SKU: 88902945971

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold - Black (HO300-123BK)

Sale price$1496.25 Regular price$1662.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 11 - Jul 16

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Holley LS1/LS2/LS6 Hi-Ram Intake Manifold - Black (HO300-123BK)HO300 123BK EFI HI RAM LS1 2 6 MANIFOLD Suit Single GM LS 102mm Throttle Bod Part Number: HO300 123BK 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

HO300-123BK - EFI HI-RAM LS1-2-6 MANIFOLD

Suit Single GM LS 102mm Throttle Bod

Part Number: HO300-123BK

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 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)
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

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: 88902945971

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 975 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
K
Verified Purchase
Karl Doss
Chelsea, US
★★★★★ 5
Nice
Color: Grey on Black Fabric
Better than expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
E
Verified Purchase
Erik Rosado
Louisville, US
★★★★★ 5
Quality timepiece
Color: Brown on Brown Rubber, Color: Brown on Brown Rubber
Beautiful watch keeping accurate time. Quality timepiece
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025
A
Verified Purchase
AQUILES COLOMBO
Houston, US
★★★★★ 5
MUY BONITO
Color: Blue on Blue Fabric
EXCELENTE
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
A
Verified Purchase
Amazon Customer
Louisville, US
★★★★★ 5
Stunning!
Color: Blue on Stainless Steel
Amazing looking watch! Super happy with the design and looks of this piece. I totally love it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 6, 2025
M
Verified Purchase
Michael Falandino
Chelsea, US
★★★★★ 5
Great watch, Art Of Horology was a pleasure to deal with
Color: Anthracite on Stainless Steel
What a great watch! There are so many choices out there (even when you filter out a large portion of those you are clearly not interested in :-). Know what you like, use discipline with your cash, be logical, but then even after all that, you will eventually just have to let the right brain kick in and choose based on creativity and intuition. I needed a watch, and wanted a decent one, that looked good. This does all of that in style. It's not too big, its fairly waterproof, easy to read with clean lines. I wanted lume... The textured face has an interesting effect, like looking out a window at late dusk. Don't buy too many things, but when you do be wise. Even the Dalai Lama likes good watches.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2022

recommand products