Free shipping on orders over $100 Details

Holley EFI SBC 4150 Single Plane Fuel Injection Intake Manifold - Chevy Small Block V8

EFI Single Plane Manifold 1962-1986 262ci-400ci, 1987-later with Aluminum Heads

PART# 300-260

Be the first to write a review
$478.00   Suggested Retail
$429.95   Your Price
Free Shipping
In Stock  
Add to Wish List

Starting at $38 a month with Learn More


The new single plane EFI 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 flange Universal Throttle Bodies. 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. (Injectors are not included) The 300-260 intake manifolds are designed 4150 style Throttle Body EFI applications on 1957-86 262-400cid Small Block Chevrolet engines and SBC engines equipped with 1987-91 L98 aluminum Corvette cylinder heads (non-EGR applications). Also, these manifolds will work with any SBC engine equipped with aftermarket cylinder heads, as long as they have a standard port flange opening and mounting bolt locations. Also Available: 20-86 Throttle Cable Bracket, 20-87 Kickdown Cable Bracket


  • Single Plane Design with isolated Plenum
  • 4150 Square Bore Mounting Flange
  • Power band: 2500-7500 RPM
  • Height: Front 4.18", Rear 5.28"
  • Port Size: 1.92” height 1.20" width
  • Lower Throttle Body Mounting height to help with hood clearance.
  • Holley laser etched logos on the black coated fuel rails and bracket assortment are included so that you can install the injectors of your choice.
  • Fuel injectors are not included
  • Fuel rail designed for maximum throttle lever clearance.


BrandHolley EFI
Emission Code3
EngineChevrolet Small Block Gen I
Front Height4.18"
Fuel Inlet9/16-18"
Fuel System TypeEFI
Manifold TypeHigh Rise
Product TypeEFI Manifolds
Rear Height5.28"
RPM Power Band2500-7500
WarrantyLimited 90 Day
Part Number300-260



This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

Tech Resources

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

Warranty Information

Limited 90 Day: See Details
We Suggest
    Also Bought

        *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

        Some parts are not legal for use in California or other states with similar regulations.

         X  Sloppy Mechanics Sweepstakes
         X  Sloppy Mechanics Sweepstakes