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  • 1 Post By techinspector1
  • 1 Post By DennyW

Thread: Rocker Geometry Tool
          
   
   

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  1. #1
    Rdobbs1977's Avatar
    Rdobbs1977 is offline CHR Member Visit my Photo Gallery
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    Car Year, Make, Model: 1972 Z28 Camaro Drag Car,2500lbs w/motor
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    Rocker Geometry Tool

     



    Has anyone used this rocker geometry tool made by Proform? Thanks,

    Proform Pushrod Length Checkers 66790 - Free Shipping on Orders Over $99 at Summit Racing
    1972 Z28 Camaro, Full Drag Car, 383 CID
    1976 Camaro
    Currently building a 1.21 Gigawatt Flux Capacitor

  2. #2
    techinspector1's Avatar
    techinspector1 is offline CHR Member Visit my Photo Gallery
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    Suggest you use the procedure outlined by Straub Technologies in this video......
    https://www.youtube.com/watch?v=o5is9BsH5OU

    .
    36 sedan likes this.
    PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.

  3. #3
    Rdobbs1977's Avatar
    Rdobbs1977 is offline CHR Member Visit my Photo Gallery
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    Hey Tech, I've watched that video a few times. Don't know if I did something wrong last Saturday but: I know to take my gross valve lift, divide it in half, take the 3/8 stud measurement of .042 and divide that by half the valve lift. That comes to around about 5.5 turns on the 355's rocker after I've drawn a centerline thru the rocker and lined it up with a key stock, ruler, etc. Here was the problem I found. I could put the rocker on and barely turn the nut to keep the rocker on there (forget about the center line of rocker for a minute). After that, there's not enough thread there to even allow for 5 turns. That's why i was curious about some other methods out there or tools. Thanks, Bobby
    1972 Z28 Camaro, Full Drag Car, 383 CID
    1976 Camaro
    Currently building a 1.21 Gigawatt Flux Capacitor

  4. #4
    DennyW is offline CHR Member Visit my Photo Gallery
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    Quote Originally Posted by Rdobbs1977 View Post
    Hey Tech, I've watched that video a few times. Don't know if I did something wrong last Saturday but: I know to take my gross valve lift, divide it in half, take the 3/8 stud measurement of .042 and divide that by half the valve lift. That comes to around about 5.5 turns on the 355's rocker after I've drawn a centerline thru the rocker and lined it up with a key stock, ruler, etc. Here was the problem I found. I could put the rocker on and barely turn the nut to keep the rocker on there (forget about the center line of rocker for a minute). After that, there's not enough thread there to even allow for 5 turns. That's why i was curious about some other methods out there or tools. Thanks, Bobby
    Have you tried this method ? Works fine also. Rocker Arm & Valve Train Geometry - Circle Track Magazine
    36 sedan likes this.

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