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Thread: 4L80E Shifting Soft and Slow (tune attached)

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  1. December 26th, 2011 #1
    LastCall
    LastCall is offline
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    Default 4L80E Shifting Soft and Slow (tune attached)

    I finally got the truck together and trying to get the trans to shift firmer on the 1-2 shift. It is shifting slow and soft, and wanted to try to firm it up. It is 3200 Precision Industries stall and I have a Transgo HD-2 Shift Kit installed. I am running COS5.

    Any help would be greatly appreciated!!
    Attached Files Attached Files
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E
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