300-274 EFI Hi-Ram Intake Manifold Base
InfoVehicle Info Needed
HOLLEYPART NUMBER: 510-300-274

300-274 EFI Hi-Ram Intake Manifold Base

$1,04995
ShippingShips on 09/09/2026
Lowest PriceLowest Price Guarantee

Manifold Bases
EFI Hi-Ram Intake Manifold Base
  • Small Block Ford 289-302
  • 1500-7000 RPM Range
  • Cast Aluminum
  • Satin Finish
  • For Off-Road Use Only

    Features:

    • EFI fuel rails are machined for -8 AN O-ring fittings with passages designed to accommodate high-flow fuel as well as dampen pressure pulsations in the fuel system
    • 3/32 in. round O-ring cord plenum top gasket
    • 2.000 x 1.190 in. Port Size

    Notes:

    • Requires a low profile distributor
    • Many Ford vehicle models were originally equipped with a heater core flow restrictor located at either the original heater hose fitting in the factory intake or inline in the inlet heater hose which protects the heater core from damage. If you are replacing the hoses between the engine and heater core or changing the factory fitting check to see if your application requires a flow restrictor. Failure to use the proper flow restrictor will likely result in a damaged or leaking heater core.

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    • EFI Hi-Ram for Ford Engines

      Holley EFI Hi-Ram Intake Manifolds are now available for Small Block Ford applications. These manifolds come with either a 95 mm or 105 mm Ford throttle body flange top. Redesigned water crossover passages allow room for distributor phasing while the intake runner length and tapered cross-section perform well for a wide range of engine configurations. Available in cast satin, silver, or black powder-coated finish for a unique look.

    Part TypeIntake Manifold
    Product LineHolley Ford Hi-Ram EFI Intake Manifolds
    BrandHOLLEY
    Package Height14.5
    Package Width16.25
    Package Length24.0
    Weight25.0 PG
    Part CategoryPerformance Parts
    Runners RemovableNo
    Hardware IncludedYes
    Fuel Rail MaterialAluminum
    Throttle Body IncludedNo
    Supplemental Bosses Cast-InNo
    Intake StyleHi-Ram
    Center Maximum Height8.39
    QuantitySold individually
    MaterialCast Aluminum
    Injectors IncludedNo
    Fuel Rails IncludedYes
    Engine Make/SizeFord Small Block
    Intake Section IncludedBase only
    Basic Operating Rpm Range1,500-7,000
    EgrNo
    Supplemental Bosses MachinedNo
    Runners IncludedYes
    Fuel Rail FinishBlack anodized
    Injection StyleMulti-port
    Supplemental Boss QuantityEight
    FinishSatin
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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