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Holley EFI 300-122 LS Hi-Ram EFI Manifold

Part # 300-122 Be the first to write a review

LS1/LS2/LS6 Cathedral Port EFI for 1 x 92MM Throttle Body

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Holley EFI 300-122 LS Hi-Ram EFI Manifold

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$1,149.95
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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 â€" 8.42” to the lifter valley cover flange on engine block.
  • Total Height with 92/102mm EFI Plenum Top â€" 12.32” to the lifter valley cover flange on engine block.
  • Port Size â€" 2.49” Height x 1.21” Wide
  • Mounting Flange Gasket Type â€" Standard LS3 Molded O-Ring
  • Plenum Top Gasket Type â€" 3/32” Round O-ring Cord
  • Throttle Body Flange Location, with 92mm EFI Plenum Top : Height â€" 8.42” (from engine block lifter valley cover flange), Longitudinal Location â€" 3.84” (forward from engine block front flange), Angle â€" 25 deg. (down from vertical)
  • Runner Length â€" 6.58”, As-Cast Runner Cross-Sectional Area â€" Tapered 4.25 in² to 2.53 in²
Brand Holley EFI
Emission Code4
Product TypeIntake Manifolds
WarrantyManufacturer's Limited 90 Day (1 Year with Warranty Registration)
UPC090127681671
Manufacturer Part Number300-122
Part Number300-122
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

*** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions.
Manufacturer's Limited 90 Day (1 Year with Warranty Registration): See Details

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      *Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

      Some parts are not legal for use in California or other states with similar regulations.

      Holley EFI 300-122 LS Hi-Ram EFI Manifold
      Holley EFI 300-122 LS Hi-Ram EFI Manifold
      $1,149.95