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Thread: Obs swapped 5.3 from a 2001 GMC Yukon need help tuning

  1. #1
    Potential Tuner
    Join Date
    Feb 2021
    Posts
    2

    Obs swapped 5.3 from a 2001 GMC Yukon need help tuning

    The 5.3 has a btr stage 4 cam Duration 224/230, Lift .553/.547
    Long tube headers
    862 heads
    Ported throttle body
    Dual valve springs
    Everything else is stock
    Does have a upgraded stall but not sure how big
    The 5.3 use to have a stage 2 cam but upgraded to a stage 4
    Here is the tune file
    Attached Files Attached Files