Holley Ls3/L92 Single Plane Efi Intake Manifold

EFI LS Single Plane Intake Manifold designed for GM LS Gen III engines with LS3/L92 style rectangular port cylinder heads.

Key Features:

• Power band: 2500-7000 RPM


• Square bore flange (4150)


• Optimized runner layout and constant cross-sectional area for a broad torque curve, delivering peak vehicle performance between 2500-7000 RPM


• Minimum carb flange height for easy fitment in vehicles with minimal hood modifications


• Cast aluminum construction, ideal for centrifugal blower, turbocharged, or NOS mild power adder applications


• Efficient casting design ensures lightweight, consistent wall thicknesses, and improved casting quality


• Weight: 11.5 lbs.


• Height (front): 5.417" to the lifter valley cover flange at the engine block front flange and bellhousing flange


• Port size: 2.50" height x 1.15" wide


• Includes Viton® O-ring intake to cylinder head gaskets (Viton® is a registered trademark of DuPont Performance Elastomers)


• Note: This manifold is not compatible with factory fuel rails; use Holley Fuel Rail Kit 534-218.