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Thread: Bigger Injectors

  1. #1
    Carb and Points!
    Join Date
    Apr 2016
    Age
    42
    Posts
    6

    Bigger Injectors

    So after successfully tuning my first chip for my '95 S10 4.3L I think I am ready to tackle another project.. I was told that because I have an L35 long block, with an LB4 intake that I should run the bigger injectors from a 5.7L (61 lb/hr). I just want to be sure I have the correct info..

    I need to change the injector flow rate (TBI lb/hr) from my current 46 to 61

    Also the injector offset vs. battery voltage table needs to be copied from the 5.7 bin over the 4.3

    Anything else I missed? I tried searching and there wasn't a clear cut topic or answer, so I created my own

  2. #2
    Fuel Injected!
    Join Date
    Feb 2015
    Location
    Ogden, UT
    Age
    40
    Posts
    139
    Looks like a good start to me.
    1990 Chevrolet K2500, RCLB, Blueprint 383 TBI (16197427 ECM / 61 lb/hr / 16 psi FP), NV4500, NP241C, 4.10

  3. #3
    Carb and Points!
    Join Date
    Apr 2016
    Age
    42
    Posts
    6
    Well everything went great as far as swapping the injectors, and burning the new chip with the values changed. Problem is, I still have poor throttle response and I thought it would have improved with the new injectors. I am going to be ordering the OBD cable soon so I can see what its doing in tunerpro; but is there hope in my near future??

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