SKU: 97865352339

Holley Hi-Ram Lower Manifold - GM LS7- Black - 300-229BK

Sale price$427.48 Regular price$474.98
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Description

Holley Hi-Ram Lower Manifold - GM LS7- Black - 300-229BKOverview: The Holley GM LS7 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 LS7 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

Overview:

The Holley GM LS7 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 LS7 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 – 6.29”, As-Cast Runner Cross-Sectional Area – Tapered 4.67 in² to 2.84 in²

 

Application:

Year Make Model Submodel Engine Size
Universal

 

Specs:

Brand Holley EFI
Color Black
Construction Cast
Emission Code 3
Engine GM LS7
Fuel System Type EFI
Product Type Manifold
Type of Component Lower Manifold
Warranty Limited 90 Day
Shipping Notes
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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]
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SKU: 97865352339

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4.6 ★★★★★
Based on 22 reviews
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Los Angeles, US
★★★★★ 4
If the set screws were white the shelves would be perfect.
Color: C. White - Modern Minimalist Style, Number Of Shelves: 3, Size: 15.7inches
I'd give 4 1/2 if there was one. The shelves thwmself are nice I just don't like the visible little black set screws. The shelves themself look great and are not wobbly at all if you install correctly. I purposely installed the bracket upside down because of the little black setting screws; I didnt want them showing because the shelves are above eye level and the screws are black and I didn't want them showing. But that made the shelf lean amd wobbly so I turned them back over the way they are supposed to be and that made them level and sturdy. I guess I'll paint the little screws.
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Reviewed in the United States on January 21, 2026
O
Verified Purchase
Onahunch
Cuba, US
★★★★★ 5
MoreThan Just A Shelf
Color: 1set, Size: 24inch
Absolutely love this Helsin 3-Tier Industrial Pipe Shelf! It completely transformed a blank wall in my home office into a stylish, functional display area that’s equal parts rustic charm and industrial cool. The real wood shelves are thick, sturdy, and beautifully finished with that perfect rustic vibe. Combined with the heavy-duty black metal piping, this unit feels rock solid once mounted. Zero wobble. I was honestly surprised at how simple the installation was. All the parts were included, instructions were clear, and it went up faster than expected. I had it securely mounted to studs in under 10 minutes. This shelf works just as well for books, plants, décor, or collectibles. I’ve got a mix of framed photos, succulents, and vintage finds on mine, and it handles the weight with no issue. It gives vertical storage without eating up floor space, and the combination of rustic wood and industrial pipe makes it a true statement piece. I’ve had multiple compliments already! I could see this shelf fitting perfectly in living rooms, kitchens, offices, or even bathrooms. It’s compact enough for smaller spaces but bold enough to stand out in larger rooms. Highly recommended!
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Reviewed in the United States on August 5, 2025
J
Verified Purchase
Jennifer Houben
Houston, US
★★★★★ 5
Great product!
Color: 1set, Size: 24inch, Color: 1set, Size: 24inch
I love this shelf so much I bought it for 2 rooms. Stylish easy to put together and hang on the wall. Shelving is durable metal is strong. Nicely colored wood shelves. Seems to be holding up well in the humidity of the bathroom.
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Reviewed in the United States on April 12, 2026
W
Verified Purchase
Whitney
Grantham, US
★★★★★ 5
Great shelf
Color: 1set, Size: 32inch, Color: 1set, Size: 32inch
Looked great in home office. Easy to assemble and not too difficult to install. Hardest part was measuring and getting two shelf sets to align properly on the wall but would have been super easy with just one. Will need a drill for the anchors.
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Reviewed in the United States on May 30, 2026
D
Verified Purchase
David Hester
Boise, US
★★★★★ 5
Quality
Color: 1set, Size: 24inch
Very easy to assemble and mount very stable and good looking 100% recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026

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