SKU: 33971219369

Holley 300-122 LS HI-Ram EFI Manifold

Sale price$517.48 Regular price$574.98
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Description

Holley 300-122 LS HI-Ram EFI ManifoldLS1 2 6 HI RAM IM, EFI, 92MM LS TB Overview 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

LS1/2/6 HI-RAM IM, EFI, 92MM LS TB

Overview

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 92/102mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
  • Port Size – 2.49” Height x 1.21” Wide
  • Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
  • Plenum Top Gasket Type – 3/32” Round O-ring Cord
  • Throttle Body Flange Location, with 92mm 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)
  • Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²

Application

  • 1953-2019 Chevrolet Corvette
  • 1964-2019 Pontiac GTO
  • 1966-2019 Chevrolet Camarro

Specs

Brand Holley EFI
Color Aluminum
Construction Cast
Emission Code 3
Engine GM LS1/LS2/LS6
Finish Satin
Flange Style EFI
Front Height 12.32 inch
Fuel System Type EFI
Manifold Type Hi-Ram
Product Type Manifold
Rear Height 11.00 inch
RPM Power Band 1500-7000
Warranty Limited 90 Day
Part Number 300-122
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: 33971219369

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Reviewed in the United States on May 9, 2026
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Reviewed in the United States on April 11, 2026
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1Meza
New York, US
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Style: 10 Inch, Size: 172 Count (Pack of 1), Style: 10 Inch, Size: 172 Count (Pack of 1)
If you’re tired of the "double-plate shimmy" where you have to stack two flimsy plates just to survive a barbecue, the Dixie Ultra 10-Inch Plates are a total game-changer. This 172-count bulk pack is the gold standard for anyone who actually likes to pile on the food. Why They’re Worth It: True Strength: The "3X Stronger" claim isn't just marketing fluff. These can handle a massive helping of steak, potato salad, and corn on the cob without folding under pressure. Soak-Proof Shield: They feature a high-quality coating that keeps grease and sauces from leaking through to your lap or your table. Microwave Safe: Unlike some cheaper alternatives, these don't get soggy or "wilt" when you're reheating leftovers. Value Size: Getting 172 plates (divided into 4 convenient packs) means you're set for multiple parties, holidays, or just those nights when you really don't want to do the dishes. Bottom Line: These are the "heavy lifters" of the paper plate world. They’re large enough for a full dinner and tough enough to handle the messiest meals. Highly recommended for anyone who values durability over price-point flimsy alternatives.
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lynn
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