Product Summary

Carbureted Fuel System Type, Two Carburetor Quantity

    Key Specs

    MFG. Part #300-120
    Intake Manifold TypeDual Quad
    RPM Range1,500-7,500
    Material TypeAluminum

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    Holley 300-120 Details

    Holley Carbureted 2x4160 Mid Rise Dual Plane Intake Manifold, LS Gen 3 LS1/LS2/LS6 engines

    • The Holley GM LS1/LS2/LS6 2x4V dual-plane was designed in the tradition of the great dual Holley 4160 induction systems that competed on drag strips, in Trans-Am and at Lemans in the 1960™s. The technology of the LS pushrod engine is now mated with the im
    • The dual-plane equal-distribution layout produces great mid-range torque without compromising top end power. The LS engine architecture does not utilize an intake mounted water neck or distributor so it™s perfect for two Holley carburetors and this inta
    • Carbureted and EFI versions available
    • Power band from 1500-7000 rpm
    • Appropriate for any street/performance, muscle car, or street rod enthusiast
    • Cast aluminum construction
    • Intended for use on all GM LS Gen III engines equipped with LS1/LS2 style cathedral port cylinder heads
    • Carb Flange Center-To-Center: 8-5/8


    CARB Warning

    For race/ off road use only

    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. 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 300-120 Specifications

    MFG. Part #300-120
    Intake Manifold TypeDual Quad
    RPM Range1,500-7,500
    Material TypeAluminum
    Fuel System TypeCarbureted
    Carburetor QuantityTwo
    Carburetor Flange Type4-Barrel Square Bore
    Intake Section IncludedComplete
    Overall Height4.47"
    Bolt Hole Pattern5.160" x 5.625"
    GTIN Code090127670897