SKU: 91828615211

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

Sale price$562.48 Regular price$624.98
Save 10%

Pay in installments of $156.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 20 - Jul 25

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 20 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
CJM
Louisville, US
★★★★★ 5
Arm chair traveling on a cold winter retreat
Format: Paperback
This was the perfect book to get me back into reading! I’ve happily filled my evenings, transported to the John Muir Trail traveled by The Three Women. Your descriptions of such an immense beauty and reflections of your personal journey were at times like being on the trail with you all! An inspirational read!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
A
Verified Purchase
ALLshop
Chelsea, US
★★★★★ 4
A great tale of women trekking together
Format: Kindle
This is well -written, enjoyable to read, and like the three women on the trail as a reader you don't want it to end as they near the end of the JMT. Filled with beautiful descriptions of scenery, humorous retelling of some difficult days, and interesting encounters with other people. Even for the non-hiker this book is a fun read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2024
L
Verified Purchase
Linda Woodward
Charlottesville, US
★★★★★ 5
One of the best real life adventure stories ever.
Format: Paperback
An absolutely wonderful book. The author takes the reader on an amazing hike on the John Muir Trail. She & her two hiking companions experience vast natural beauty, physical demands, ferocious weather & accidents, but together they get to the trails end atop Mt Whitney. Her descriptions of the hike & the environment bring the reader right along with them. This is truly an amazing adventure tale & also the authors personal memoir. If you love the outdoors, hiking, mountains……or even if you don’t, this is an exciting read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 23, 2025
L
Verified Purchase
Lucy
San Leandro, US
★★★★★ 3
A natural storyteller
Format: Paperback
Three middle-aged women hike the mighty John Muir Trail, the crown jewel of California that covers over 200 miles of steep and rocky terrain in the Sierra. It was a big deal. The 3-week wilderness trip extended over multiple, high-elevation passes, crossed roaring water and rose to the summit of Mount Whitney, the tallest mountain in the contiguous US at 14, 505 feet. Griffin’s storytelling comes naturally and with ease. This inspirational, follow-your-dreams story is easy to feel surrounded by because of Griffin’s vivid writing. Luscious accounts of landscapes, macro details of the natural world and the knee-knocking, quad-stabbing terrain puts you, the reader, right there. Conversely, the detailed prose is a huge liability in the pacing of this book. Mundane details are redundant as the book slogs on. Long descriptions overtake the read and the focus stays superficial. I would have liked much more character development, and better cadence and dialogue.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
P
Verified Purchase
Primo Won
Lexington, US
★★★★★ 5
My Favorite Camino Read To Date
Format: Kindle
I have read dozens of Camino retellings. This, by Brad Chermside, is my most enjoyed. Brad is an excellent writer with no fear of exposing his insecurities and weaknesses, physical or social. His many metaphors are original and laugh-out-loud funny. He used several interesting writing techniques to keep me in suspense. The most effective being, from the start of the narrative, finding out if when he met the never met mystery woman, who was the catalyst for him beginning his journey, and he would click. It was eventually answered. Highly recommend the book. Hat's off to Mr Chermside on an excellent read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2020

recommand products