Holley 300-115 EFI Hi-Ram Intake, LS3/L92, 2 x 4150

The Holley GM LS3/L92 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS3/L92 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations EFI fuel rails are machined for -8AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. Cast aluminum construction. Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM.

Height (Carbureted or EFI, 2x4V Top Mount & Blank) – 11.08 to the lifter valley cover flange on engine block.
Base Plenum Top Mounting Flange Height – 8.42 to the lifter valley cover flange on engine block.
Port Size – 2.49 Height x 1.21 Wide
Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
Plenum Top Gasket Type – 3/32 Round O-ring Cord
Runner Length – 6.50 , As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.77 in²