Holley Dual Plane Intake – GM LS1/LS2/LS6

HOLLEY DUAL PLANE INTAKE – GM LS1/LS2/LS6

The HOLLEY DUAL PLANE INTAKE – GM LS1/LS2/LS6 is a dual plane carbureted intake manifold designed for GM LS engines. It delivers strong low-end torque with power up to 6,500 RPM, making it ideal for street applications using carburetors or throttle body EFI. The O-ring cylinder head mounting flange gaskets ensure an OEM-style seal and easy installation.

Key Features

• 1500-6500 RPM power band for broad torque curve
• 4150 square bore carburetor mounting flange
• Optimized runner layout with constant cross-sectional area
• Low carb flange height fits vehicles with minimal or no hood modifications
• Cast aluminum construction for light weight and consistent quality
• Includes Viton® O-ring mounting flange gaskets for OEM-style seal

Fitment

• GM LS1, LS2, and LS6 engines
• Carbureted or throttle body EFI street applications

Specifications

• Weight: 14.56 lbs
• Height (front): 5.07″ from front lifter valley cover to carb flange
• Height (rear): 6.14″ from rear lifter valley cover to carb flange
• Port size: 2.454″ height x 1.09″ width

Note: Verify compatibility with your specific LS engine and carburetor setup before ordering. Installation requires proper gasket sealing and carburetor tuning for optimal performance.