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Thread: bbc pushrod question

  1. #1
    Member JUNIOR BUILDER
    Join Date
    Jan 2006
    Posts
    98

    bbc pushrod question

    i am beginning to assemble my new dart bbc.it is standard dech height 9.8 with new afr 335 heads and solid roller.iput the heads on with a couple bolts to get an idea of valve clearance and pushrod length,my problem is i put the pushrods out of my old motor and one of those plastic pushrod length checkers and its way off i need a pushrod about .380 longer is this possible.

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    May 2006
    Posts
    2,044
    Anytime you start out with a new combo rocker arm geometry has to be set, no matter what length you come up with.

    Mine are about .250 longer than stock.
    It's a little more envolved than that cheap plastic checking pushrod you got, it's best left to a competent machine shop.


    Heres a 'MUST' read on the subject.

    http://www.compcams.com/information/Products/Pushrods/
    ***IN GOD WE TRUST***

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
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    2,890
    For about $15.00 you can get an adjustable push rod from comp cams that will measure sm/blk and b/blk push rods and will help you set the proper geomerty.

    Zip.

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    Sep 2007
    Posts
    4,143
    http://www.mid-lift.com/intro-mid-lift.htm


    The only way to do it in my humble opinion.

    The valve train on a Big Chevy is a nightmare anyway...so you want to be sure it is correct.

  5. #5
    Senior Member RACING JUNKIE
    Join Date
    Dec 2008
    Location
    Sugar Hill, GA
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    1,365
    X all three above. After installing your heads w/gaskets, do the measuring.
    Dave
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triump of evil is for good men to do nothing" Edmund Burke


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