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Thread: Z06 Comp Push Rod

  1. #1
    Join Date
    Sep 2004
    Posts
    665
    There has been alot of discussion about what lengh push rods to use with the Z06 cam in the truck motor.

    It seems like the consensus is around a 7.425 or 7.435. I can't find any that lengh. Where are they available?

    No more trucks, but this is what I used to have. 2000 GMC Sierra, 6.0L-LQ4, Built 4L60, LS6 Cam, The Other Guys Headers, 3 inch exhaust and 7 chamber flowmaster, 43lb injectors, Nelson Tuning, Drop - 3/4 McGaughys Spindles, Bell Tech Shackles & Hangers. Best time 13.59 @ 106

  2. #2
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Post over in the parts wanted section of LS1Tech. There is a dealer there that has a dozen sets of the 7.425" pushrods. I am going to be converting to the 7.450" on mine before long since the 7.400" make mine sound like it has solid lifters. CLACK CLACK CLACK CLACK


    BTW, I have a Comp Cam, not LS6.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  3. #3
    Join Date
    Jan 2005
    Location
    Conway, AR
    Posts
    1,353
    I have the LS6 and its a bit of a noisy valvetrain. I'd go for the 7.425", i'll be doing this as soon as I build the funds, I know its a cheap mod, but i just bought a jet ski and I gotta get it fixed the way I want it first
    2009 Silverado, HPTuners, all stock.

  4. #4
    Join Date
    Sep 2005
    Posts
    314
    I looked into this before I installed my cam. I believe the corect lengh for us is 7.427 Witch was not available at the time. I dont know if there is one or not now as this was a while ago?? I ended up going with Thunder Racing 7.4 pushrods. They do measure 7.415 as you might have read. That will only put you out 0.012 from perfect. I have no noise nor problems myself.

  5. #5
    Join Date
    Jan 2005
    Location
    Conway, AR
    Posts
    1,353
    This shit is the same reason I could barely pass geometry!
    2009 Silverado, HPTuners, all stock.

  6. #6
    Join Date
    Sep 2005
    Posts
    314
    Yea I know every time I look into it I second guess myself. Another thing if we go with a shorter or longer pushrod, do you lose lift? I have seen bolth sides, and 4 years later who really knows what to do?

  7. #7
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    If the pushrod is too short you lose lift.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

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