Washers on head bolts

General Mopar Tech Discussions

  1. djbr459

    djbr459 Well-Known Member

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    Hi,
    I'm putting the heads on a 383.
    I have Mopar head bolts and they didn't come with washers.
    Are washers needed?
    Thanks
     
  2. pnora

    pnora FBBO Gold Member FBBO Gold Member

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    No. Unless they are special and designed to be used with washers.
     
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    • 69 Sleeper Bee

      69 Sleeper Bee Well-Known Member

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      No. Washers are for studs not head bolts
       
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      • toolmanmike

        toolmanmike Henchman #2 Staff Member FBBO Gold Member

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        A little oil on the threads and under the bolt head is all is needed. Just a little. I dip my finger in some 10/30 and give the threads a swipe. Shouldn't even have enough to drip off. You don't want oil to puddle in the bottom of the bolt hole.
         
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        • pnora

          pnora FBBO Gold Member FBBO Gold Member

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          Not correct. Stock bolts did not use washers. Aftermarket such as ARP and others can have washers on bolts as well as the stud nuts. Poster did not say what bolts he bought. That's why I said no unless they are special.
           
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          • 69 GeeTeeX

            69 GeeTeeX Well-Known Member

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            Aluminum heads require washers with the bolts.
             
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            • 69 Sleeper Bee

              69 Sleeper Bee Well-Known Member

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              I was answering the OP not you.
              You are correct about stock head bolts not using washers.
              He said he had mopar head bolts that did not come with washers so that told me they were stock style.
               
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              • RemCharger

                RemCharger Well-Known Member

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                Compare the UHL of the bolts. Stock vs "mopar"
                 
              • djbr459

                djbr459 Well-Known Member

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                Thanks for all of the responses.
                I didn't think they needed washers but I thought that I would ask the experts.
                 
              • polee

                polee Member

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                does anyone know the length of intake manifolds bolts on 426 hemi
                 
              • toolmanmike

                toolmanmike Henchman #2 Staff Member FBBO Gold Member

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                You should start your own thread for that information.
                 
              • Dipstick

                Dipstick Well-Known Member

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                The Max Wedge being the exception. They used a hardened washer P/N 2402351 under the head bolt. Reason being, the MW used a stainless steel head gasket which was harder to compress, so there was a chance the underside of the bolt head would gall the head when torqueing the bolts.
                 
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                • Trench

                  Trench Well-Known Member

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                  So can factory bolts be reused with aluminium heads?
                   
                • pnora

                  pnora FBBO Gold Member FBBO Gold Member

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                  What heads? What does the head manufacturer recommend?
                   
                • Trench

                  Trench Well-Known Member

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                  They are Edelbrock 5090 heads. Edelbrock recommends "High quality head bolts with hardened washers". Could hardened washers be added with the factory bolts?
                   
                • RemCharger

                  RemCharger Well-Known Member

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                  Just get the ARPs. For that head. Generally the big factory bolt head doesn't work in the bolt hole pocket anyway.
                   
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                  • pnora

                    pnora FBBO Gold Member FBBO Gold Member

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                    Would not be recommended. Just get the right bolts.
                     
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                    • Trench

                      Trench Well-Known Member

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                      I bought the ARP bolts.
                       
                    • 440 Charger

                      440 Charger FBBO Gold Member FBBO Gold Member

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                      You did get replies Lol.
                       
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