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Thread: Valve Adj Help Needed

  1. #1

    Valve Adj Help Needed

    I have a SBC with a Crane roller cam #118411 (jegs) , track 1 heads , SRP 12:9/1 pistons and I need to adjust the valves but I can't find any specs . This motor has never been fired and PO thinks the adjustment should be 12int/18exh . I need some ideas

  2. #2
    Senior Member MASTER BUILDER
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    .012 in .022 ex with 1.5 rockers,add .001 lash for each .1 added rocker ratio-1,6 .013 in .023 ex.Use .018 ex for continuous high rpm,like round track.Bill.

  3. #3
    Senior Member RACING JUNKIE oldandtired's Avatar
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    Quote Originally Posted by wmeabates
    .012 in .022 ex with 1.5 rockers,add .001 lash for each .1 added rocker ratio-1,6 .013 in .023 ex.Use .018 ex for continuous high rpm,like round track.Bill.
    Bill, I have never seen any solid lifter or sollid roller camshaft with that much spread between the intake and exhaust lash. Most of the time, they are equal or + .002 exhaust.
    Just my experience.
    Dave
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triumph of evil is for good men to do nothing" Edmund Burke

  4. #4
    Senior Member MASTER BUILDER
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    Hi dave,This cam has a fast in. ramp,.012 lash 290 [email protected] 260 [email protected] .670 [email protected] ,the ex lobe is slower with [email protected]@.050 and only [email protected] like 2 differnt cams.I've had that same came for 20 yrs now and used it in 2 differnt motors,worked real well both times.I don't know how long Crane was making it before I got it but they were still making it untill they closed,same part# same grind#. Bill.

  5. #5
    Senior Member RACING JUNKIE oldandtired's Avatar
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    Bill, That makes sence now. Like picking seperate profiles from the CompCam book (one of my favorite reading materials).
    Dave

    P.S. I Hear S&S will soon be hiring in Florida again. Good news for a great name brand.
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triumph of evil is for good men to do nothing" Edmund Burke

  6. #6
    Thanks Bill , that's what I was looking for.


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