HI-RAM LOWER MANIFOLD,EFI BASE,RAILS,GM LS7,BLACK

Brand New Holley EFI Hi-Ram Lower Intake Manifold Base, Black Finish, 3500-8000 RPM, Compatible with GM LS7 Engines (Part #300-229BK).

Holley GM LS7 Modular Hi-Ram Intake Manifold is a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS7 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost.

The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations.

EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. Cast aluminum construction. Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM.

NOTE: These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration.

Features: 

• Port Size - 2.49" Height x 1.21" Wide
• Mounting Flange Gasket Type - Standard LS3 Molded O-Ring
• Plenum Top Gasket Type - 3/32" Round O-ring Cord
• Runner Length - 6.29", As-Cast Runner Cross-Sectional Area - Tapered 4.67 in² to 2.84 in²

Specs: 

• Brand: Holley EFI
• Color/Construction: Black Cast
• Engine: GM LS7
• Fuel System Type: Carb
• Product Type: Lower Intake Manifold Base
• RPM Power Band: 3500-8000 RPM

You can view and download the complete assembly instruction booklet here.