member FABO Gold Member

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        Are you anywhere near Valence? We have another member with a blue Duster who lives near there.
         
      • Dana67Dart

        Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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        IIRC AC cars did get a shroud even with /6
         
      • French demon

        French demon Well-Known Member

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        Valence? 300 kms from home.
        Is it Vincent?
         
      • French demon

        French demon Well-Known Member

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        Ah, ok. I didn't know.
        My Demon doesn't have AC.
         
      • leblanc

        leblanc member 2883

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        I could use a fan shroud BUT from Cali to New Brunswick Canada the shipping would be more than the price of the shroud.
         
      • go-fish

        go-fish Well-Known Member

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        E8D5B887-723F-4A6D-9016-86FF95627D38.jpeg
        My apologies guys! I just saw that I mis-typed. It is not a shroud that I have. I have a 26” radiator core support.
         
        Last edited: Jul 12, 2021
      • 65 Dartman

        65 Dartman FABO Gold Member FABO Gold Member

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        Yes, it’s Vince. We were going to visit him in 2020 but the Covid-19 interfered
         
      • leblanc

        leblanc member 2883

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        No foul
         
      • 72Dart6pack

        72Dart6pack Harder Better Faster Stronger.

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        Buy us all donuts and we will forgive you. :)
         
      • 512Stroker

        512Stroker We are all here because we are not all there.

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        Overkill
        I dont like using used radiators, too many bad experiences
        Source an American made direct fit replacement, you will be better off in the long run. Stay away from the off shore junk.
         
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