Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6

Part # 300-294

Split-Design Race Intake Manifold- GM LS1/LS2/LS6 Cast Finish with Fuel Rails

Free Shipping - Lower 48 US States

In Stock

Advertised Price $779.95

$599.95

Save $180.00

Does it fit my engine?

The manifold with AN-8 fuel rails fits GM LS Gen III engines with cathedral port heads and has a 4500 Dominator style carb flange for carburetors, EFI throttle bodies, or EFI throttle body elbows, and is configured with a LS MAP sensor port along with other NPT plenum vacuum or air-temp sensor ports. The new Holley Single-Plane Race intake manifold is designed with maximum performance in mind. Featured is a two-piece split design that provides access for all levels of porting and modification. With shoulder bolt locators and O-ring seal, disassembly & reassembly is simple and precise. The LS Race single-plane intake manifold is designed for hi-performance/racing engine applications, 5.3 to 6.2+ liter displacements, N/A or with power adders. The large volume 4500 plenum and optimized runners provide airflow potential for Hi-RPM engines with max power at 7500-8000+ RPM.

Features:

Lighter than other split race intakes
Captured O-ring seals at head ports and plenum split
Vacuum Port options include (2) 1/8, (1) 1/4, and (1) 3/8, NPT ports at the carb flange
Maximum performance 4500 Dominator flange race design with hood clearance consideration
33 to 50% the price of other split race intakes
Two versions available: EFI type - Billet Fuel Rails and rail mounting hardware included, or Carbureted / Sniper EFI 4500 TBI style
Split feature making porting efforts easy!

About Holley

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

Barrels	4
Basic Operating RPM Range	2500-7500 RPM
Brand	Holley
Carburetor Flange	Dominator/4500
Carburetor Quantity	1
Carburetor Studs Included	No
Category	Engine
CNC Ported	No
Color	Silver
Construction	Cast
Cylinder Head Port Shape	Cathedral
Deck Height	9.24 IN
EGR Port	No
Emission Code	3
Engine	GM LS1/LS2/LS6
Flange Style	4500
Front Maximum Height	7.32 IN
Fuel Injectors Included	No
Fuel Rail(s) Included	No
Fuel System Type	EFI
Gasket Or Seal Included	No
Grade Type	Performance
Intake Port Gasket(s) Included	No
Manifold Type	Split Single Plane
Material	Aluminum
Nitrous Bung(s) Included	No
Part Type	Engine Intake Manifold
Plenum Finish	Natural
Product Type	Intake Manifold
Rear Maximum Height	7.32 IN
Removable Runners	No
Removable Top/Lid	No
Single Or Dual Plane Type	Single Plane
Sub Category	Cylinder Block Components
Throttle Body Bore Diameter	5
Throttle Body Gasket Included	No
Throttle Body Included	No
Vacuum Ports	Yes
Warranty	Manufacturer's Limited 90 Day Warranty
UPC	090127082201
Part Number	300-294

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

Instructions - 199R11472.pdf

Includes mounting bolts & washers. Also includes O-ring cylinder head mounting flange gaskets for an OEM style seal. Kit does not work with factory fuel rails. NOTE: The EFI versions of the LS HI-Ram intake manifold and fuel rail are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors.

Manufacturer's Limited 90 Day Warranty: See Details

*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.

Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6

Advertised Price $779.95

$599.95

Save $180.00

Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6

Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6

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