What guide plates are you guys using on magnums?

Discussion in 'Magnum Engine Swaps' started by Ges2343, Jul 8, 2018.

  1. Ges2343

    Ges2343 Member

    Messages:
    14
    Likes Received:
    1
    Joined:
    Jul 24, 2011
    Location:
    North Carolina
    Local Time:
    10:16 PM
    i bought a set of comp cams and the alignment is horrible for a non adjustable guide plate. I am thinking about elongating the holes on the mill to get these straightened out.

    306667E1-6996-459D-ACFE-8720D86302E0.jpeg

    3FF34135-4FDF-454C-8445-F8708EEEFD4E.jpeg
     
  2. rumblefish360

    rumblefish360 so close yet so far away

    Messages:
    32,515
    Likes Received:
    4709
    Joined:
    Jun 21, 2005
    Location:
    New York, on a Island
    View My Photos
    Local Time:
    11:16 PM
    Last edited: Jul 9, 2018
    • Like Like x 1
    • Ges2343

      Ges2343 Member

      Messages:
      14
      Likes Received:
      1
      Joined:
      Jul 24, 2011
      Location:
      North Carolina
      Local Time:
      10:16 PM
      I guess I should have mentioned I’m running the Hughes EQ heads with the 5/16 rocker conversion studs. The ones in that link are made by Edelbrock for there 3/8 studded heads. Years ago I ran the crane kit that had a stud with a rectangle metal piece with a nylon insert with a hole for the pushrod. They still sell them as a set they are the same conversion setup for a ford. Expensive for what they are but did work. If I had to do again I would spend the extra bucks to avoid the headache. I guess what I’m saying is I want to use what I already have. Has anyone else had to modify there Comp cam magnum guideplates?
       
    • Bobzilla

      Bobzilla Well-Known Member

      Messages:
      384
      Likes Received:
      241
      Joined:
      Aug 10, 2017
      Location:
      Livonia, Michigan
      Local Time:
      11:16 PM
      I used that style with the plastic inserts about 10 or 12 years ago (still running) and it lined up poorly as well.
      It will work fine to clearance the guide plates you have. Make sure they are smooth when finished, and make sure you are running hardened pushrods, as needed with the steel guideplates anyway.
       
    • Bobzilla

      Bobzilla Well-Known Member

      Messages:
      384
      Likes Received:
      241
      Joined:
      Aug 10, 2017
      Location:
      Livonia, Michigan
      Local Time:
      11:16 PM
      I suppose you could cut a v-shaped notch in your guide plates between the two studs. The amount removed by the thickness of the blade will allow the plates to move closer together. May just need to slot the stud hole. The notch should keep them aligned, or could weld the plates together once alignment is set. This way is more involved, but would leave the finish in pushrod slots untouched.
       
      • Like Like x 1
      • Ges2343

        Ges2343 Member

        Messages:
        14
        Likes Received:
        1
        Joined:
        Jul 24, 2011
        Location:
        North Carolina
        Local Time:
        10:16 PM

        That was my thoughts was to elongate rocker stud holes side to side. That way I could line them up and sockem down. They are not toed in or out just shifted to the right or left.
         
        • Like Like x 1
        • snailpower

          snailpower Well-Known Member

          Messages:
          248
          Likes Received:
          198
          Joined:
          Jan 15, 2016
          Location:
          Los Angeles
          Local Time:
          8:16 PM
          I used the comp cams 4825-8 on my 5.9 magnum with EQ heads. They worked ok and I could adjust them to get the alignment correct. the problem I had was the QC wasn't the greatest and a few of them were tight on push rods after tightening down the rocker studs (the plate would distort and cause the pushrods to hang up slightly). I guess what can you expect for $20... it sure aint CNCed lol

          I actually went through and ordered like 4 sets from summit to see if they were all like that or if I had a bad set. Every set I looked at did the same thing. So I ended up just clearancing them slightly for a few minutes with some really high grit sand paper and it worked out fine.

          COMP Cams Pushrod Guideplates 4825-8