1. douglas340

    douglas340 Well-Known Member

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    Hi, just wondering if I can use the magnum pushrods in a LA SB?
    I'm running a solid roller and need a size 7.34 inch chromoly pushrod(ball & cup)that comp cams sell off the shelf but they suit a Magnum engine.
     
  2. Bighead440

    Bighead440 Well-Known Member

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    Solid roller with LA adjustable rockers you need cup/ball, which Magnums are ball/ball. You could swap to ball adjusters (female socket), but I doubt it would nail your length needs off the shelf with a hydraulic roller Magnum pushrod. Good luck though!
     
  3. TrailBeast

    TrailBeast Slightly Twisted Member

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    As mentioned Magnum pushrods are ball/ball AND they are just under 7 inches.
    6.936 or some such number.
     
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    • douglas340

      douglas340 Well-Known Member

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      Sorry I've stuffed up there! Magnum is the Comp Cam brand not the style of engine lol.
      The 7.34 measurement, would that be from inside the cup or overall length?
       
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      • Bighead440

        Bighead440 Well-Known Member

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        Those MAY work, as long as the base circle isn't too small on the cam and the pushrod seat height is identical on the solid roller lifters you have and a flat tappet lifter (doubtful).
         
      • Wyrmrider

        Wyrmrider Well-Known Member

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        what rockers?
        get your geometry right B 4 ordering pushrods lots of threads on this with good pics right now
        mathematically you measure to the center of the ball and cup

        practically they measure from end to end flat spots on the ends for hollow pushrods are not well defined
        do your lifters have oil through the pushrod capability? helps
         
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