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Thread: help 350 crate motor
          
   
   

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  1. #1
    tk71 is offline CHR Member Visit my Photo Gallery
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    help 350 crate motor

     



    i can't get this thing to quit pinging. it's a290 hp gm crate motor with headers 600 edelbrock carb and performer intake hei dist.shoul vac advance be hooked to manifold vac or ported vac?
    Last edited by tk71; 10-31-2009 at 03:47 PM.

  2. #2
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Depends on where it works best...What's your initial timing set at, and where is the vacuum and centrifugal coming in at?????
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  3. #3
    tk71 is offline CHR Member Visit my Photo Gallery
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    it's set at 10 with 17 manifold vac

  4. #4
    tk71 is offline CHR Member Visit my Photo Gallery
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    i've set timing as low as 4 with no help

  5. #5
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Could back the initial off to 8--then see where the rest of the timing is coming in at...Soons like it hits too early, does it still rattle on ported vacuum??? Is your vacuum advance canister adjustable????
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  6. #6
    tk71 is offline CHR Member Visit my Photo Gallery
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    i've tried ported and manifold still rattles. i don't know about canister

  7. #7
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    tango is offline CHR Member Visit my Photo Gallery
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    Did you use a used balancer that might be spun ? Also take your Dist Cap and Rotor off and take a Look at your Advance weights and springs . Make sure they are not binding up and return Like they should . One more thing bad Fuel can also do this ?
    Wisdom is acquired by experience, not just by age

  8. #8
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    Without knowing where the vacuum and mechanical advance is coming in, hard to say what needs to be done... Check the obvious, then put a light on it and see what the timing is doing.....
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  9. #9
    tk71 is offline CHR Member Visit my Photo Gallery
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    new professional products balancer 97 octane will check dist tomorow

  10. #10
    tk71 is offline CHR Member Visit my Photo Gallery
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    shouldvac advance be hooked to ported or manifold vacume?

  11. #11
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
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    It depends on where you want it to start coming in at...Manifold vacuum port will be sooner....
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  12. #12
    R Pope is offline CHR Member Visit my Photo Gallery
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    Ignore the marks, retard it a few degrees and road test it. If it still pings, retard it more. When you get it to work the way you like, put a light on it and record the reading for future reference.
    Be aware that a lean condition can cause pinging with the timing "correct" by the specs.

  13. #13
    tk71 is offline CHR Member Visit my Photo Gallery
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    i've went so far back it won't hardley run

  14. #14
    tk71 is offline CHR Member Visit my Photo Gallery
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    thanks guys i'll start over and try again this week TK

  15. #15
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    18436572 is offline CHR Member Visit my Photo Gallery
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    Try reading this from Lars Grimsrud, good stuff!

    http://home.comcast.net/~chadwick.robert/howto.pdf

    http://members.shaw.ca/crussel/hei/HEIPrimer2.html

    http://www.corvetteclub.org.uk/files...istributor.pdf

    http://65corvette.nonethewiser.net/t...um_advance.pdf

    http://www.chevelles.com/forums/printthread.php?t=19938

    The last post contains the non-HEI and HEI vacuum canisters.
    I have the HEI dizzy and use the AR-31 the "aggressive" canisters and that solved all my problems with pinging. Canisters run about $10 and are easy to install.
    Hope this helps and let us know how you turned out!

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