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
• 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.
Features:
- Plenum Top Gasket Type – 3/32” Round O-ring Cord
- Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
- Port Size – 2.49” Height x 1.21” Wide
- Runner Length – 6.50”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.77 in²
- Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
- Height (Carbureted or EFI, 2x4V Top Mount & Blank) – 11.08” to the lifter valley cover flange on engine block.
Brand |
Holley |
Construction |
Cast |
Emission Code |
3 |
Engine |
GM LS3/L92 |
Finish |
Black |
Front Height |
11.08 inch |
Fuel System Type |
Carb |
Manifold Type |
Hi-Ram |
Product Type |
Manifold |
Rear Height |
11.08 inch |
RPM Power Band |
7000-8000 |
Warranty |
Limited 90 Day |
Part Number |
300-112BK |

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured Federally Certified vehicles
- 1967 and older Foreign manufactured vehicle
The following vehicles are considered Racing Use Only Vehicles:
- Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured Federally Certified vehicles
- 1968 and newer Foreign manufactured vehicle