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Thread: LB7 to LLY Head and Injector Swap

  1. #1
    New Member
    Join Date
    Sep 2017

    Default LB7 to LLY Head and Injector Swap

    I have a 2004 Silverado 2500HD LB7

    Just swapped the cylinder heads with LLY Heads along with LLY Fuel Injectors

    Anyone have a base tune file to get the truck running they would share or know what I need to adjust in the LB7 tune to make it run with the new LLY Injectors?

  2. #2
    Junior Member
    Join Date
    Sep 2015


    Rick fletes

    2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, Rick Fletes Dsp 5 on v2, 33x12.5 nitto at on 20 inch American Racing 20x10 wheels, Stage 5 Built Transmission by Mike Cole with triple disc billet low stall converter, 4 inch Injen cold air intake, Profab Intake Horn, Batmo Wheel, PPE Race Valve, Full EGR Removed w/ fed belt, 3.5 inch MBRP Downpipe, Full five inch MBRP Exhaust axle dump, lbz cp3 pump, Dual Platinum AGM Duralast, High Output Alternator, Cognito Pittman and idler w/ support kit, Cognito Upper Contol arms, Drilled and Slotted Rotors on all four Corners, FED Y Bridge, Shantz Custom Fab Traction Bars.

  3. #3
    New Member BATS66's Avatar
    Join Date
    May 2018


    I have done the same to my 2002. it runs but not well. also have a V2 and I am trying to find help where to program it to run well. Any help?
    2002 Silverado 3500, LB7/LLY FrankenMotor, Bi-Coastal 5th Wheeler and fixxer of whats broke! "If you don't succeed the first time, try a bigger hammer!" "No job is complete till blood is shed for it!"

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