GM LS Hi-Ram Intake System EFI 92mm LS1/2/6

The GM LS Hi-Ram Intake System EFI 92mm LS1/2/6 from Holley is a precision-engineered intake manifold designed for high-performance LS-series engine builds where maximum airflow and throttle response are non-negotiable. Built for serious enthusiasts and professional engine builders who demand consistent performance gains, this hi-ram design optimizes fuel distribution and air velocity across the cylinder heads. The 92mm throttle body flange ensures compatibility with modern EFI systems while maintaining OEM-quality fitment on GM LS1, LS2, and LS6 platforms.

Constructed from cast aluminum and finished in natural bare metal, this multi-port intake manifold leverages Holley's proven hi-ram runner geometry to extend effective intake tract length and boost mid-to-high RPM volumetric efficiency. The dual-plane design separates cylinder firing groups for superior torque characteristics across the power band, while the EFI-ready configuration accommodates fuel injectors without modification. Measuring 16.35 x 14.95 x 26.95 inches and weighing 38.43 lbs, the manifold integrates seamlessly into tight engine compartments while delivering the structural rigidity required for boost or naturally aspirated applications pushing peak horsepower.

This intake system serves engine builders, hot rod shops, and high-performance truck owners upgrading fuel delivery and induction efficiency on fourth and fifth-generation LS platforms. Direct bolt-on compatibility with LS1, LS2, and LS6 blocks eliminates custom fabrication, reducing installation complexity and ensuring repeatable results. Whether building a street-strip package or optimizing a stock platform for turbo or supercharger duty, the GM LS Hi-Ram Intake System EFI 92mm delivers the airflow capacity and manifold design professional installers trust for reliable, measurable performance gains.