1. Automotive Used Intake Manifolds Items
  2. sku: 5085537874849532
  3. HOLLEY EFI 300-123BK

HOLLEY EFI 300-123BK Ls Manifold Gm 090127688915 LS1/LS2/LS6

fits model: Ls1, Ls2, Ls6, Ram.

300-123bk Holley Efi Ls Hi-ram Manifold - Black Gm Ls1/ls2/ls6

( Brand: Holley Efi ), ( Part Type: Manifold ), ( Manufacturer Part Number: 300-123BK ), ( UPC: 090127688915 )

Review HOLLEY EFI Ls Hi ram Manifold Black Gm Ls1/ls2/ls6 fits RAM LS1 LS2 LS6

The Holley Efi 300-123BK LS Hi-Ram Manifold is a high-performance intake manifold designed for use with General Motors LS1, LS2, and LS6 engines. This intake manifold is part of Holley's EFI product line, which is renowned for delivering optimal engine performance and easy installation.

The Holley LS Hi-Ram Manifold is a multi-port design, featuring a unique high-ram runners configuration. This design provides improved airflow and throttle response, allowing for increased horsepower and torque. The manifold's runners increase in size toward the throttle bodies, which helps to ensure a smooth and efficient airflow from the air filter to the cylinders.

One of the standout features of this manifold is its integral passenger side cooling provision. The cooling provision comes in the form of an integrated water crossover that allows for easy installation of a water neck or coolant crossover hose. This feature facilitates the installation of water-miscible fuel injection systems or other cooling system modifications.

Another noteworthy aspect of the Holley Efi 301-123BK LS Hi-Ram Manifold is its compatibility with a wide range of throttle body sizes. The manifold is designed to work with throttle bodies ranging from 60mm to 80mm in size, giving you the flexibility to choose the ideal setup for your specific engine configuration and power goals.

Installation of the manifold is relatively straightforward, with most of the necessary hardware included in the kit. The included hardware includes mounting hardware, gaskets, and all necessary vacuum ports. The manifold also utilizes Holley's proven design for secure, leak-free connections between the intake runners and the engine cylinder heads.

In conclusion, the Holley Efi 300-123BK LS Hi-Ram Manifold is an excellent choice for any enthusiast looking to boost the performance of their GM LS1, LS2, or LS6 engine. With its high-ram runners design, integral water crossover, and flexible compatibility with various throttle body sizes, this intake manifold is sure to provide significant power gains and improve engine response. The easy installation process and included hardware make it a practical and hassle-free upgrade option for any enthusiast.

Pros and Cons of Buying Holley EFI 300-123BK LS Hi-Ram Manifold for GM LS1/LS2/LS6 Engines

I. Introduction

The Holley EFI 300-123BK LS Hi-Ram Manifold is a popular aftermarket intake manifold solution for GM LS1, LS2, and LS6 engines. This manifold is known for its high-flow design and compatibility with Holley's EFI systems. In this analysis, we will explore the pros and cons of investing in this particular setup.

Pros:

1. Enhanced Performance: The Holley EFI 300-123BK manifold is specifically designed for high-performance applications. With a large velocity stack design and optimized runners, this intake system increases airflow and improves engine performance.

2. Compatibility: This intake manifold is suitable for various GM LS engines, including LS1, LS2, and LS6, providing versatility for engine swaps and upgrades.

3. Holley EFI Integration: The intake manifold is engineered to work seamlessly with Holley Electronic Fuel Injection systems, ensuring consistent fuel mixture delivery, bright Idle and improved throttle response.

4. Proven durability: Holley Engine Products is a well-known brand in the automotive aftermarket industry, and the 300-123BK LS Hi-Ram Manifold is no exception. This intake manifold is built to withstand the demands of high-performance applications and racing conditions.

5. Simplified Installation: Holley's intake manifold kit includes all the necessary hardware, making the installation process seamless for most DIY enthusiasts. They also offer an installation guide to facilitate the transition.

Cons:

1. Expensive: The Holley EFI 300-123BK LS Hi-Ram Manifold is a premium aftermarket solution. Its price point might be a hurdle for some enthusiasts who want maximum power improvement for a cost-effective investment.

2. Potential Clearance Issues: For certain applications, some competitors' intake manifolds may offer more clearance. Therefore, better research, including engine bay measurements, is essential to ensure proper fitment when pairing it with certain accessories like power steering systems.

3. Custom Tuning: The Holley EFI system is known for its advanced capabilities, but custom tuning may require professional assistance or extensive knowledge of the engine management system and tuning software.

Conclusion:

The Holley EFI 300-123BK LS Hi-Ram Manifold offers many advantages for enhancing the performance of LS engines. This intake manifold delivers increased airflow, seamless EFI integration, and proven durability. HOwever, the relatively high price point and potential clearance issues are worth considering.

Recommendation:

For those seeking high-performance improvements and opting for a Holley EFI system, the Holley EFI 300-123BK LS Hi-Ram Manifold is an excellent choice. It is essential to meticulously examine engine bay dimensions and confirm compatibility before purchasing. By making an informed decision, this intake system will provide superior performance and a satisfying driving experience.

Details:

Buyer pays return shipping. A signature is required on all UPS orders over $750. Down from vertical ; Plenum Top Gasket Type 3/32 Round O-ring Cord; Mounting Flange Standard LS3 Molded O-Ring; Port Size 2.49 height x 1.21 Wide;.

part #: 300123bk prices

  • $1349.95-$1410.09

specifications inputmanifolds:

  • for models: Ls1, Ls2, Ls6, Ram
  • brand: Holley Efi
  • part type: Manifold
  • manufacturer part number: 300-123BK
  • upc: 090127688915

payments inputmanifolds:

  • other
  • wallet: Paypal
  • credit card: Mastercard

returns inputmanifolds:

  • time: 30 Days
  • paid by: Buyer
  • policy: Returns Accepted

general inputmanifolds:

  • Car Truck Parts Accessories > Air Fuel Delivery > Intake Manifolds
  • condition: New

shipping inputmanifolds:

  • cost: $0.00
  • service: UPS Ground
  • class: Standard
  • type: Fixed
  • carrier: UPS
  • transit: 4-10 Days

seller inputmanifolds:

  • city: Bowling Green, Kentucky
  • # reviews: 14014
  • rating: 98.7%

offer inputmanifolds:

  • started: February 8, 2025
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 10
for models: ls1, ls2, ls6, ram, part type: manifold,
category: auto parts > car truck parts accessories > air fuel delivery > intake manifolds, sku: 5085537874849532,

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5 offers $1349.95–$1410.09 USD
  • New. Offer #1 priced at $1410.09 + $0.00 delivery = $1410.09* total. Cast aluminum construction. Holley has been the undisputed leader in fuel systems for over 100 years.FREE SHIPPING
  • New. Offer #2 priced at $1349.95 + $0.00 delivery = $1349.95* total. LS1/LS2/LS6 Cathedral Port EFI fits 1 x 105MM Throttle Body - Black Ceramic Coating.FREE SHIPPING
  • New. Offer #3 priced at $1349.95 + $0.00 delivery = $1349.95* total. 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. 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.FREE SHIPPING
  • New. Offer #4 priced at $1349.95 + $0.00 delivery = $1349.95* total. 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. Total Height with 92/105mm EFI Plenum Top 12.32 to the lifter valley cover flange on engine block.FREE SHIPPING
  • New. Offer #5 priced at $1349.95 + $0.00 delivery = $1349.95* total. Intake Manifolds, EFI, LS Hi-Ram, Cathedral Port Head, Multi-port, 105mm Bore, Standard Deck, Aluminum, Black Finish, Chevy, 4.8-6.0L, Each.FREE SHIPPING

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