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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4.0 ★★★★★
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A
Verified Purchase
Amazon Customer
Chelsea, US
★★★★★ 5
"The Expresso cup that could"
Color: 01_ Silver 1pc
This little espresso cup is perfect in all ways. The stainless steel is great if you happen to drop it on the floor. Nice and shiny with a touch of elegance, it just brings a smile to your face. Great little cup for my espresso!
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Reviewed in the United States on February 12, 2026
E
Verified Purchase
Eric
Louisville, US
★★★★★ 5
Works well, measurement markings holding up
Color: 01_ Silver 1pc
This is a nice espresso shot cup. It's wide enough to catch both espresso streams coming down from the portafilter. I really like the measurement markings on the inside. I was concerned when I bought it that the markings might come off over time. I've had it for several months, and so far the marking are holding up well even when run through the dishwasher.
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Reviewed in the United States on January 6, 2026
A
Verified Purchase
Ashley
Birmingham, US
★★★★★ 5
Efficient
Color: 01_ Silver 1pc
This cup holds two shots and then some. It fits perfectly under to catch the espresso. The material is durable and it’s easy to clean. I recommend this!
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Reviewed in the United States on May 13, 2026
F
Verified Purchase
Family Guy
Boise, US
★★★★★ 5
Does what it's supposed to do
Color: 01_ Silver 1pc
Works well for a double espresso. Small but large enough to fit under two spouts.
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Reviewed in the United States on March 17, 2026
R
Verified Purchase
Rocky
Los Angeles, US
★★★★★ 5
Works
Color: 01_ Silver 1pc
Handy for measuring espresso and beans.
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Reviewed in the United States on May 18, 2026

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