Roller rocker choice for HYD rollercam/for High Miles-Full life

Big Block A body Tech

  1. yellow rose

    yellow rose Overnight Sensation FABO Gold Member

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    I’m saying weight on that side of the rocker is pretty much unimportant. Look at what guys have finally started running for pushrods. It used to be that a 3/8 pushrod was all that. Now guys are running 5/8 pushrods, 9/16-5/8 single and double tapered pushrods and as big and heavy as they can get them.

    The trade off is that little increase in weight in nothing compared to the power and durability you get out of the big stuff.


    BTW, PM me if you want to sell those mushroom lifters. I’ve been wanting a set for donkey years.
     
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    • IQ52

      IQ52 Well-Known Member

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      This is correct and one of the reasons I never consult with Comp Cams Tech Line......or for that matter.....Edelbrock's Tech Line. Comp's engineers I've had good luck with.
       
    • NITROTRIP

      NITROTRIP Active Member

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      Hi Yellow Rose,
      I mostly have lifter examples in pairs going back into the 50s. For doing custom block machining
      on a Bridgeport like I described a few posts back. Like 40yrs ago on the outlaw sprint GM stuff.
      I made a custom riser for my mill back then so yes, I can put a 440 on it and even do the cam
      bores, with the crank in line with the table. Way before CNC. Manual 1-of setup. Used to tease
      my brother about cnc way back then, as of now he has 36yrs cnc for the areo space industry
      doing ultra small parts for satalites in extream hard to machine alloy's. Like a internal threaded hole in titanium, size 0000-120 thread pitch. Back then it was "wow-175 beeeutiful precision parts
      all wrong instead of 1
      "Then the outlaw guy's for other engine's wanted .904 1" inch mushroom tappets over the GM .925's, anything over .940 would pickup the next lobe. On to mech rollers.

      To answer your question, I have pairs for referance all these years.

      Take care,
      Rick
       
    • RustyRatRod

      RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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      Yes, that's right. I'm not sure until I mock it up. I have the Crane adjusters for this one and they are pretty long. Might have enough.....but then, I know the three thread rule too.....so I may end up givin Smith Brothers a ring. Whichever, it'll be right when it's done.
       
    • NITROTRIP

      NITROTRIP Active Member

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      Hi IQ52,
      Some things seem to never change, Comp was that way 35yrs ago along with Edelbrock. Outstanding engineers with both of them from the start. I have pulled out more damaged comp parts in others engines from bad tech than I have installed. Nothing wrong with there parts, good
      stuff. But simple tech like I asked a week ago about the rocker adjuster. Best parts on the world are worthless without good tech. It was not on there website nor the newest catalog download.
      Im retired and know know what to look for and have the time. The last thing other than a intake
      I used from Edelbrock was a set of V8 flathead cylinder heads.
      Thank You,
      Rick
       
    • IQ52

      IQ52 Well-Known Member

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      When I put a longer valve in this engine using roller rockers I ended up with a huge off center sweep across the valve tip.
      400/450 stroker....Cheap parts, lotta work.

      And had to make this in Post #93 & #94 to correct the geometry.........

      400/450 stroker....Cheap parts, lotta work.
       
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      • NITROTRIP

        NITROTRIP Active Member

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        RRR, IQ52 ect.
        Seems you are not directing your posts to me.
        You have your own thing going with more posts than I have for my question.
        I am here for my questions, not a bunch of back and forth that does not apply
        to me, I value your input as you guy's are good builders. I am am being kind here
        and again value you input.
        Rick
         
      • MOPAROFFICIAL

        MOPAROFFICIAL FABO Gold Member FABO Gold Member

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      • MOPAROFFICIAL

        MOPAROFFICIAL FABO Gold Member FABO Gold Member

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        Hey Rick, get real.
        No one builds n runs these things into the 100k+ anymore to be able to tell you.. "sure these roller rockers will go 100k"..
        More like.." I put these on a 100k motor n so far so good.."
        They just don't get driven enough these days to put that kind of milage on them.
        Sorry there's no guinea pigs here.
        Maybe you could return the favor and help us all out by being the tester.


        Ps, by the way you want/ask for advice...
        ..you should be paying for it.
         
      • MOPAROFFICIAL

        MOPAROFFICIAL FABO Gold Member FABO Gold Member

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        No words for this.
         
      • IQ52

        IQ52 Well-Known Member

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        Ah yes. Selfish of me. I just spend tens of thousands of dollars and test my own stuff. Damn I'm sorry I couldn't help with the rocker arm longevity question.

        Or maybe........

        Did I?
         
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