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Thread: LB7 connecting rods to LML?

  1. #1
    Join Date
    Dec 2023
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    Question LB7 connecting rods to LML?

    Are the LML rods non fractured?, is this a good way to go? Thanks, newbie here.

  2. #2
    Join Date
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    Default

    I guess first I'd look to understand your goals? To me using any factory connecting rod is an incremental (minor) step up and if you want to make something truly durable I would look to aftermarket like Carillo for rods and be done with it.

    Personally, I'd suggest sticking to the 500 HP range, use this power level sparingly, and keep the bottom end stock because the next step cost $10's of thousands.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
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    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
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    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
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  3. #3
    Join Date
    Feb 2000
    Location
    Montana
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    11,483

    Question

    Quote Originally Posted by Kennedy View Post
    I guess first I'd look to understand your goals? To me using any factory connecting rod is an incremental (minor) step up and if you want to make something truly durable I would look to aftermarket like Carillo for rods and be done with it.

    Personally, I'd suggest sticking to the 500 HP range, use this power level sparingly, and keep the bottom end stock because the next step cost $10's of thousands.
    Is it your sense that adding power... big power, increases the potential for a crankshaft dowel-pin or crankshaft failure? Do the aftermarket harmonic dampers help to solve that? Thx.

  4. #4
    Join Date
    Mar 2000
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    Default

    The connecting rods seem to bend first. I don't know that there is any issue with the crank gear. I've been told it is an absolute pain to remove. I run the ATI damper on my LB7. It's a tight press fit and not a slip fit like OE so it holds better.

    The camshaft pin is a potential issue though so keying the cam is a good idea.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

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