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Thread: xer273hr14

  1. #11
    Join Date
    Sep 2008
    Location
    Arizona/Utah
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    3,939
    Same ones that I have in my garage waiting to go onto my truck. I would recommend upgrading your fuel system a little bit. Lots of cam/headers guys running out of fuel up top. Even just a bigger fuel pump would do the trick. I am a big better safe than sorry advocate.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  2. #12
    Thanks for the tip. Shud I replace the main bolts heard they dont hold up. I know the cam is rated for 7000 but not really wanting to push it that hard. Was thinking 6500. Also any recommendations for fuel pump?

  3. #13
    Can I use 7.375 pushrods

  4. #14
    Join Date
    Jan 2008
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    8,031
    What are specs on the cam ?

  5. #15
    Join Date
    Jan 2008
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    8,031
    Nevermind I have that same cam going in a 5.3 as well lol and no u need 7.4

  6. #16
    Join Date
    Jan 2011
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    Mcalester,okla.
    Posts
    565
    Quote Originally Posted by CHEVROLADE View Post
    Nevermind I have that same cam going in a 5.3 as well lol and no u need 7.4
    +1 7.4

  7. #17
    Join Date
    Sep 2008
    Location
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    Quote Originally Posted by silveradorider04 View Post
    Thanks for the tip. Shud I replace the main bolts heard they dont hold up. I know the cam is rated for 7000 but not really wanting to push it that hard. Was thinking 6500. Also any recommendations for fuel pump?
    I wouldn't worry bout the main bolts, but a walbro 340 is pretty standard upgrade, unless you plan on bigger need for fuel.
    ECSB 2kSierra 2wd 4.8L-K&N-HPtuners-Calspeed LT's-Magnaflow-Tahoe20's-HankookRH06

    waiting to go in... 3.90s, 214/220cam

  8. #18
    Thanks and specs on cam are 224/230 duration, 581/592 lift, 114lsa

  9. #19
    Join Date
    Jan 2009
    Location
    Rockwall, TX
    Posts
    558
    Same cam I have but mine is a 112lsa

    1989 RCSS 5.3/4L60E swap
    - 224/230 .581.591 112lsa,
    - 3200 Stall
    - DJM 4/6 drop
    - Nelson Tuned

    Building the truck GM never did..

  10. #20
    Bet that 112 lsa sounds good

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