Holley 300-277 SBF 289-347 Single Plane Carbureted Intake

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Single plane design with isolated plenum for cooler charge air temperatures
4150 square bore mounting flange
Power band: 2500-7500 RPM

$375.95

Factory Shipped

This part will be shipped by the manufacturer. We estimate this item will ship on or before October 2nd.

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Product Summary

289, 327, 347, Carbureted Fuel System Type, Aluminum

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

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Key Specs

MFG. Part #	300-277
Brand	Holley
Intake Manifold Type	Single Plane
RPM Range	2,500-7,500
Material Type	Aluminum

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Holley 300-277 Details

Holley 4150 Single Plane Carbureted Intake Manifold Small Block Ford 289-347

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

Charts

Installation Instructions (PDF)

Guides & Documents

Intake Manifolds Instruction Sheet (425300277)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA Prop 65

CARB warning

Holley 300-277 Specifications

KEY SPECS
MFG. Part #	300-277
Brand	Holley
Intake Manifold Type	Single Plane
RPM Range	2,500-7,500
Material Type	Aluminum

GENERAL
Fuel System Type	Carbureted
Carburetor Flange Type	4-Barrel Square Bore
Finish	Satin
Color	Natural
Intake Section Included	Complete
Throttle Body Included	No
Injectors Included	No
Aftermarket Fuel Rail Required	No
Fuel Rails Included	No
Hardware Included	No
Gaskets Included	No
Mounted Height	6.4"
Port Height	1.82"
Port Width	1.04"
Runners Included	Yes
Runners Removable	No
Emission Code	3
Sold in Quantity	Each
GTIN Code	090127119310