300-275 Carbureted Hi-Ram Intake Manifold Base
InfoVehicle Info Needed
HOLLEYPART NUMBER: 510-300-275

300-275 Carbureted Hi-Ram Intake Manifold Base

$55295
ShippingShips on Sep 11, 2026
Lowest PriceLowest Price Guarantee

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

    Features:

    • 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

    • Hi-Ram Manifold Components for Ford Applications

      Holley Ford Hi-Ram Carbureted Intake Manifold Bases are designed with the same quality and attention to detail as the EFI hi-ram manifolds. Made from cast aluminum, these bases can be paired with Holly's line of modular intake top plates to integrate a carburetor of your choice. 

       

    Part TypeIntake Manifold
    Product LineHolley Ford Hi-Ram Carbureted Intake Manifold Bases
    BrandHOLLEY
    Package Height14.5
    Package Width16.25
    Package Length24.0
    Weight25.0 PG
    Part CategoryPerformance Parts
    Port Height2 in (50.8 mm)
    EgrNo
    Hardware IncludedYes
    Supplemental Bosses Cast-InNo
    Base FinishSatin
    Center Maximum Height (Mm)8.39
    Rpm Range1500-7000
    QuantitySold individually
    Port Width1.19 in (30.2 mm)
    Supplemental Boss QuantityEight
    Engine Make/SizeFord Small Block
    Base MaterialCast Aluminum
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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