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Stress-free Holley Hi-ram - (cathedral-105mm) Black 300-123bk Take An Extra 65% Off [HKOdXhBW]

$51.99 $166.99 -69%

HOLLEY HI-RAM INTAKE MANIFOLD - CATHEDRAL #300-123BKIncludes:Modular Hi–Ram Intake Manifold #300-123BKHolley Fuel Rails Description:Holley GM LS1/LS2/LS6 Modular Hi–Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet

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Stress-free Holley Hi-ram - (cathedral-105mm) Black 300-123bk Take An Extra 65% Off [HKOdXhBW]

HOLLEY HI-RAM INTAKE MANIFOLD - CATHEDRAL #300-123BK

Includes:

  • Modular Hi–Ram Intake Manifold #300-123BK
  • Holley Fuel Rails 

    Description:

    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

     

    Part Number 300-123BK
    Brand Holley
    Engine Type Gen III/Gen IV
    Port Style Cathedral
    Throttle Body Port 105mm
    RPM Power Band 1500-7000

     

    Installation Notes: These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration. Top can be mounted forward or backward.

      NOTE: The EFI versions of the LS Hi-Ram intake manifold and fuel rail are designed to accept Bosch Style EV-1 or Magneti Marelli Pico fuel injectors. OE LS fuel injectors may not fit properly in the Hi-Ram EFI intake manifold fuel rail assembly without the use of height adapters.

      *Item ships directly from vendor.

      What Our Customers Say

      January 25, 2026

      Absolutely no complaints!

      A smart product that is so easy to use.

      - Amir X..

      January 25, 2026

      Absolutely no complaints!

      This product is a real and true work of art.

      - Destiny M..

      January 25, 2026

      Absolutely no complaints!

      It's a very good quality, and solid product.

      - Alice F..

      Write a Review

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