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Thread: Calculating IFR slope with no vacuum reference?

  1. #1
    Lifetime Member 67SS509's Avatar
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    Default Calculating IFR slope with no vacuum reference?

    I'm going to install a set of injectors in a 408 this weekend. They are rated 48.83lbs./hr @ 58.0 PSI. I will be using an aftermarket regulator set at 58.0PSI without a port for vacuum reference. Is there a way to calculate the slope for the IFR table and the value it starts at?
    2002 Chevy truck, SCSB 2WD, Stroked LS3 w/Big Mutha Thumper cam
    2002SS Camaro LS7/427 with stock suspension setup
    2012 Chevy truck, SCSB 2WD, Magnaflow exhaust + K&N

  2. #2
    Lifetime Member 5.7ute's Avatar
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    Use this spreadsheet.
    Attached Files Attached Files

  3. #3
    Lifetime Member 67SS509's Avatar
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    Quote Originally Posted by 5.7ute
    Use this spreadsheet.
    Thanks, that's exactly what a simple mind like mine needed. It's so simple a "Caveman could it"
    2002 Chevy truck, SCSB 2WD, Stroked LS3 w/Big Mutha Thumper cam
    2002SS Camaro LS7/427 with stock suspension setup
    2012 Chevy truck, SCSB 2WD, Magnaflow exhaust + K&N

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