Hi Ram Intake Manifold Base EFI LS1/LS2/LS6

The Hi Ram Intake Manifold Base EFI LS1/LS2/LS6 from Holley is designed for serious engine builders and performance enthusiasts aiming to maximize the potential of their Gen III/IV small-block LS platform. This manifold serves as the foundation of a high-flow induction system, specifically engineered for EFI fuel injection on LS1, LS2, and LS6 cylinder heads. Whether for a street machine, track car, or crate engine swap, this component is built to deliver reliable power across the entire RPM range.

Constructed with precision casting and optimized runner geometry, the Hi Ram base manifold minimizes turbulence and enhances air distribution efficiency to each cylinder. The design effectively separates the intake charge into individual runners that taper toward the valve seat, reducing restrictions and improving velocity—key factors in achieving maximum volumetric efficiency for LS platforms. Its construction balances material thickness for durability while maintaining a manageable weight.

Installation is straightforward for builders familiar with LS engine architecture, as the base manifold bolts directly to LS1, LS2, and LS6 cylinder heads using factory hardware. This compatibility makes it an excellent choice for various performance applications, including both naturally aspirated and boosted setups. The Hi Ram Intake Manifold is an essential upgrade for those looking to enhance their engine's performance.