valve lash

Discussion in 'PSI Superchargers Tech Questions' started by promod53, Feb 8, 2011.

  1. promod53

    promod53 New Member

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    i bought a used kb olds with big chief heads and havent had any luck from the cam manufacturer on valve lash any suggestions where to start it is a roller cam and blown any help would be great thanx greg
     
    #1
    promod53, Feb 8, 2011
  2. WANNABE

    WANNABE New Member

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    Who is the maker of the cam? Certain companies set theirs to general ranges.
    And if you don't know that, then PRM, spring pressure closed and open, general valve weight.
     
    #2
    WANNABE, Feb 8, 2011
  3. Ken Sitko

    Ken Sitko Super Comp

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    normal lash is .026 on both intake and exhaust, but some Erson cams ask for 30.
     
    #3
    Ken Sitko, Feb 8, 2011
  4. Blownalky

    Blownalky Top Sportsman

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    That's what we run hot but set it at .014" cold to get that. Solid KB-Olds with solid AJPE Billet heads, Crane cam.
     
    #4
    Blownalky, Feb 8, 2011
  5. lucky devil

    lucky devil Member

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    We ran a Donovan BBC with Big Chiefs , Lunati cam , big lift , T&D valve gear. We set 14 cold 25 hot.
     
    #5
    lucky devil, Feb 9, 2011
  6. wcolantuoni

    wcolantuoni Jr. Dragster

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    I only have one feeler guage in my box. Intake @ .016, exhaust @ .016, spark plugs @ .016. Lol

    .014 to .016 should get you close. Can you get the cam numbers off the cam?
     
    #6
    wcolantuoni, Feb 9, 2011

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