SKU: 91828615211

Holley LS Hi-Ram EFI Manifold - Black - 300-123BK

Sale price$562.48 Regular price$624.98
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Description

Holley LS Hi-Ram EFI Manifold - Black - 300-123BKOverview: 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:

  • 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.
  • Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
  • Throttle Body Flange Location, with 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)
  • Plenum Top Gasket Type – 3/32” Round O-ring Cord
  • Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
  • Port Size – 2.49” Height x 1.21” Wide

 

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)
Finish Black
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 91828615211

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Jason
Pawtucket, US
★★★★★ 3
Soft and subtle flavor
Flavor Name: Best Sellers Variety Pack, Size: 16 Fl Oz (Pack of 12)
Who doesnt love a hint of flavor
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Reviewed in the United States on March 29, 2026
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GS
Lake Worth, US
★★★★★ 5
Flavored Water I Actually Crave
Flavor Name: Best Sellers Variety Pack, Size: 16 Fl Oz (Pack of 12), Flavor Name: Best Sellers Variety Pack, Size: 16 Fl Oz (Pack of 12)
I didn’t expect to get hooked on a flavored water, but Hint Water Watermelon has honestly become one of my everyday essentials. I usually get bored with plain water, but this hits that perfect balance, it’s just enough flavor to keep things interesting without feeling fake or overpowering. The watermelon taste is super light and refreshing, like a subtle hint of a fresh slice rather than that overly sweet candy version you get with a lot of drinks. I’ve tried a ton of flavored waters, and this is one of the few that doesn’t leave any weird aftertaste, which is a huge win for me. I find myself reaching for it throughout the day, especially when I’m trying to stay hydrated but don’t want soda or anything sugary. It just feels clean and easy to drink. At this point, it’s kind of replaced most other drinks for me. I always make sure I have a few bottles on hand.
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Reviewed in the United States on April 29, 2026
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Verified Purchase
Jonathan Jones
Birmingham, US
★★★★★ 5
Great value for a quality brew - Dark Roast
Flavor Name: Dark Roast, Size: 24 Count (Pack of 1)
Have been buying a name brand at almost 2x the price. This is rich, bold, and flavorful. We like this dark roast coffee a lot. We will buy it again and continue enjoying these handy pods for our morning coffee.
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Reviewed in the United States on May 9, 2026
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Tracy
Cuba, US
★★★★★ 5
Great coffee at a great price point.
Flavor Name: Dark Roast, Size: 100 Count (Pack of 1)
I priced these against the pods were were getting from big box and grocery stores and found these were slightly less expensive. Took a chance on these when I didn't have time to run to the store. My coffee connoisseur co-worker said they were the best we've had and our guests have commented on how nice the flavor is. For the price, you can't beat it.
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Reviewed in the United States on May 18, 2026
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Classy Grandma
Port Orchard, US
★★★★★ 4
A dark option.
Flavor Name: Dark Roast, Size: 100 Count (Pack of 1)
I decided to try this--I like a robust, rich flavored coffee. The color of Happy Belly Dark is good but the flavor a bit lacking for me.
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Reviewed in the United States on March 23, 2026

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