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FAST 30857-8

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

FAST 30857-8


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FAST 30857-8 Precision-Flow High-Impedance Fuel Injectors GM LS3, L99, L76, LS7 $378.99
Precision-Flow High-Impedance Fuel Injectors
  • GM LS3, L99, L76, LS7
  • 85 lbs/hr
  • 8/pkg

  • Specifications:

    Wiring Harness Included
    Fuel Rail O-Ring Outside Diameter (in.)
    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.)
    Driver Type
    12V saturated circuit
    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

    30857-8 - FAST Precision-Flow Fuel Injectors for GM LS is rated 4.3 out of 5 by 3.
    Rated 5 out of 5 by from Great alternative to ID's Used these on my supercharged ls3 pushing around 610 to the wheels. So far no issues. About 1000 miles on them so far. Exact match to the ls3/lsa/ls9 injectors. No fitment issues, no harness adapters, no injector tips needed.
    Date published: 2016-08-18
    Rated 4 out of 5 by from Works but not the greatest for tuning I purchased these for my 2010 camaro ss supercharged. The injectors installed easy and had to be tuned . Brought to my local dyno tuner and he had a difficult time tuning it in. Would recommend a better injector for easier tuning but 4 stars because eveything worked out for me eventually with them and I dont mind them now. Not a bad product
    Date published: 2017-03-27
    Rated 4 out of 5 by from fast 85 lbs injectors Would be nice if they came with some flow data luckily I found a good tiner
    Date published: 2016-03-08
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    Some parts are not legal for use in California or other states with similar laws / regulations