SKU: 44351327302

Holley LS Hi-Ram EFI Manifold - Black - 300-123BK

Sale price$562.48 Regular price$624.98
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Description

Holley LS Hi-Ram EFI Manifold - Black - 300-123BKOverview: 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

Overview:

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:

  • Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
  • Total Height with 92/105mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
  • Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
  • Throttle Body Flange Location, with 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)
  • 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

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Brand Holley EFI
Color Black
Construction Cast
Emission Code 3
Engine GM Small Block Gen III/IV (LS Based)
Finish Black
Front Height 12.32 inch
Fuel System Type EFI
Manifold Type Hi-Ram
Product Type Manifold
Rear Height 11.00 inch
RPM Power Band 1500-7000
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 44351327302

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★★★★★ 5
This stuff smells great I definitely will be ordering more
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Reviewed in the United States on May 14, 2026
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Mohammad Khan
Cuba, US
★★★★★ 5
Good scent and sizable soap bar
I bought the 6-pack for everyday use and really like the fresh, clean scents — nothing overpowering. These bars lather nicely and rinse off without leaving a greasy film. Gentle enough to use on my face, body, and hands without irritation. Each 5.3 oz bar lasts a good while — better than many other “gentle” soaps I’ve tried. Packaging arrived neat and intact, perfect for gifting or sharing. Great value for the set and the scent variety keeps shower time pleasant.
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Reviewed in the United States on February 4, 2026
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Amazon Customer
Houston, US
★★★★★ 4
Buen producto
6 jabones en barra para hombre de muy buena calidad y bonito aroma. Yo voy a poner uno en las bolsas de recuerdo y dulces para el festejo de 21 años de mi hija . Para los chicos un jabón en barra y para las chicas una crema de manos y un espejo!
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Carnegie, US
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Solid Soap Set for Men
This natural men’s bar soap set has quickly become a daily favorite after a few uses. The fresh, clean scents are subtle and not overpowering, giving a nice masculine smell without lingering too strong. Bars lathers easily and feels gentle on the skin, making it great for face, body, and hands with no dryness afterward. The bars are generously sized and seem to last a long time.
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MARIE P.
Lowell, US
★★★★★ 5
Keeps the bees and bugs out of beverages
Great . I have used on several different brands of drinks and they work nice to cover your drink once opened. They don’t prevent the spills but reduce the spill !! And the slide into your shirt or jeans pocket great!
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