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Thread: LB7/LLY Duramax crankshaft pattern

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    Lifetime Member GMPX's Avatar
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    Default LB7/LLY Duramax crankshaft pattern

    Hi All,

    I'm wondering if anybody has any data on the crankshaft pattern produced by the LB7 or LLY engine (not LBZ up).
    In my recent hard disk crash I lost some data that contained this info and of course I need it for something and I can't remember what it was.
    Below is the kind of data we need, it's for the LS1 engine, so either a photo of the Duramax crank itself showing the part that generates the pattern or any data on the pattern itself would be great, some GM training manuals might contain this.

    Thanks,
    Ross
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