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Thread: CAM PROBLEMS

  1. #1
    Senior Member RACING JUNKIE lively's Avatar
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    CAM PROBLEMS

    I installed a new 3/4 corvette cam in my sons s10 last week and now the back 4 lifters do not work :roll:

    do you think i need to change lifters/pushrods/ or rocker arms??? ops:

    really am puzzled by these chevies at times :cry: :cry:


    ANY HELP GUYS WOULD BE GREAT :idea:

  2. #2
    Moderator RACING JUNKIE Harbone's Avatar
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    Any cracks in the lifter bores? Did you use the same lifters or new ones?
    If they were new did you bleed the lifters before install?




    OK, now everyone can start hammering him with the 3/4 Corvette cam jokes! :lol:
    Chris

    As close to "Normal" as I can get...

  3. #3
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    Install the 4th qtr of that cam and you'll be good !

    :P :P :P
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  4. #4
    Senior Member RACING JUNKIE
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    ?

    3/4 Cam,..................?
    Can you Explain that in DETAIL?
    I Use to hear that Term Alot Yrs.ago,from Weekend GearHeads that well were CLUELESS?
    Later
    G :?
    Green BULBS and WIN Lights!!!

  5. #5
    Senior Member SENIOR BUILDER
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    Re: ?

    Quote Originally Posted by bbchevy
    3/4 Cam,..................?
    Can you Explain that in DETAIL?
    I Use to hear that Term Alot Yrs.ago,from Weekend GearHeads that well were CLUELESS?
    Later
    G :?
    I used to hear that statement a lot many years ago also, and always wondered 3/4 of what? :? Please exlplain.

  6. #6
    Senior Member RACING JUNKIE TheRabbit's Avatar
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    Re: ?

    Sorry to hijack your thread lively.

    Quote Originally Posted by bcw49
    Quote Originally Posted by bbchevy
    3/4 Cam,..................?
    Can you Explain that in DETAIL?
    I Use to hear that Term Alot Yrs.ago,from Weekend GearHeads that well were CLUELESS?
    Later
    G :?
    I used to hear that statement a lot many years ago also, and always wondered 3/4 of what? :? Please exlplain.
    I did some research a while back and found out where the 3/4 camshaft came from.
    Ed Winefield was the maker and actually sold "full race cams" and "three quarter race cams".


    According to the recollections of Harvey Crane Jr.,
    ""Ed told me he first made only two masters, a semi race grind and a full race grind," Crane wrote. "He later made a third master that was more duration and lift than the semi but less than the full. He then used the full race master as an intake and the new master as an exhaust. He called this new reground camshaft a three-quarter race cam. Ed said, 'It was three-quarters of the way to a full race cam.' "

    So there really was such thing as a 3/4 race cam.
    I would imagine a southerner shortend it to 3/4 cam and confuses the racing word forever! lol


    You can google Ed Winfield and find a lot of automotive history about him.

    Sorry again Lively.

  7. #7
    Senior Member DYNO OPERATOR bixblk's Avatar
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    SBC or BBC

    It seems like these cam problems are becoming more frequent. Approximately how much running time on the cam ? As long as spring pressure was proper, break in lube used, and you did a visual under the valve covers, You may need to remove the intake and check that the cam lobes did not go flat. I have seen alot of that this year. I have spoken to some motor builders that I trust and they agree it happens ??????????

  8. #8
    Senior Member RACING JUNKIE lively's Avatar
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    ok guys --I ALSO NOTICED THE DISTRIBUTOR DOESN'T TURN EITHER :lol:

    MAN-- I THINK I HATE CHEVIES NOW FOR SURE :lol:

  9. #9
    Moderator RACING JUNKIE Harbone's Avatar
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    that dont sound good Lively :shock:
    Chris

    As close to "Normal" as I can get...

  10. #10
    Senior Member DYNO OPERATOR bixblk's Avatar
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    cam

    Cam may have broken, I would avoid cranking it and take off the intake
    Is it a SBC or BBC ?

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