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Vehicle Info Needed300-226BK Hi-Ram Lower Manifold - GM LS1/LS2/LS6-Black
Ships on 09/14/2026
Lowest Price GuaranteeHolley 300-226BK Features:
The Holley GM LS1/LS2/LS6 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 LS1/LS2/LS6 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.- 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 – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Aggressive Cast Hi-Ram Intake Manifolds!
With the aggressive race-bred style of the Holley GM LS Modular Hi-Ram Intake Manifold, there is no hiding what you intend to do! This cast aluminum intake has been designed to be an alternative budget-minded solution to fabricated sheet-metal intakes on extreme-performance engines. Intended for use where hood clearance is not a factor this intake features straight 6-1/2 in. long runners with an overall height of just over 11 in. to produce max power on naturally-aspirated or forced-induction engines using high-flowing cylinder heads at 7,000 to 8,000 RPM!
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With a modular base design that allows you to use carbureted or EFI systems and choose or fabricate your choice of top plates, the Hi-Ram LS intake is perfect for any LS-powered drag race, muscle car, marine, off-road, sandrail, pulling truck or street-rod application!
