Product Summary

Chevy LS V8, Throttle Body Injection Style, Aluminum

    Key Specs

    MFG. Part #300-285
    Material TypeAluminum

    Need To Know

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    Holley 300-285 Details

    Holley now has fabricated aluminum plenum to options for those of us with limited room in the front of our engine bays. The 4 mm thick aluminum side mount plenum tops resemble the older Ford EFI manifolds and will allow you to mount the throttle body on the side. This will allow for easier fabrication for boosted applications or for just a different look on your Hi-Ram manifold. Fabricated aluminum construction designed to mount on our existing Hi-Ram manifold bases. Available in silver or black finish. Models for both LS and 86-95 Ford 5.0 Style throttle body patterns in 95mm and 105 mm sizes.

    • Designed for side-mounted throttle bodies
    • Allows for room for designing boosted application
    • 4 mm aluminum construction
    • 95 mm
    • LS throttle body fitment
    • Mounts to existing Hi-Ram manifold bases
    • Black


    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Holley 300-285 Specifications

    MFG. Part #300-285
    Material TypeAluminum
    Injection StyleThrottle Body
    Throttle Body Bore Size95mm
    Intake Section IncludedTop Section Only
    Throttle Body IncludedNo
    Injectors IncludedNo
    Aftermarket Fuel Rail RequiredNo
    Fuel Rails IncludedNo
    Runners IncludedNo
    Runners RemovableNo
    Supplemental Bosses Cast-InNo
    Supplemental Bosses MachinedNo
    Sold in QuantityEach
    GTIN Code090127067918