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Holley Single Plane 4150 Carbureted Intake Manifold

Carbureted Single Plane Intake Manifold Small Block Ford 289-347

Engine

Part # 300-277

Holley Single Plane 4150 Carbureted Intake Manifold

Estimated Ship Date: 06/06/2025
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Emissions

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

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The new single plane intake manifolds are designed to provide a broad RPM powerband for high-performance street/strip engine applications to a maximum engine speed of 7500 RPM. The carbureted manifold has a 4150 flange to work with all mechanical secondary square bore carburetors. These intake manifolds are designed to accept most stock hardware and accessory brackets, but offer performance features like better plenum and runner geometry for improved charge airflow. The isolated design of the air/fuel passages helps to increase charge air density and performance. The intake manifolds are designed for use with 289-347 cubic inch Small Block Ford engines with a 8.2" deck height.

Features:

  • Single plane design with isolated plenum for cooler charge air temperatures
  • 4150 square bore mounting flange
  • Power band: 2500-7500 RPM
  • Height: front 5.58”, rear 6.40”
  • Port size: 1.82” height, 1.04” width
  • Extra material allows for porting to 2.00” height, 1.20” width
  • Accessory ports under the carburetor in 1/8 NPT, 1/4 NPT and 3/8 NPT sizes

About Holley

Holley Performance Brands is the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, fuel injection, and fuel systems.

Basic Operating RPM Range2500-7500 R3
Brand Holley
Carburetor Studs IncludedNo
CategoryEngine
ColorNatural
ConstructionCast
EGR PortNo
Emission Code3
EngineFord Small Block
FinishSatin
Fuel Injectors IncludedNo
Fuel Rail(s) IncludedNo
Fuel System TypeCarbureted
Gasket Or Seal IncludedNo
Grade TypePerformance
Intake Port Gasket(s) IncludedNo
Manifold TypeSingle Plane
MaterialAluminum
Nitrous Bung(s) IncludedNo
Part TypeEngine Intake Manifold
Plenum FinishNatural
Product TypeIntake Manifold
Removable RunnersNo
RPM Power Band2500-7500
Single Or Dual Plane TypeSingle Plane
Sub CategoryCylinder Block Components
Throttle Body IncludedNo
UPC090127119310
Part Number300-277
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This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) 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


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

*Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

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