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  1. Ronno6

    Roller Rocker Arm Situation

    Thanks, QBuff02 for that input. There is much there to digest. I expect to correct the rocker arm alignment with self aligning rocker arms. The studs are not "out of round" but, rather,not concentric: the axis of the top threads is not the same as that of the lower threads; studs remain...
  2. Ronno6

    Roller Rocker Arm Situation

    Well, After all these trials and tribulations, I may have identified a culprit, if not THE culprit: ROCKER ARM STUDS !! PBM 5183 These were furnished as part of my engine build kit. I am not impressed......... Whilst removing them to shave the ears off my guide plates, I observed noticeable...
  3. Ronno6

    Roller Rocker Arm Situation

    Just am update: checked the rockers o the other head and 7 were spot on, 1 slightly high. Pushrods all checked to be the same length; valve stems all the same height.
  4. Ronno6

    Roller Rocker Arm Situation

    Who were "they," the rocker arms or Scorpion? I pitched that notion to Mr. Norm at Scorpion.....he was less that enthused...
  5. Ronno6

    Roller Rocker Arm Situation

    See post #55.......... the top is not where the interference is....height is not the issue.
  6. Ronno6

    Roller Rocker Arm Situation

    I did. Mr. Norm said that he has heard of this before. He recommended slotting the valve cover perimeter holes in order to move the covers up as much as .040" While that would take care of the symptom if done correctly, it did not preclude the possibility of the cover being installed incorrectly...
  7. Ronno6

    Roller Rocker Arm Situation

    good analysis. Again, due to the non-parallel orientation of each pair of rockers, outer corners at the (square) pushrod end are closer to the valve covers than the centers. The round-back rockers should alleviate that condition, assuming that they are not too long to begin with..... I could...
  8. Ronno6

    Roller Rocker Arm Situation

    Actually, the worst offending rocker arm had a perfectly centered contact patch...pushrod is the correct length. I could solve a lot of problems with a ball peen hammer....it has been considered. However, I am getting cast stainless rocker arms that are more traditionally shaped rather than...
  9. Ronno6

    Roller Rocker Arm Situation

    These 'uns: https://kmjperformance.com/sbc-chevy-350-black-tall-steel-valve-covers-w-oil-cap-hole-283-305-327-400.html
  10. Ronno6

    Roller Rocker Arm Situation

    FWIW...I checked the contact patches of all valves on 1 head, using the prescribed method of coloring the valve stem with a magic marker, installing the rocker arm to zero lash and rotating the engine thru 2 cycles. 6 out of 8 had contact patches about as dead center as they could be, 1 was...
  11. Ronno6

    Roller Rocker Arm Situation

    Thank you for your help.
  12. Ronno6

    Roller Rocker Arm Situation

    I have kinda backed myself into a corner here. Ball stud roller tip rockers would resolve a few problems: valve cover height, valve cover mounting (I could use the stock valve covers...) and alternator rear bracket mounting. The tal valve cover interferes with that bracket and I will need to cut...
  13. Ronno6

    Roller Rocker Arm Situation

    http://www.compcams.com/Products/CC-%27Pushrods%27-1.aspx Scroll downn to the Chevy section for SB w/factory roller cam....... The rockers are adjusted to 1/2turn past zero play.
  14. Ronno6

    Roller Rocker Arm Situation

    Yessirree. LT4 Hot Cam w/hyd. roller lifters.
  15. Ronno6

    Roller Rocker Arm Situation

    If yoiu have followed any or my other threads about this build you would not place me in that category.... I seem to over-analyze everything!
  16. Ronno6

    Roller Rocker Arm Situation

    Pushrods are Comp Cams 7808 and are 7.205" long for roller cam SBC. Block decked .0012" and head gaskets .0015". I had a quite lengthy post about that (quench and compression ratio.)
  17. Ronno6

    Roller Rocker Arm Situation

    I was going to propose that earlier.
  18. Ronno6

    Roller Rocker Arm Situation

    I'll check it our first.
  19. Ronno6

    Roller Rocker Arm Situation

    I'm fearing that the extra length of the stud will either bottom out on the blind holes or protrude into the intake runners on the others..........
  20. Ronno6

    Roller Rocker Arm Situation

    Gonna hafta put washers under my studs??
  21. Ronno6

    Roller Rocker Arm Situation

    Looks like the Scorpions are going back. Gonna see how the PRW's and the adjustable guide plates work out..........
  22. Ronno6

    Roller Rocker Arm Situation

    They be perimeter bolt.........
  23. Ronno6

    Roller Rocker Arm Situation

    Thanks, Kenn. I was hoping to stay with a full roller rocker. Got a great deal on these: PRW #0235010 They are self aligning, but I'll use my adjustable guide plates as well.
  24. Ronno6

    Roller Rocker Arm Situation

    Here ya go....I am not the best photog in the world tho.
  25. Ronno6

    Roller Rocker Arm Situation

    Yup I have tall valve covers. The issue is not how tall the arms/polylocks are; the issue is the very edge at the pushrod end is contacting the vertical wall of the valve cover. Basically stated, the end of the rocker arms may scrape the inside wall of the valve cover as they move up and down.......

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