Holley 300-112 LS3/L92/L76, Hi-Ram Intake Manifold Base, Dual Carb, Dual Square Bore, Tunnel Ram, Aluminum, Natural, Each

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.

Features

• 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.
• 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 in. to 2.77 in.
• 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.

Notes: The front and rear height measurements are referencing the overall height with the top plate installed. 

Instructions

Instructions for Part# 300-112

Emissions Warning
Products sold on this website may not be legal for use on public roads or highways due to Environmental Protection Agency (EPA) restrictions or California Air Resources Board (CARB) emissions regulations. Federal and State regulations may restrict Product installation to pre-emissions regulation (Model Year 1974 or earlier) or to competition/racing vehicles used exclusively in
1) events organized by recognized bodies, authorizing permits for participating drivers.
2) racing event qualification, and3) practice associated with events.
Installation of such products, including driving racing vehicles to and from the track, may be considered illegal “tampering ” or as “defeat device”, and may result in federal and state penalties. It is the purchaser’s responsibility to ensure compliance with all applicable emissions laws, including California’s stricter standards.

Proposition 65 Warning:
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.