1. Dragnut

    Dragnut Well-Known Member

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    So i need some suggestions on a radiator for my 66 Dart build, the engine is a 408 532 HP Street car Im thinking i want to go with an electric fan, so what is the best setup..? 4 core twin fans ?
     
  2. kursplat

    kursplat FABO Gold Member FABO Gold Member

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    :popcorn:
     
  3. kursplat

    kursplat FABO Gold Member FABO Gold Member

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    • Dragnut

      Dragnut Well-Known Member

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      That’s ok.. I can figure it out myself
       
    • circlepilot

      circlepilot FABO Gold Member FABO Gold Member

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    • Dragnut

      Dragnut Well-Known Member

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    • Car Nut

      Car Nut Mopar Master

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      Look at U.S Radiator, I have 22” 4 row copper/brass in my B body no A/C that keeps it in the 180’s in the Summer. I saw a 22 U.S. Radiator in a 65 with a 413 at a car show last Summer, the owner said he had no heating problem. Looked good with a metal shroud.

      Do you have A/C?
       
    • kursplat

      kursplat FABO Gold Member FABO Gold Member

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      i posted some threads that have a lot of info in them.
      the :popcorn: was in anticipation of the sometimes ruckus conversation this subject can conjure up. especially the electric vs belt driven opinions
       
    • Dana67Dart

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

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      Don't you mean cooled off!
       
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      • 512Stroker

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

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        Over the years I think I have been thru just about all the cooling configurations you can think of.
        By far the best set up that I have run is a Griffin 2 row X 1 1/4 core radiator with a Mopar 7 blade fan. I have used this set up on big cubic inch inch BBM and SBM applications with great success even with A/C.
        I have yet to find an electric fan that will cool in the high ambient temps like we get here in MO.

        Barracuda new 340 002.JPG
         
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        • kursplat

          kursplat FABO Gold Member FABO Gold Member

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          ya, they've cooled off alright :lol:
           
        • 67 gt

          67 gt A Wog boy who loves his Mopars ! FABO Gold Member

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          I just went through this ordeal myself 408 stroker had the factory 2 core 22 inch radiator with a new short shaft clutch fan ,7 blade ,fan shroud, 180 F Stewart Warner thermostat very mild day I’m talking 16-18 degrees c while running anywhere from 183-190 F if I got caught in traffic or a railway crossing I would shit myself as temps would climb to 210-220F. Purchased champion 3 core helped a little but still low speed driving or stationary same issue. In the end I bit the bullet as I had too much invested in my engine and had a custom 3 core cross flow made running a quality 16 inch thermo fan running a 160 thermostat no shroud now I can drive on a 35 degree c day in traffic and it won’t go over 190F . It was expensive but it was worth the coin. I run the overflow behind the grill and cannot be seen looking front on as the bumper hides it and the trans cooler is mounted off the centre radiator support and just bent up some flat alloy strip to support the other side.

          095AE8F2-6B28-4FCC-ACE5-B790292AD02D.jpeg

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          6FFEB3F0-4190-493F-A863-774F72E61B0C.jpeg
           
          Last edited: Jan 11, 2020
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          • sport74

            sport74 Well-Known Member

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            Everyone has their own opinion on what works / doesn't..... I'm running a champion dual core with twin SPAL fans and a 190* tstat. 74 dart sport with a 408. It did NOT directly bolt up, it required a few mods. But I got it on sale with the shroud and fans for 389 a couple years back. Some people swear by them, some people swear at them, my only experience is with this one. I can tell you from experience, do not cheap out on the fan controller if go the electric route
             
          • 512Stroker

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

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            Nice cooling setup
            And I really like the battery
             
          • 512Stroker

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

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            That does not appear to be a 22 inch core, did you increase the core support opening?
            26 inch core?
             
          • 67 gt

            67 gt A Wog boy who loves his Mopars ! FABO Gold Member

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            No cutting on the core support core is about 1/4 larger in both directions. More cooling fins and tubes in the core than your normal setup radiator. L shaped brackets to hold radiator in place bottom is supported by 2 alloy dowls welded on radiator base and sits on large rubber grommets and they poke through your lower radiator support panel.
             
          • famous bob

            famous bob mopar misfit FABO Gold Member

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            Same here , a lot of experimentation , and back to a short clutch mech fan , 28x19 crossflow , w/ 2 rows of 1 1/4" tubes .
             
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            • 66jim

              66jim Well-Known Member

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              I don't think you have much clearance on engine side on an early A. I put a puller
              on engine side and a pusher on the outside staggered to cover the core. My engine is only 300hp but the fans only come on when the car is stopped for a bit, stays cool
              no problems. With a high HP setup as yours pick the best/biggest rad. and 2 high CFM fans. I have had bad experiences with fancy electronic fan controllers failing. I
              now use simple capillary type ( one for each fan w relays) if one side fails you still
              have backup.
               
            • Dragnut

              Dragnut Well-Known Member

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              Yeah im thinking a good 4 core and twin Spal fans...
               
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              • Dragnut

                Dragnut Well-Known Member

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              • 67 gt

                67 gt A Wog boy who loves his Mopars ! FABO Gold Member

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                A company local to me in Aus, went down to see them they took measurements, come to my home sat it in made sure all was good marked outlets to cut holes into tanks ,he checked where to mount top mounting brackets took it away welded everything up returned and installed it. Now that’s customer service. Fan is programmed through the sniper can set it up at any temp to come on-off. Don’t cheap out on a quality relay and use a circuit breaker instead of a fuse as they can take a lot more load as these fans can draw a lot of amps. Just to add if your running a 50-60 amp alternator it won’t cut it under idle you will need to step it up. I run a 95 amp and under load with fan on running the msd and sniper volts drop only to 14.4 where as before it would drop to 10.8 v .
                 
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                • Dragnut

                  Dragnut Well-Known Member

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