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Thread: VALVE ADJUSTMENT 4/7 SWAP CAM

  1. #1
    Senior Member SENIOR BUILDER
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    VALVE ADJUSTMENT 4/7 SWAP CAM

    Wats the easiest meathod to adjust my valves on a BBC with a 4/7 swap cam?
    "The only thing better than Cubic inches is more of them"


    GO THE ALL BLACKS!!!!!!!!

  2. #2
    Senior Member RACING JUNKIE
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    The exact same way you adjust them on any engine. the 4 7 swap has nothing to do with it...unless you use a method like "Bring number 1 to TDC then adjust intakes on these cylinders.... etc

    Just adjust each valve when the lifter is on the base circle.

    When the ex starts to open, adjust the intake. When the intake has opened completely and is on it's way closed, adjust the exhaust.

  3. #3
    Senior Member SENIOR BUILDER
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    That answer hasnt realy given me a method. I have always done it starting on TDC etc. Wats the best way to do it. and the quickest
    "The only thing better than Cubic inches is more of them"


    GO THE ALL BLACKS!!!!!!!!

  4. #4
    Senior Member RACING JUNKIE
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    Quote Originally Posted by jrthone
    That answer hasnt realy given me a method. I have always done it starting on TDC etc. Wats the best way to do it. and the quickest

    Quote Originally Posted by Tod74
    When the ex starts to open, adjust the intake. When the intake has opened completely and is on it's way closed, adjust the exhaust.

  5. #5
    Senior Member DYNO OPERATOR
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    Do it the way Tod said to do it.

  6. #6
    Senior Member DYNO OPERATOR
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    I adjust mine like Tod said only I adjust them in the firing order. I do the exhaust first, then the intakes. This way I'm only rotating the engine over a couple of times.

    TS1955

  7. #7
    Senior Member RACING JUNKIE
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    Just lash them the way you've always done it. WITH the new firing order, you'll be just fine. As long as the lifter is on the base circle, for the valve you are adjusting, everthing will be just fine.
    No matter where you go, there you are.
    **IN GOD WE TRUST**

  8. #8
    Senior Member RACING JUNKIE
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    when using EO IC method you must be quick... I recomend turning the idle speed down as low as possible. ...

  9. #9
    Senior Member EXPERT BUILDER
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    I just fell out of my chair laughing Tod! :lol:
    Josh VanHorne

    1964 Chevy Nova
    Worlds quickest and fastest tow truck. (9.92 @ 137)

    http://static.racingjunk.com/63/ui/7...247837-479.jpg

    http://www.racingjunk.com/profile/211708

  10. #10
    Senior Member SENIOR BUILDER
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    ok thanks. all that info was no help at all. In the above 8 threads i did not get step by step method. I am new to this and this has wasted alot of my time. If ANY 1 out there has a STEP by STEP Method it would be greatly apreciated.
    "The only thing better than Cubic inches is more of them"


    GO THE ALL BLACKS!!!!!!!!


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