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Dual Fuel Injector Ultra Lo-Ram EFI Intake Manifold Kit GM LS1/LS2/LS6

Part # 300-625

Plenum Burst Plate Flange, Satin Finish

Dual Fuel Injector Ultra Lo-Ram EFI Intake Manifold Kit GM LS1/LS2/LS6

Not Available

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Emissions

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

See Emissions Details
The Holley LS1/2/6 Ultra 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 manifold and rail kits will work with OE (Original Equipment) or aftermarket cylinder heads. The 300-625 (satin) & 300-625BK (black), intake manifold kits provide two injectors per cylinder for hi-volume fuel demands, flexible fuel supply strategies, and dual-fuel capability. Also featured on this kit is a standard 6-1/8" x 3-1/8" burst panel flange. SFI approved burst panels, burst panel frame sets, and gaskets may be purchased from various manufacturers such as Allstar Performance or Specialty Fasteners. The short runner, low-profile base intake manifold was conceived to package with high-boost turbocharged or supercharged induction systems with a short overall height not possible with other existing intake manifolds. This Holley Ultra Lo-Ram kit is configured for a 105mm throttle body, see Holley P/N 112-581 or similar models. 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. Holley Lo-Ram intake manifold kits include all the sealing o-rings, plugs, and fasteners required for the installation of the kit.

Features:

  • Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
  • Provides best performance for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm, depending on the application
  • Dual-injector, separate-passage, high-volume fuel rails with mounting hardware, dual-fuel capable, 8 AN o-ring portsDual-injector, separate-passage, high-volume fuel rails with mounting hardware, dual-fuel capable, 8 AN o-ring ports
  • Plenum top is machined for a standard “large” 6-1/8” x 3-1/8” burst panel. Burst panels, burst panel frame sets, and gaskets may be purchased from various manufacturers such as Allstar Performance or Specialty Fasteners
  • Modular LS1 Lo-Ram design allows customization for user desired configurationsDesigned for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
  • Available with both as-cast satin and black power-coat finishes
  • Low height & compact packaging allows installation in most applications often under stock hoods

About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!

Basic Operating RPM Range3500-8000 RPM
Brand Holley EFI
Burst Panel CompatibleYes
CategoryAir and Fuel Delivery
ColorSilver
ConstructionCast
EGR PortNo
Emission Code3
EngineGM LS1/LS2/LS6
FinishSilver
Flange StyleEFI
Front Height9.07" without Intercooler
Front Maximum Height9.07 IN
Fuel System TypeEFI
Grade TypePerformance
Injector QuantityDual
Inlet LocationFront
Intake Port Gasket(s) IncludedNo
Manifold TypeUltra Lo-Ram
MaterialAluminum
Nitrous Bung(s) IncludedNo
Plenum FinishNatural
Product TypeIntake Manifold
Recommended UseForced Induction
Removable RunnersNo
RPM Power Band3500-8000 RPM
Single Or Dual Plane TypeSingle Plane
Throttle Body Bore Diameter105 MM
Throttle Body IncludedNo
WarrantyManufacturer's Limited 90 Day Warranty
UPC090127080115
Part Number300-625
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This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) 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


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
Manufacturer's Limited 90 Day Warranty: See Details

*Free Shipping and 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.