Hi Ram Itake Base - Carb LS1/LS2/LS6

The Holley Hi-Ram Intake Base for Carb LS1/LS2/LS6 is a purpose-built intake manifold engineered for naturally aspirated GM LS-series engine builds requiring maximum airflow and reliable fuel delivery. This base-only configuration ships with fuel rails included, providing the foundation for tunnel ram installations where vertical stacking and high-RPM cylinder charging are priorities. Constructed from aluminum in a natural finish, the Hi-Ram design delivers the flow characteristics demanded by serious engine builders and performance enthusiasts targeting peak horsepower extraction from LS platforms.

The LS-series architecture—covering LS1, LS2, and LS6 variants—represents one of the most versatile V8 platforms in modern performance applications. This Hi-Ram intake base accommodates the geometric demands of tunnel ram configurations, where intake runners are mounted vertically to maximize velocity and minimize fuel film separation at high load conditions. The aluminum construction delivers light weight without sacrificing rigidity, critical for applications where engine bay temperatures exceed stock specifications. Fuel rails included with this base unit integrate directly into the manifold structure, simplifying plumbing and reducing external component clutter. The natural aluminum finish provides a clean platform for custom detailing or coating to match specific build aesthetics.

This product is designed for engine builders, performance shops, and dedicated enthusiasts constructing carbureted LS applications where traditional manifold designs limit airflow potential. Tunnel ram intake systems excel in dedicated race engines, street-strip builds, and high-boost applications where traditional single-plane or dual-plane runners cannot support target cylinder pressures. The Hi-Ram configuration is particularly suited to applications where carburetor mounting height and intake velocity curves favor vertical runner orientation over conventional horizontal designs.

At 25.78 lbs and measuring 14.7 x 10.75 x 20.45 inches, this base unit requires verification of engine bay clearance and carburetor stack height before installation. Holley's Hi-Ram series has established itself as a proven solution within the LS-series performance community, particularly among builders prioritizing airflow optimization in carbureted configurations where fuel injection is not a design constraint.