SKU: 75948166065

Holley LS Hi-Ram EFI Manifold - 300-125

Sale price$607.48 Regular price$674.98
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Description

Holley LS Hi-Ram EFI Manifold - 300-125Overview: 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:

  • 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.
  • 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
  • Throttle Body Flange Location, with 92/102mm 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)
  • 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 Aluminum
Construction Cast
Emission Code 3
Engine GM LS7
Finish Satin
Flange Style EFI
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]
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SKU: 75948166065

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Belleville, US
★★★★★ 5
Smells so good
Size: 4 Fl Oz (Pack of 1), Unit Count: 4.0
I mix this with rosemary oil and give myself a treatment once a week. My hair is kinda dry as I age and this helps. I let it sit in a cap for a few hours then wash it out. It washes out surprisingly very easily and smells delightful!
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Reviewed in the United States on November 9, 2025
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Maria garcia
New York, US
★★★★★ 5
I love this
Size: 4 Fl Oz (Pack of 1), Unit Count: 4.0
This product really makes your hair grow men’s just split ends. It’s amazing. I will keep using this for the rest of my life.
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Reviewed in the United States on March 15, 2026
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Amazon Customer
Whiting, US
★★★★★ 5
Genuine product
Size: 4 Fl Oz (Pack of 1), Unit Count: 4.0
Works well keeps my hair soft the whole day
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Reviewed in the United States on September 4, 2025
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S.S.X.
Port Orchard, US
★★★★★ 3
Let's see how it works
Size: 4 Fl Oz (Pack of 1), Unit Count: 4.0
Much easier to use than the jar, I hope it works as well. After 6 weeks, Well my hair is exactly the same. No regrowth on my edges and my hair is not healthier. It’s just a basic hair oil. Will not repurchase
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Reviewed in the United States on February 22, 2025
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Ornella Daly
Dallas, US
★★★★★ 5
It works!
Scent: Smoky coffee, Size: 4 Fl Oz (Pack of 1)
There is a strong smell or roasted coffee beans but since I started using this product my edges are healthier and the hair at the middle of my head that has been struggling to grow is gaining some length. The product itself can get hard depending on the temperature of your room but if you use it as directed the texture isnt so bad. The oil is thick and not very greasy or difficult to wash away. Definitely effective. 100% will recommend.
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Reviewed in the United States on December 16, 2025

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