Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6 - 300-227
SKU: 72630605196

Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6 - 300-227

Sale price$427.48 Regular price$474.98
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Description

Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6 - 300-227Overview: 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:

  • 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

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Brand Holley EFI
Color Natural
Construction Cast
Emission Code 3
Engine GM Small Block Gen III/IV (LS Based)
Fuel System Type EFI
Product Type Manifold
Type of Component Lower Manifold
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:
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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: 72630605196

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Olivia
Waukegan, US
★★★★★ 5
Miracle
Item Package Quantity: 1
I wish I had before and after photos, my feet are in much better shape after using this. I still need to work on them more but I ran out pretty quickly but my feet were dry af. I used to “shave” my feet once a month this is the power of foot filing in a stick. I will never foot file again. I need to find a way to make it last longer but I think I will not need as much now that my feet are in better shape. Iykyk, get this. It’s greasy as all hell but it’s easy to apply and you can do it over a towel and then put socks on immediately before bed. I wish it was a bigger stick but it is not too pricy so it’s worth it.
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Reviewed in the United States on February 17, 2026
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Myra
Whiting, US
★★★★★ 4
Good buy
Item Package Quantity: 1
Works right away. A good deal.
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Reviewed in the United States on February 22, 2026
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zuleika lara
Houston, US
★★★★★ 3
Pies suaves
Item Package Quantity: 1
Te ideará bien los pies
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Reviewed in the United States on May 26, 2026
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Jwan Arroyo
Los Angeles, US
★★★★★ 5
Sorpresa
Item Package Quantity: 1
Me encantó el tamaño pero el producto sencillamente espectacular de una sola aplicada suaviza el exceso de piel muerta ready para pulir y volver a poner la pomada
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Reviewed in the United States on May 12, 2026
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Kindle Customer
Phoenix, US
★★★★★ 5
Amazing how fast it works
Item Package Quantity: 1
This works so much better than the prescription cream I got from the doctor. I thought 40% was the highest available. Ease of use and it goes exactly where it's needed. Saw improvements after the second day of use.
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Reviewed in the United States on April 4, 2026

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