Hughes converter question

Engine, Trans & Driveline

  1. MO.RR

    MO.RR Active Member

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  2. VANDAN

    VANDAN FBBO Gold Member FBBO Gold Member

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    I'm NO expert on converters, but I am in process of choosing one for my build, which seems very similar to yours. I'm working with my transmission builder, and He likes the Hughes products. You can call them directly, and have them build one specifically for your car, as You can give them the details of it. I'm just waiting for a few specs on mine, to get it done...
     
  3. Napoleon1991

    Napoleon1991 Well-Known Member

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    FWIW, I bought that same convertor. I followed the directions and pre-filled it and seated it correctly, and it still only lasted 100 miles. Ended up using a precision industries convertor and havent had any issues since.
     
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    • Lefty71

      Lefty71 FBBO Gold Member FBBO Gold Member

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      This is a good question!!
      I always thought you only needed the flexplate, which is an awesome SFI one to boot, then the converter could be neutral balance. Anyone sure if I'm right or wrong??
       
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      • 33 IMP

        33 IMP FBBO Gold Member FBBO Gold Member

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        If you have a cast crank big block, it is externally balanced, by a weighted converter, and a weighted balancer. With the b&m plate you can use a neutral converter, but you still need the weighted balancer.
        My question is.... what about the steel crank motors that use the heavy ("six pack") rods. I think there was an external balance on those too, but i dont know if it was on the balancer, the converter or both. Or even if it was the same imbalance as the cast crank motors?
         
      • Dipstick

        Dipstick Well-Known Member

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        Mass balanced to run smooth, not externally balanced.
         
      • Curiousyellow71

        Curiousyellow71 Well-Known Member

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        I think the converter part number listed is for internally balanced so the external balancing flex plate should work.
        I think the unusual 6 pack rods with a cast crank runs a different balancer then ly rods/cast crank and the converter is balanced the same. I assumed the convertors were the same anyway. I believe that was how the 70 6 pack was done...they made up for the rotating mass on the 6 pack damper and it was internally balanced.
         
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        • Lefty71

          Lefty71 FBBO Gold Member FBBO Gold Member

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          Six pack damper was like a fat thin damper (all concentric). No big offset weight like the cast crank damper, Which you would expect.
           
        • MO.RR

          MO.RR Active Member

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          that’s no bueno.
           
        • wyrmrider

          wyrmrider Well-Known Member

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          what's a balancer

          posts 5 & 7
           
        • Curiousyellow71

          Curiousyellow71 Well-Known Member

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          Damper...harmonic "balancer"
          But your right just saying "balancer"....probably not the best description.Lol.
          But...I am guilty. :)
           
        • 33 IMP

          33 IMP FBBO Gold Member FBBO Gold Member

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          Its that big heavy thing on the end of the crankshaft that balances an externally balanced crankshaft. And where's your question mark?:rofl:
           
        • wyrmrider

          wyrmrider Well-Known Member

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          Which end of the crankshaft
          are you referring to the weights on the converter
          add a question mark if you think it could possibly help you
           
        • Curiousyellow71

          Curiousyellow71 Well-Known Member

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          It seems like someone needs to do a sticky thread on converter weights engine combos... It would sure help prevent some mistakes.
           
          Last edited: May 25, 2020
        • Lefty71

          Lefty71 FBBO Gold Member FBBO Gold Member

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          From what ive read, no converter weights are gonna be requiered if he runs that B&M external balance flex-plate. This is what my thinking was asll along.
           
        • wyrmrider

          wyrmrider Well-Known Member

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          Right Lefty
          but which B@M
          6 pack is different than cast crank or 400
          not something you want to just pick up at a swapmeet unless you really know
           
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