SKU: 75517043616

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

Sale price$479.68 Regular price$532.98
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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19

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Description

Holley Hi-Ram Lower Manifold - GM LS7 - 300-229Overview: 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 Natural
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
  • 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: 75517043616

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DON FRYER
Grantham, US
★★★★★ 5
really easy to use i will keep use it!
work really well very please
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Reviewed in the United States on June 11, 2026
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David C.
Omaha, US
★★★★★ 5
Better than expected
Color: Black, Size: 1 Pack
I recently bought this chair and have been thoroughly impressed with its overall performance. From the moment it arrived, the quality was clear. The construction feels sturdy, and the materials used suggest durability that inspires confidence for long-term use. The chairs fit perfectly into my space, offering both comfort and a sleek, professional look. Their weight strikes the right balance: light enough to move easily but heavy enough to feel stable and secure. Additionally, their durability has surpassed expectations, showing no signs of wear even with regular use. From a value perspective, these chairs are a great investment. They offer the high-end feel and reliability of more expensive options without the high price tag. Overall, I highly recommend these chairs to anyone looking for a professional, durable, and budget-friendly seating option.
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Reviewed in the United States on May 21, 2026
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Tom Palermo
Carnegie, US
★★★★★ 5
Wheels role, comfortable, easy to assemble and s
Color: Black, Size: 1 Pack
This has rolling wheels and if I could put it together Anyone can. It fits me fine (250 pounds) the seat is comfortable. They gave me all of the tools (1 tool) needed. Directions were pictures and words that are large enough for me to read. I liked the lower cost and the shipping packaging was great. I’m too big to even try the recliner. I’m sure it would do it but I have had some bad experiences in the past. Don’t be fooled by reviews that state the wheels don’t move. They do. I would buy this chair again
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Reviewed in the United States on May 14, 2026
K
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Kenishia Buck
Birmingham, US
★★★★★ 4
Office Chair
Color: Grey, Size: 1
This chair is the perfect size for a small space however it was a nightmare to assemble.! The screws did not align well and some of them I couldn't tighten at all. Overall I am very pleased with the purchase it's very comfortable and sturdy for the price. I just wish the arms were a little bit higher though...
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Reviewed in the United States on April 12, 2026
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Mr R
New York, US
★★★★★ 5
Nice
Color: Black, Size: 1 Pack
Nice chair. Easy to assemble. Comfortable enough. Arm rests are nice. Would buy again
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Reviewed in the United States on May 19, 2026

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