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Holley EFI  |  SKU: 300-263

Holley 300-263 Chevy Small Block V8 with L31 Vortec cylinder heads EFI SBC 4150 Single Plane Fuel Injection Intake Manifold

Small Block Chevrolet 262-400 cid engines equipped with 1996-2002 (L31) Vortec cylinder heads (non-EGR applications).

Regular price $1,369.00 NZD + GST
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⚠ Special Order Item — ships direct from supplier. No returns, exchanges, or cancellations once processed. Please allow 7–20 days shipping.

Description

Small Block Chevrolet 262-400 cid engines equipped with 1996-2002 (L31) Vortec cylinder heads (non-EGR applications).

Part Number: 300-263

The new single plane EFI (Electronic Fuel Injection) intake manifold is designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The manifold is designed to work with 4150 Style Throttle body EFI systems like the Holley 4150 style 112-587 and 112-588. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features; like an updated plenum divider area, a 1" shorter overall height than most single plane manifolds, and a choice of two distributor clamp locations. The isolated design of the air/fuel passages helps to increase charge air density and performance. The fuel injector bores have back-cut exits in the runners for better fuel atomization. This design points the injectors at an angle to match the intake runner airflow angle. The black coated fuel rails and rail bracket assortment are included with the manifold for any easy installation with the injectors that you choose to use for your combination. Fuel rail designed for maximum throttle lever clearance. Its low profile and single plane design are ideal for Sniper / Terminator TBI installations (dual planes aren't ideal for EFI) Vortec Intake fits most popular GM crate engines equipped with Vortec or Fast Burn Heads including HO engines (like 350 HO), SP Series Engines (SP 350) and ZZ Series Engines (ZZ6).

Features and Benefits

• Single plane design with isolated plenum to keep the air charge cooler
• Small Block Chevrolet 262-400 cid engines equipped with 1996-2002 (L31) Vortec cylinder heads (non-EGR applications)
• Height: Front 4.23", Rear 5.33"
• Port Size: 2.05” height 1.02" width
• Fuel injectors are not included
• Black coated fuel rails with bracket assortment allowing different height fuel injectors
• Lower throttle body mounting height to help with hood clearance
• Power band: 2500-7500 RPM
• 4150 square bore mounting flange to adapt most aftermarket throttle body designs
• Fuel rail designed for maximum throttle lever clearance

Modification to the valve covers may be required when this manifold is used with some types of cylinder heads._x000D_ The fuel rail inlet threads are 9/16-18 for a -6 port.

Specifications

  • Specifications
    Basic Operating RPM Range2500-7500
    BrandHolley EFI
    Carburetor FlangeSquare/4150
    Carburetor Quantity1
    Carburetor Studs IncludedNo
    CategoryEngine
    CNC PortedNo
    ColorNatural
    ConstructionCast Aluminum
    ConstructionCast
    Cylinder Head Port ShapeRectangle
    Deck Height9.025
    EGR PortNo
    Emission Code3
    EngineChevrolet Small Block Gen II (LT Based)
    Flange Style4150 Square Bore
    Front Maximum Height4.18
    Fuel Injectors IncludedNo
    Fuel Inlet9/16-18"
    Fuel Rail(s) IncludedYes
    Fuel System TypeEFI
    Gasket Or Seal IncludedNo
    Grade TypePerformance
    Intake Port Gasket(s) IncludedNo
    Manifold TypeHigh Rise
    MaterialAluminum
    Nitrous Bung(s) IncludedNo
    part typeEngine Intake Manifold
    Plenum FinishNatural
    Product TypeEFI Intake Manifold
    Rear Maximum Height5.33
    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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