Manual to power steering conversion

Suspension, Steering and Chassis

  1. French demon

    French demon Well-Known Member

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    Hello forum

    I would like to convert my '71 Demon to power steering and of course, I need all parts (gearbox, pump, pulley, brackets and so on).

    I found this PS gearbox for sale. The seller tells that this part comes from Yearone and has a 1-1/8-inch sector shaft.
    Is it compatible with my stock slant-six Demon?

    DA.JPG
    DA2.JPG

    All help will be greatly appreciated.
    Thanks
    Francois
     
  2. 694spd

    694spd Well-Known Member

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    One thing you will also need is a power steering column, which has a shorter steering shaft compared to the manual steering shaft.
     
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    • French demon

      French demon Well-Known Member

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      Isn't it possible to shorten the manual steering shaft?

      And no idea about the compatibility of the gearbox?
       
    • pishta

      pishta I know I'm right....

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      you can shorten...but it involved a hack saw. 73 was the large sector shaft year with larger C body and truck/vans having the large sector before this. 1 1/8 should be a small sector dimension, your good.
       
    • dano

      dano Evil Handy Man

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      I converted to power. For the pump I used the Tuff Stuff Saginaw pump for rack and pinion. It has a lower pressure and gives you a good assist without the over powered steering with your pinky feel the stock pressure gives.
       
    • French demon

      French demon Well-Known Member

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      During the conversion, did you shorten the stock steering shaft or did you replace it with a PS shaft?

      I didn't know what is a Tuff Stuff Saginaw pump, but I had a look on Google. I am in Europe and such a pump can be very expensive when combined with shipping and taxes :BangHead: Thanks anyway for the tip
       
    • dano

      dano Evil Handy Man

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      You can take a stock Saginaw and shim it to give less pressure.

      Pump It Down....EASY

      For the column I used a Flaming River B-body column and cut the D shaft down. So I didn't use a stock set up. You can either buy a power column, or just buy the shaft and swap them out. Column would be easiest.
       
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      • Backally

        Backally FABO Gold Member FABO Gold Member

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        When I converted I bought a shaft from someone on here. Sold my manual shaft on here also.
         
      • cudamark

        cudamark FABO Gold Member FABO Gold Member

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        It's not just a matter of shortening the shaft (or replacing it with the correct length), the coupler is different too. Best to just get the correct P/S center shaft and coupler for your column. I would imagine the center shaft a year or two either way should swap into your column. You also have the expensive option of getting a aftermarket kit that includes everything you need.
         
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