6-71/8-71 Blower Supercharger Intake Manifold Ford FE 390, 428
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SPEEDMASTERPART NUMBER: 746-1-149-001

6-71/8-71 Blower Supercharger Intake Manifold Ford FE 390, 428

$55000
ShippingShips on 09/21/2026
Lowest PriceLowest Price Guarantee

Ford
6-71/8-71 Blower Supercharger Intake Manifold
  • Ford FE 390, 428
  • Non-EGR
  • 5/16 in. Threaded Holes for Backfire Valve
  • 5-3/8 in. Manifold Height
  • 2 in. x 1-1/4 in. Intake Ports
  • Satin Finish

    This 6-71/8-71 Blower Supercharger Intake Manifold is designed for use with stock/OEM standard deck-height blocks.

    Features Include:

    • Cast-in Port for Pop-Off Valve
    • Fits Low-Rise FE Cylinder Heads
    • Clearance for Most Small Base Electronic Distributors (Excludes HEI)
    • Precision Fit (Gravity Die-Cast)
    • Raised Plenum
    • Threaded Water Ports
    • 5/16 in. Threaded Holes for Backfire Valve
    • 5-3/8 in. Manifold Height
    • 2 in. x 1-1/4 in. Intake Ports

    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

    • If you are looking for a manifold to use with your 8-71 or 6-71 supercharger, look no further than Speedmaster. These Speedmaster supercharger manifolds are aluminum constructed and suitable for competition or street use.

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      Rev up your engine’s power delivery with the Speedmaster 6-71/8-71 Blower Supercharger Intake Manifolds and Components—a precision-crafted foundation for serious performance gains. Designed to seamlessly integrate Roots-style superchargers into your build, this system ensures proper airflow, consistent boost distribution, and optimal fueling dynamics under high-pressure conditions.

      The heart of this setup is a durable, cast-aluminum intake manifold engineered for efficient airflow. Its robust design delivers even distribution of air to each cylinder, minimizing hotspots and ensuring smooth, consistent power across the rev range. Supplementing this, a polished carburetor adapter plate facilitates clean throttle response and ensures a reliable seal for your spacer or carburetor—offering both form and function in a race-inspired package.

      Whether you're building around a traditional small-block Chevy or a modern LS platform, this manifold serves as a solid backbone for your forced induction aspirations. It's a perfect match for projects targeting strong midrange torque and powerful top-end performance. Compatible with multiple Roots-style blower options, this assembly helps dial in a clean, efficient setup—particularly for those who value the refinement of an integrated ls blower manifold or the practicality of an sbc supercharger intake layout. For anyone seeking a well-engineered blower intake solution that marries craftsmanship with performance, this manifold earns your consideration.

      Upgrade your build with Speedmaster’s blower-ready components, and gain peace of mind knowing that every horsepower is delivered with precision and durability.

    Part TypeIntake Manifold
    Product LineSpeedmaster 6-71/8-71 Blower Supercharger Intake Manifolds and Components
    BrandSPEEDMASTER
    Package Height6.3
    Package Width16.3
    Package Length22.4
    Weight35.05 PG
    Part CategoryPerformance Parts
    Engine Block StyleStock/OEM standard deck
    UsageStreet/Strip
    ConstructionCast
    Intake MaterialAluminum
    QuantitySold individually
    Port Width1.25 in (31.8 mm)
    Cylinder Head TypeLow-Rise Ford FE
    Intake FinishSatin
    Engine Make/SizeFord FE 390, 428
    Port Height2 in (50.8 mm)
    EgrNo
    Intake Manifold Height5.375 in (136.525 mm)
    Vendor Part Number1-149-001
    Package Qty1
    Package TypeEA
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