SKU: 15445299660

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-227)

Sale price$907.65 Regular price$1008.50
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Description

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold (HO300-227)HO300 227 EFI HI RAM BASE ONLY LS1 LS2 Manifold Base Only Suit EFI Application Part Number: HO300 227 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

HO300-227 - EFI HI-RAM BASE ONLY LS1 LS2

Manifold Base Only Suit EFI Application

Part Number: HO300-227

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.
Features:
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

Shipping Notes
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Exchange/Return Notes
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SKU: 15445299660

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Christina Jackson
Fort Morgan, US
★★★★★ 5
Perfect for Creating Instant Privacy
Color: Black, Size: 88" W
I just set this up and it instantly transformed the space. It’s lightweight but stands securely, and the fabric panels look clean and modern. Super easy to fold and move around—perfect for creating privacy in a bedroom or home office without any permanent changes
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Reviewed in the United States on February 12, 2026
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Zhichao Wang
Pawtucket, US
★★★★★ 5
Lighter Than Expected — Perfect for My Garage Workspace!
I just received this room divider and haven’t had a chance to set it up yet, but I’m already impressed. It’s much lighter than I expected — I was worried it would be bulky and unstable, but that doesn’t seem to be the case at all. It feels easy to handle and still solid enough for what I need. I plan to use it in my garage to section off a small workspace, and it looks like it’s going to work perfectly!
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Reviewed in the United States on May 17, 2025
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Hls
Alexandria, US
★★★★★ 4
As expected
As expected
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Reviewed in the United States on January 8, 2026
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Sw
Bozeman, US
★★★★★ 5
Nice room divider
Product as described although it took me some time to assemble it. Sturdy, I used it to create a small space for myself as office to work from home in the living room. So that I no longer need to worry about my background when I am in zoom call when working remotely.
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Reviewed in the United States on April 22, 2025
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CLP
West Palm Beach, US
★★★★★ 3
Not easy to put together
It worked sort of. It was not easy to put together and has lots of gaps, but it did add a little division in the room.
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Reviewed in the United States on January 21, 2026

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