Hero image 0 of Holley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6, 0 of 11

Holley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6

Name: Holley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6
Brand: Holley
SKU: 391143808
Price: 819.95 USD
Availability: InStock

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Key item features

Race Design: Features a maximum performance 4500 Dominator flange race design, optimized for hood clearance and high-RPM engines (7500-8000+ RPM).
Split Construction: Incorporates a two-piece split design for easy porting and modification, with shoulder bolt locators and O-ring seals for simple disassembly and precise reassembly.
Engine Compatibility: Designed for GM LS Gen III engines with cathedral port heads, specifically compatible with LS1, LS2, and LS6 models.
Vacuum Ports: Includes multiple vacuum port options: two 1/8 NPT, one 1/4 NPT, and one 3/8 NPT ports at the carb flange, along with an LS MAP sensor port.
Fuel System: This EFI version comes with billet fuel rails and mounting hardware, supporting carburetors, EFI throttle bodies, or EFI throttle body elbows.
Optimized Airflow: The large volume 4500 plenum and optimized runners provide significant airflow potential for hi-performance/racing applications with 5.3 to 6.2+ liter displacements.

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Specs

Compatible cars
LS1, LS2, LS6
Vehicle make
GM
Vehicle model
LS1, LS2, LS6
Vehicle fitment type
Specific
Brand
Holley
Material
Cast Iron

Current price is $819.95

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About this item

Product details

Compatible with LS1/LS2/LS6 Black Finish with Fuel Rails;

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 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 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.;

Maximum performance 4500 Dominator flange race design with hood clearance consideration
Lighter than other split race intakes
Split feature making porting efforts easy!
33 to 50% the price of 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
Two versions available: EFI type - Billet Fuel Rails and rail mounting hardware included, or Carbureted / Sniper EFI 4500 TBI style

info:

We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it.

Specifications

Compatible cars

LS1, LS2, LS6

Vehicle make

Vehicle model

LS1, LS2, LS6

Vehicle fitment type

Specific

Warranty

Warranty information

Limited 90 Day

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Warnings

Warning Text

California Proposition 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.com

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Comparison Overview:
Product	Viewing this item Holley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6 current price $819.95 Holley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6	Holley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base current price $819.95 Holley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	Holley Performance 821062 Engine Intake Manifold current price $875.95 Holley Performance 821062 Engine Intake Manifold	Holley Performance 300-290BK EFI Intake Manifold current price $819.95 Holley Performance 300-290BK EFI Intake Manifold	Holley 300-295BK Single Plane 4500 Carbureted Split-Design Race Intake Manifold- GM LS1/LS2/LS6 current price $799.95 Holley 300-295BK Single Plane 4500 Carbureted Split-Design Race Intake Manifold- GM LS1/LS2/LS6	Holley Performance 300-121BK Engine Intake Manifold current price $799.95 Holley Performance 300-121BK Engine Intake Manifold	Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit current price $727.96 Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	Holley 300-940 Gen V LT Single Plane Intake Manifold - Fits Chevy LT current price $460.95 Holley 300-940 Gen V LT Single Plane Intake Manifold - Fits Chevy LT	Edelbrock Intake Manifold Chrysler Gen II 426-572 Hemi Dual Quad Single Plane for EFI current price $779.95 Edelbrock Intake Manifold Chrysler Gen II 426-572 Hemi Dual Quad Single Plane for EFI	Holley 300-931BK Single Plane Intake Manifold - Black current price $607.95 Holley 300-931BK Single Plane Intake Manifold - Black

Comparison Chart:
Compatible cars	LS1Holley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6	8.2 in. SBF FordHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	-Holley Performance 821062 Engine Intake Manifold	-Holley Performance 300-290BK EFI Intake Manifold	LS1/LS2/LS6Holley 300-295BK Single Plane 4500 Carbureted Split-Design Race Intake Manifold- GM LS1/LS2/LS6	GM LS Gen III enginesHolley Performance 300-121BK Engine Intake Manifold	-Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	Chevy LTHolley 300-940 Gen V LT Single Plane Intake Manifold - Fits Chevy LT	-Edelbrock Intake Manifold Chrysler Gen II 426-572 Hemi Dual Quad Single Plane for EFI	-Holley 300-931BK Single Plane Intake Manifold - Black
Vehicle make	GMHolley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6	FordHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	Ford, Chevrolet, RAMHolley Performance 821062 Engine Intake Manifold	GMHolley Performance 300-290BK EFI Intake Manifold	GMHolley 300-295BK Single Plane 4500 Carbureted Split-Design Race Intake Manifold- GM LS1/LS2/LS6	GMHolley Performance 300-121BK Engine Intake Manifold	GMHolley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	ChevyHolley 300-940 Gen V LT Single Plane Intake Manifold - Fits Chevy LT	ChryslerEdelbrock Intake Manifold Chrysler Gen II 426-572 Hemi Dual Quad Single Plane for EFI	ChryslerHolley 300-931BK Single Plane Intake Manifold - Black
Vehicle model	LS1Holley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6	SBFHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	-Holley Performance 821062 Engine Intake Manifold	LS Gen III or IVHolley Performance 300-290BK EFI Intake Manifold	LS1Holley 300-295BK Single Plane 4500 Carbureted Split-Design Race Intake Manifold- GM LS1/LS2/LS6	LS1Holley Performance 300-121BK Engine Intake Manifold	LS1/2/6Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	LTHolley 300-940 Gen V LT Single Plane Intake Manifold - Fits Chevy LT	75245Edelbrock Intake Manifold Chrysler Gen II 426-572 Hemi Dual Quad Single Plane for EFI	HemiHolley 300-931BK Single Plane Intake Manifold - Black
Vehicle fitment type	SpecificHolley 300-294BK Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6	SpecificHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	SpecificHolley Performance 821062 Engine Intake Manifold	SpecificHolley Performance 300-290BK EFI Intake Manifold	SpecificHolley 300-295BK Single Plane 4500 Carbureted Split-Design Race Intake Manifold- GM LS1/LS2/LS6	SpecificHolley Performance 300-121BK Engine Intake Manifold	SpecificHolley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	UniversalHolley 300-940 Gen V LT Single Plane Intake Manifold - Fits Chevy LT	SpecificEdelbrock Intake Manifold Chrysler Gen II 426-572 Hemi Dual Quad Single Plane for EFI	SpecificHolley 300-931BK Single Plane Intake Manifold - Black