SKU: 684123817

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

Sale price$472.48 Regular price$524.98
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Ships within 48 hours · Estimated delivery Nov 11 - Nov 16

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Description

Holley Hi-Ram Lower Manifold - GM LS1/LS2/LS6 - 300-227BKOverview: 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
  • Black

 

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)
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:
  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: 684123817

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Randa Turner
Natrona Heights, US
★★★★★ 5
Summer must have
Size: 2.5 Fl Oz (Pack of 1)
My family and I travelled to the beach this past summer. I have 2 very active kiddos and this roll on sunscreen was so helpful! It goes on quickly and has great protection.
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Reviewed in the United States on December 2, 2025
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JMom
Omaha, US
★★★★★ 5
Great sunscreen
Size: 2.5 Fl Oz (Pack of 1)
Fantastic. My kids love this product. I love that I can see where I applied, and then the blue tint completely disappears after rubbing it in. I just hope it doesn’t have some weird chemicals to accomplish this effect. It also doesn’t seem to burn their eyes.
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Reviewed in the United States on June 4, 2026
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Everett
Pawtucket, US
★★★★★ 3
Face sun screen
Size: 2.5 Fl Oz (Pack of 1)
This works well as far as UV protection although it does not rub in very well. It leaves your face white.
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Reviewed in the United States on April 1, 2026
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Lauren
Boise, US
★★★★★ 5
The best for sensitive skin and sensitive noses
Style: SPF 50, Size: 5 Fl Oz (Pack of 1)
This is the absolute best sunscreen I have found for my super reactive sensitive skin. I have never had any issues with this sunscreen and it prevents sunburn well. I am also super sensitive to smells and this doesn’t smell like anything to me. It gives a really pretty glow to your skin as an added bonus.
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Reviewed in the United States on April 13, 2026
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Nancy M.
Cuba, US
★★★★★ 5
Don't leave home without it!
Style: SPF 50, Size: 10 Fl Oz (Pack of 1)
This sunscreen has been a lifesaver for me. I'm an avid kayaker, have a very fair complexion and hate wearing hats, so I'd be toast (literally) without this. I'm also now allergic to fragrance and several commonly used preservatives, so to find that this sunscreen has no fragrance and none of the suspect additives was a joy. It goes on lightly, rubs in easily and seems to really hold up protecting my skin for 2-3 hour trips on the lake. I never leave home without it. The only drawback I have is that it's sometimes cumbersome, or difficult to get the top to line up correctly in order to spray it and it can be unwieldy trying to do this with one hand. I haven't found anything better, and really appreciate that it's available and not at an outrageous price either.
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Reviewed in the United States on March 13, 2026

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