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FAST Precision-Flow High-Impedance Fuel Injector GM LS3, L99, L76, LS7

FAST 30397-8


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FAST Precision-Flow High-Impedance Fuel Injector GM LS3, L99, L76, LS7 $259.99
Precision-Flow High-Impedance Fuel Injector
  • GM LS3, L99, L76, LS7
  • 39 lbs/hr
  • 1/pkg

  • Specifications:

    Wiring Harness Included
    Fuel Rail O-Ring Outside Diameter (in.)
    Injector Advertised Flow Rate
    Injector Advertised Flow Rate (lbs./hr.)
    Injector Plug Style
    Manifold O-Ring Outside Diameter (in.)
    O-Rings Included
    Sold as a set of 8
    Seat to Seat Height (in.)
    Manufacturer's Part Number:

    FAST's Precision-Flow High-Impedance Fuel Injectors for GM Gen IV engines are the highest flowing injectors available for these applications and are uniquely designed for direct installation into LS2 and LS3/LS7/L76/L92/L99-style engines. They deliver outstanding idle quality, unparalleled flow consistency and durability essential for high-performance EFI engines. Engineered to yield faster throttle response, reduced clogging and superior fuel atomization, Precision-Flow Fuel Injectors are manufactured to the tightest tolerances in the industry. Available in two different height configurations and a wide range of flow rates, the injectors are correctly sized and feature the correct EV6/USCAR connector, enabling a hassle-free plug-in operation.


    • Direct plug-in installation into LS applications
    • Outstanding idle quality, unparalleled flow consistency and durability
    • Quicker throttle response, less clogging, and superior fuel atomization
    • Sold individually or in sets of 4, 6, or 8
    • Available in 33 lbs/hr to 85 lbs/hr

    Are these comparable with my 2002 2500hd 6.0?

    Asked by: EarlD
    No, this is not designed to work with the LS1 engine.
    Answered by: Rusty B
    Date published: 2018-05-21

    Will these work with 2008 corvette wire harness? If I wanted to replace my old wires, what would you suggest?

    Asked by: Iguana
    Yes, these will work with your Corvette. If you are looking for plug wires we would recommend these - https://www.jegs.com/i/Taylor/895/79213/10002/-1
    Answered by: Rusty B
    Date published: 2018-05-14

    Will these work on 1977cadacllac 350 oldsmoble engine

    Asked by: Nate dog
    These are not compatible with the 77 Oldsmobile engine.
    Answered by: Jon Jegs Tech
    Date published: 2018-02-09

    Will these work on a 2014 camaro 1le?

    Asked by: Mike1124
    Yes, they will work on your Camaro.
    Answered by: Dean R
    Date published: 2017-12-12

    I'm doing an engine swap on my 2004 Chevy Tahoe Z71 4wd. I'm going from a 5.3L to 6.0L with 450hp . I would like to use my OE harnesses and fule rail. Would these injectors work and are they enough LB ? Thanks for your time and help.

    Asked by: G VELEZ 79
    The injectors flow rate will work for your application, but you will need to check the your intake and fuel rail will fit the 6.0L engine has a different style manifold.
    Answered by: Rusty B
    Date published: 2017-10-13

    Are these able to fit a 2013 GMC Sierra 5.3L with Flex Fuel? And will I gain much power?

    Asked by: Urby4699
    These should work for your application. They do not make more HP by themselves, they just do a better job of regulating fuel flow and that can lead to more HP.
    Answered by: Rusty B
    Date published: 2017-10-06

    Will these work with 2003 LQ4 6.0?

    Asked by: CharlieG
    As long as the ECU is able to drive this set of injectors.
    Answered by: Rusty B
    Date published: 2017-09-19

    Will these work on my 2001 Chevy Tahoe 5.3 Vortec

    Asked by: Aftdog82016
    • y_2018, m_7, d_21, h_23CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_8
    • loc_en_US, sid_10001_10001_1399566, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs
    Some parts are not legal for use in California or other states with similar laws / regulations