Product Summary

EFI Fuel System Type, Multi-port Injection Style

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    Key Specs

    Injection StyleMulti-port
    Intake Manifold TypeDual Plane
    Carburetor Flange Type4-Barrel Square Bore
    RPM Range1,500-7,000
    Material TypeAluminum
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    Holley 300-133 Details

    The Holley GM 2x4 dual plane manifold is designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans-Am at Lemans in the 1960's. The technology of the LS pushrod engine is now mated with the impressive multi-carb looks and performance of the muscle car era!

    • Power band from 1500-7000rpm
    • Perfect for any street/performance, muscle car or street rod enthusiast
    • Cast aluminum construction
    • Fits all GM LS Gen III or Gen IV engines equipped with LS3/L92 style rectangular port cylinder heads.
    • Dual plane design for equal distribution and great mid-range torque without comprimising top-end power

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    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 300-133 Specifications

    KEY SPECS
    MFG. Part #300-133
    BrandHolley
    Injection StyleMulti-port
    Intake Manifold TypeDual Plane
    Carburetor Flange Type4-Barrel Square Bore
    RPM Range1,500-7,000
    Material TypeAluminum
    GENERAL
    Fuel System TypeEFI
    Carburetor QuantityTwo
    FinishNatural
    EGRNo
    Cylinder Head ConfigurationRectangular Port
    Intake Section IncludedComplete
    Overall Height5.8"
    Bolt Hole Pattern5.160" x 5.625"
    Emission Code3
    Sold in QuantityEach
    GTIN Code090127688663

    Questions & Answers

    Fitment

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