GM LS Hi-Ram Intake Sys. - 105mm EFI Throttle Bdy

The Holley GM LS Hi-Ram Intake System with 105mm EFI Throttle Body is a purpose-built intake manifold engineered for LS-series engine platforms demanding maximum airflow and EFI compatibility. This high-ram intake geometry delivers velocity-optimized fuel and air mixture to the cylinder head, enabling consistent power development across the RPM band. The 105mm throttle body flange accommodates modern EFI throttle bodies and mass airflow sensors, making this system ideal for street, bracket racing, and high-performance engine builds seeking superior volumetric efficiency.

Built from cast aluminum and finished in black ceramic coating, this multi-port intake manifold is compatible with LS3 and L92 cylinder head configurations and fits across the GM LS-series engine family. The hi-ram runner design creates positive pressure dynamics at higher engine speeds, supporting increased fuel delivery and ignition timing advances. At 39 pounds, the system delivers the structural integrity required for forced induction applications while maintaining a compact footprint. The black ceramic finish resists thermal degradation and provides corrosion protection in engine bay environments.

This intake is targeted at engine builders, performance enthusiasts, and automotive shops specializing in LS platform builds. Whether supporting naturally aspirated high-RPM applications or serving as the intake foundation for supercharged or turbocharged LS conversions, this manifold integrates with modern engine management systems. Buyers should verify cylinder head compatibility (LS3, L92, or equivalent port configuration) before ordering. The kit format includes all necessary gaskets and fastening hardware for direct bolt-on installation.

Holley remains the OEM supplier for many high-performance intake systems, and this hi-ram design reflects decades of street and competition engine development. The EFI throttle body flange represents the modern standard for LS builds, as traditional carbureted manifolds cannot accommodate contemporary engine management requirements. Builders upgrading from carbureted to fuel-injected LS platforms rely on this system to unlock the efficiency gains of modern ignition and fuel control systems.

Part number 300-117BK (SKU HLY300-117BK) ships complete with mounting gaskets, fasteners, and instructions. Dimensions are 15.75 x 15.25 x 30.5 inches.