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Holley  |  SKU: 300-129

Holley 300-129 Dual Plane Carbureted Intake - GM LS3/L92

All GM LS Gen III or IV engines equipped with LS3/LS92 style rectangular port cylinder heads

Regular price $949.90 NZD + GST
Shipping calculated at checkout.
⚠ Special Order Item — ships direct from supplier. No returns, exchanges, or cancellations once processed. Please allow 7–20 days shipping.

Description

All GM LS Gen III or IV engines equipped with LS3/LS92 style rectangular port cylinder heads

Part Number: 300-129

Got an LS engine to get running? Nothing is easier than bolting on a carburetor. Holley's dual plane carbureted intake for GM's LS engines will help you get on the streets quick! Its dual plane design makes it perfect for low end torque, yet it still pulls all the way to 6,500 RPM! Our O-ring cylinder head mounting flange gaskets provide an OEM style seal and make installation a snap. Bolt one on today!

Features and Benefits

• Mounting flange gasket type - O-ring
• Optimized runner layout and constant cross sectional area provide a broad torque curve
• Port size - 2.454" height x 1.09" wide
• 1500-6500 RPM power band
• Includes Viton® O-rings - Viton® is a registered trademark of DuPont Performance Elastomers
• Weighs 14.56 lbs.
• Height (front) - 5.07" from front lifter valley cover to carb mounting flange
• 4150 square bore carb mounting flange
• Minimum carb flange height means it fits in vehicles with minimal or no hood modifications
• Height (rear) - 6.14" from rear lifter valley cover to carb mounting flange
• Great for carbureted or throttle body EFI street applications
• Cast aluminum construction and efficient casting design for light weight, consistent wall thicknesses and improved casting quality

Fits all GM LS Gen III or IV engines equipped with LS3/LS92 style rectangular port cylinder heads. Includes mounting bolts & washers. NOTE: These Dual-Plane Intake Manifolds are NOT legal for sale or use on engines with pollution controlled equipment.

Specifications

  • Specifications
    Basic Operating RPM Range1500-6500
    BrandHolley
    Carburetor FlangeSquare/4150
    Carburetor Quantity1
    Carburetor Studs IncludedNo
    CategoryEngine
    CNC PortedNo
    ColorNatural
    ConstructionCast
    Cylinder Head Port ShapeRectangle
    Deck Height9.24
    EGR PortNo
    Emission Code4
    EngineGM LS3/L92
    Flange Style4150 Square Bore
    Front Maximum Height5.07
    Fuel Injectors IncludedNo
    Fuel Rail(s) IncludedNo
    Fuel System TypeCarb
    Gasket Or Seal IncludedNo
    Grade TypePerformance
    Intake Port Gasket(s) IncludedNo
    Manifold TypeDual Plane
    MaterialAluminum
    Nitrous Bung(s) IncludedNo
    part typeEngine Intake Manifold
    Plenum FinishNatural
    Product TypeIntake Manifold
    Rear Maximum Height6.14
    Removable RunnersNo
    Removable Top/LidNo
    Single Or Dual Plane TypeSingle Plane
    Sub CategoryCylinder Block Components
    Throttle Body Bore Diameter3.6
    Throttle Body Gasket IncludedNo
    Throttle Body IncludedNo
    Vacuum PortsYes
    WarningCalifornia Proposition 65
    WarrantyManufacturer's Limited 90 Day Warranty
  • Instructions

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