what to set overhead at, 3406e has bigget than stock cam

Discussion in 'Trucks [ Eighteen Wheelers ]' started by bull hauler, Jun 29, 2012.

  1. Jun 29, 2012 #1
    bull hauler

    bull hauler Medium Load Member

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    3406 e 5ek motor, stock was 475, 600hp ecm upgrade, stage 1 pdi turbo, 600hp cam. Everyone is scratching their head as to what to set the overhead to since tolerances are tighter. Need help on this one.

    Also getting a thump noise feedback from the air cleaners, not sure what that is either, valve or cam issue?

    Thanks in advance
     
    bull hauler, Jun 29, 2012
    bull hauler, Jun 29, 2012
    #1
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  3. Jun 29, 2012 #2
    little cat 500

    little cat 500 Road Train Member

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    set the cam to stock spec's there the same on the lift the duration is diff
     
    little cat 500, Jun 29, 2012
    little cat 500, Jun 29, 2012
    #2
  4. Jun 29, 2012 #3
    bull hauler

    bull hauler Medium Load Member

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    k thanks, mechanic seems to think its tighter and he don't have the room to set as stock cam...maybe hes a guber. any thoughts on that?
     
    bull hauler, Jun 29, 2012
    bull hauler, Jun 29, 2012
    #3
  5. Jun 29, 2012 #4
    Superhauler

    Superhauler TEACHER OF MEN

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    intake .015,exhaust.030m jake depending on what type of jake you have around .033.
     
    Superhauler, Jun 29, 2012
    Superhauler, Jun 29, 2012
    #4
  7. Jun 29, 2012 #5
    bull hauler

    bull hauler Medium Load Member

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    Man thanks guys I called around and found a mechanic that has said what you guys say thanks again
     
    bull hauler, Jun 29, 2012
    bull hauler, Jun 29, 2012
    #5
  8. Jul 1, 2012 #6
    Mr. Haney

    Mr. Haney Road Train Member

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    Set the valve lash and jake brake to the same specs you used with the stock cam
     
    Mr. Haney, Jul 1, 2012
    Mr. Haney, Jul 1, 2012
    #6
    hmtruk Thanks this.
  9. Jul 2, 2012 #7
    Ryanr

    Ryanr Light Load Member

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    The thump noise u here through the air cleaners r the the intake and or exhaust valves r not closing properly.valve lash to tight.mine was doing the same and i ran the overhead saturday.its all good now no more thump thump noise.valves were tight.make sure u back off jake slaves when doing exhaust valves.good luck..
     
    Ryanr, Jul 2, 2012
    Ryanr, Jul 2, 2012
    #7
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