Single Plane EFI 4500 Split-Design Race Intake Manifold- GM LS1/LS2/LS6 Black Finish with Fuel Rails Holley

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.

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.

Features and Benefits:

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

Associated Comments:

• 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.

Details:

• Barrel Quantity: 4.0
• Basic Operating RPM Range: 2500-7500 RPM
• Cnc Ported: No
• Carburetor Flange: Dominator/4500
• Carburetor Quantity: 1.0
• Carburetor Studs Included: No
• Color: Black
• Construction: Cast
• Cylinder Head Port Shape: Cathedral
• Deck Height: 9.24 Inch
• Egr Port: No
• Engine: Gm LS1/LS2/LS6
• Flange Style: 4500
• Front Maximum Height: 7.32 Inch
• 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
• Plenum Finish: Black
• Rear Maximum Height: 7.32 Inch
• Removable Runners: No
• Removable Top/Lid: No
• Single Or Dual Plane Type: Single Plane
• Throttle Body Bore Diameter: 5
• Throttle Body Gasket Included: No
• Throttle Body Included: No
• Vacuum Ports: Yes
• Warranty: Manufacturer's Limited 90 Day Warranty