SKU: 8400489972

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold - Black (HO300-122BK)

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Description

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold - Black (HO300-122BK)HO300 122BK EFI HI RAM LS1 2 6, w 92MM T B Suit Single GM LS 92mm Throttle Bod Part Number: HO300 122BK 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

HO300-122BK - EFI HI-RAM LS1-2-6, w/92MM T/B

Suit Single GM LS 92mm Throttle Bod

Part Number: HO300-122BK

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 aluminium 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:
Base Plenum Top Mounting Flange Height - 8.42" to the lifter valley cover flange on engine block.
Total Height with 92/102mm EFI Plenum Top - 12.32" to the lifter valley cover flange on engine block.
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
Throttle Body Flange Location, with 92/102mm EFI Plenum Top : Height - 8.42" (from engine block lifter valley cover flange), Longitudinal Location - 3.84" (forward from engine block front flange), Angle - 25 deg. (down from vertical)
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: 8400489972

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Luxario
Natrona Heights, US
★★★★★ 5
Fits HP G2 dock
I have this mounting an HP-G2 Dock on the back of my Samsung 28inch 4K monitor. I used an additional flat plate to mount this to the left with the monitor arm going the plate and into the monitor. So good I bought a second one for my co worker so our desk don't have wires on them now.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2026
T
Verified Purchase
T Harris
Waukegan, US
★★★★★ 5
Otta sight-- outta mind
Great bracket!
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Reviewed in the United States on February 16, 2026
R
Verified Purchase
Randy Lowry
Bozeman, US
★★★★★ 5
HP G5 Dock Mount
Works as advertised! I purchased this as a test piece for our office supplied computers. It frees up space in the desk nd hides unsightly cords from view. I have it wall mounted behind the monitors and am very pleased thus far!
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Reviewed in the United States on December 14, 2025
A
Verified Purchase
Alyssa Lynne
Whiting, US
★★★★★ 5
Necessity
After the disorganization of my working space drove me crazy, I did an overhaul. This was one of the additions that I bought to not only give me more space but also allow for better cable management. I mounted mine under my desk, which let me contain the cable chaos beneath the desk.
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Reviewed in the United States on November 25, 2025
C
Verified Purchase
Cody
Houston, US
★★★★★ 5
Fits great.
Multiple iterations of this dock have wires coming out both the front and back, making it ugly on the desk and no way to hide wires well. Mounting under the desk with this helped a ton, looks way better. Perfect fit.
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Reviewed in the United States on December 12, 2025

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