Holley Dual Plane Intake Manifold

• Holley Dual Plane Intake Manifold is designed to provide strong torque and quick throttle response for LS swap applications running either a carburetor or throttle body EFI system
• Engineered runner geometry with uniform cross-sectional sizing supports an effective operating range from approximately 1500 to 6500 RPM
• Dual-plane configuration promotes enhanced low-speed torque while sustaining solid midrange pull and upper-RPM power
• Designed to accept 4150-style square bore carburetors as well as certain throttle body EFI units
• Constructed from cast aluminum with controlled wall thickness to balance strength and reduced overall weight
• Features O-ring style flange seals with supplied Viton O-rings, a low-profile carb mounting flange, and a front-to-rear balanced layout to aid hood clearance and installation fitment
• Protected by a 90-Day Warranty

An LS swap brings together late model engine technology and classic hot rod appeal. If you prefer the simplicity of a carbureted setup while still expecting responsive acceleration and strong midrange power, a properly engineered intake manifold makes all the difference. For street focused combinations that value drivability and straightforward installation, the Holley Dual Plane Intake Manifold delivers balanced performance.

Designed with carefully proportioned runners and a uniform cross sectional area, this dual plane intake supports a wide powerband from approximately 1500 to 6500 RPM. The dual plane configuration promotes enhanced low speed torque while maintaining solid upper RPM output, making it well suited for street driven LS applications using a 4150 square bore carburetor or compatible throttle body EFI system. Constructed from cast aluminum, it offers reduced weight with consistent casting quality and wall thickness. O ring style flange seals are utilized, and Viton O rings are included to provide an OEM type sealing solution and simplified installation. Thoughtful port dimensions, a lowered carburetor flange height to aid hood clearance, and a balanced front to rear profile allow fitment in many LS swap vehicles with minimal adjustments.

Whether completing a new project or refining an existing build, this intake manifold provides reliable sealing, broad torque delivery, and user friendly installation. It is a practical upgrade for enthusiasts seeking everyday drivability combined with dependable top end performance. Backed by a 90-Day Warranty.