What pulleys for manual steering 1970 duster v8

Small Block Mopar Engine

  1. StimsonGarage

    StimsonGarage Well-Known Member

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    926C9BC4-C8F6-4799-8A82-44FE5841A212.png hey guys so I recently installed a cvf vbelt water pump pulley and crank pulley and alternator bracket on my 70 duster. My issue is the crank pulley is too small and causing my voltage to be low at idle. What’s the correct crank and water pump pulley combo I need. It’s manual steering too. Part number and website would be awsome thank you. Here’s a pic of my engine
     
  2. 4spdragtop

    4spdragtop Well-Known Member

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    Google bouchillon performance. I've heard and seen lots of recommendations for them.
     
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    • Garrett Ellison

      Garrett Ellison Amateur driver on public roadway, do not imitate.. FABO Gold Member

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      I'm wanting to say the factory steel one is 6-1/2 to 7 inches, and it uses the same size on the water pump. Correction, 6-1/2 inches. Larger ones are usually multiple belt a/c pulleys.
       
    • oldkimmer

      oldkimmer FABO Gold Member FABO Gold Member

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      The smaller crank pulley can also lead to overheating. Kim
       
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      • oldkimmer

        oldkimmer FABO Gold Member FABO Gold Member

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        How big is the w/p pulley? Kim
         
      • abodyjoe

        abodyjoe Well-Known Member

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        • abodyjoe

          abodyjoe Well-Known Member

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          don't forget the proper alt. bracket too.

          70-up small block  crank pulley no air.png

          70-up small block wp pulley no air.png
           
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          • abodyjoe

            abodyjoe Well-Known Member

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            pulley1-1.jpg


            for manual steering
            nonpspulley.jpg
             
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            • Donnie514

              Donnie514 FABO Gold Member FABO Gold Member

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              How long do you let it idle? If it does not over heat there should not really be a problem.
              If the voltage goes below 12.6 ah maybe 12.2 at idle it may be a weak battery unless you have some accessories on.
              It looks nice, you spent the bucks, so if it is not broke don't fix it.
               
            • StimsonGarage

              StimsonGarage Well-Known Member

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              I put my old crank pulley on thats about 6inches wide. Had the belt just run the alternator and crank and voltage stayed steady at 14. So it’s definitely pulleys. I’m gonna order the ones the other guys suggested
               
            • StimsonGarage

              StimsonGarage Well-Known Member

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              Thank you everyone big help. Mopar to ya
               
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