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Holley Modular Lo-Ram EFI Manifold LS1/2/6

Lo-Ram Manifold Kit - LS1/2/6 Front-feed

PART# 300-621

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$755.95   Suggested Retail
$679.95   Holleydays Price
Estimated shipping date: 12/20/2019
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Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17" Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"

Overview

The Holley LS1/2/6 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood in the front-feed configuration. The 300-621 Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors.

Features:

  • Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
  • Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
  • With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used
  • Modular design allowing the use of front-feed plenum entry
  • Intake design facilitates custom inlet duct and throttle body placement
  • Low height to fit under a stock or mildly modified hood in the front-feed configuration
  • Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
  • Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
  • High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)

Specs

BrandHolley EFI
ColorSilver
ConstructionCast
Emission Code3
EngineGM LS1/LS2/LS6
FinishSatin
Flange StyleEFI
Front Height6.86" height with throttle body adapter
Fuel System TypeEFI
Manifold TypeLo-Ram
Product TypeManifold
WarrantyLimited 90 Day
Part Number300-621

Service Parts


Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and 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 following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

Tech Resources

Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17" Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"

Warranty Information

Limited 90 Day: See Details
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      Some parts are not legal for use in California or other states with similar regulations.

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