Holley 300-123 LS1/LS2/LS6, Hi-Ram Intake Manifold, 105mm Throttle Body Flange, Aluminum, Natural

$1,140.43
MSRP: $1,178.00
(You save $37.57 )
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SKU:
HLY300-123
MPN:
300-123
UPC:
90127681688
Condition:
New
Weight:
34.50 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

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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
  • Engine Block Style:
    Stock/OEM standard deck
    Basic Operating RPM Range:
    3,500-8,000
    Intake Style:
    Fuel Injection
    Material:
    Aluminum
    Finish:
    Natural
    Height:
    12.320 in.
    Injection Style:
    Multi-port
    Throttle Body Bore Size:
    105mm
    EGR:
    No
    Has Bosses:
    Yes
    Bosses Machined:
    Yes
    Boss Quantity:
    N/A
    Injectors Included:
    No
    Fuel Rails Included:
    Yes
    Aftermarket Fuel Rail Required:
    Yes
    Throttle Body Included:
    No
    Quantity:
    Sold individually.
    Notes:
    With cathedral port heads only. Fuel rails are machined for -8 AN O-ring female fittings.
    Make:
    Chevrolet
    Engine Family:
    Chevy small block Gen III/IV (LS-based engines)
    Engine Sizes:
    4.8L/294-6.0L/364
    Years:
    1997-2017
    Cylinder Head Style:
    Cathedral port