Description
High-Performance Carbureted Intake Base. The Holley GM LS3/L92 Hi-Ram Carbureted Lower Intake Manifold base is engineered to optimize airflow for GM LS-family rectangular-port engines, including LS3 and L92-style applications. This lower manifold supports efficient air and fuel distribution as part of a complete carbureted intake system, enhancing engine performance and throttle response for racing or high-performance use.
Construction and Appearance. Constructed from durable cast aluminum with a natural finish, the manifold features rectangular ports designed for LS3/L92 cylinder heads. Its lightweight yet robust design ensures reliable performance for demanding builds.
Installation. Installation requires moderate mechanical skill with factory-style mounting flanges and O-ring gaskets designed for LS3/L92 compatibility. The removable top design facilitates assembly and maintenance without the need for modifications or custom drilling in most applications.
Warranty. This product is backed by a manufacturer’s limited 90-day warranty for peace of mind.
Application. This intake manifold base fits a range of GM LS-family engines using LS3/L92-style rectangular ports, including but not limited to the 07-08 6.2L Sierra 1500 Denali, providing versatile compatibility without the need for modifications.
Holley 300-213
CA Residents: WARNING: Cancer and Reproductive Harm
- Carbureted Base Only With Plenum-Top-Mounting Fabrication Flange Available
- Plenum Top Gasket Type 3/32” Round O-Ring Cord
- Port Size 2.49” Height By 1.21” Wide
- Mounting Flange Gasket Type Standard LS3 Molded O-Ring
- Runner Length 6.50 Inches As-Cast Runner Cross-Sectional Area Tapered From 4.25 To 2.77 Square Inches
- Basic Operating RPM Range 3500-8000 RPM
- Category Engine
- Construction Cast Aluminum
- Cylinder Head Port Shape Rectangle
- Deck Height 9.24 Inches
- EGR Port Not Included
- Emission Code 4
- Engine Compatibility GM LS3 And L92 Style Rectangular-Port Engines
- Fuel System Type Carbureted
- Grade Type Performance
- Plenum Finish Natural
- Product Type Intake Manifold Base
- Removable Top Or Lid Yes
- Runner Removal Not Supported
- Single Plane Intake Manifold Design
- Type Of Component Lower Manifold
- Vacuum Ports Included
- Manufacturer Warranty Limited 90 Day Warranty
- Fits Multiple GM LS-Family Engines Including The 07-08 6.2L Sierra 1500 Denali
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