Holley’s Hi-Ram intakes have been al the rage for the last few years, but as always, those engineers in Kentucky keep figuring out new ways to make more power. Enter their brand new Hi-Ram Lower Intake Manifolds, designed specifically for LS7 headed engines.
Official Release:
Holley LS7 HI-RAM Lower Manifolds
The Holley GM LS7 Modular HiāRam Intake Manifold is introduced as a cost effective alternative to fabricated sheetāmetal for highāperformance applications where induction system height is not limited. Coupling this HiāRam intake with the high flowing LS7 style cylinder heads has outstanding potential for N/A and forced induction applications at a budgetāminded cost.
Aggressive, bold, raceābred styling will make bad intentions clear for drag race, muscle car, marine, offāroad, sandrails, pulling trucks, track, streetārod applications and more!
ā¢ 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.
ā¢ Runner length and the tapered crossāsection designed to perform well for a wide range of engine configurations
ā¢ EFI fuel rails are machined for ā8AN Oāring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI HiāRam kits.
ā¢ Cast aluminum construction.
ā¢ Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000ā8000+RPM.
Features:
- 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 7000ā8000+RPM
- Port Size ā 2.49ā Height x 1.21ā Wide
- Mounting Flange Gasket Type ā Standard LS3 Molded O-Ring
- Plenum Top Gasket Type ā 3/32ā Round O-ring Cord
- Runner Length ā 6.29ā, As-Cast Runner Cross-Sectional Area ā Tapered 4.67 inĀ² to 2.84 inĀ²
Source :

Rick Seitz is the owner and founder of GMEFI Magazine, and has a true love and passion for all vehicles. When he isnāt tuning, testing, or competing with the brandās current crop of project vehicles, heās busy tinkering and planning the next modifications for his own cars.