Holley Single-Plane Intake Manifold - Engine Builder Magazine

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Holley Single-Plane Intake Manifold

The new Holley Single-Plane Race intake manifold is designed with maximum performance in mind and features a two-piece split design that provides access for all levels of porting and modification.

Engine Builder
By Engine Builder

The GM LS platform has become a staple in motorsport for its durability and reliable power delivery. Holley’s new race oriented manifold is intended for maximum effort combinations needing a major bump in induction airflow. With its split design, users have the ability to port and modify intake runners to best suit their combination.

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The new Holley Single-Plane Race intake manifold is designed with maximum performance in mind and features a two-piece split design that provides access for all levels of porting and modification. It utilizes shoulder bolt locators, and O-ring seal to ensure that disassembly/reassembly is simple and precise. Intended for cathedral head port LS engine combinations, offerings include carbureted and EFI versions in both black and natural finishes. 

The EFI manifold(s) feature AN-8 fuel rails with a 4500 Dominator style carb flange for 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. 

NOTE: 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 and max power at 7500-8000+ RPM.

For more information:
4500 Split Design Single Plane (Cathedral LS) – EFI4500 Split Design Single Plane (Cathedral LS) – Carb

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