Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6 300-227BK
Intake Manifold Base
LS1/LS2/LS6 Cathedral Port EFI Base Only-Black
The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as 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 LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! 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.
- 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 6.58, As-Cast Runner Cross-Sectional Area Tapered 4.25 in² to 2.53 in²
These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration.
- Holley EFI
- Intake Manifolds - Chevy - LS
- Item Requires Shipping
- W14.7500” x H10.0000” x L20.7500”
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