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Holley EFI

Holley 300-671BK Lo-Ram Intake Manifold Base Dual Injector Black Finish

Part # 300-671BK Be the first to write a review

Compatible with GM LS Gen III and IV engines equipped with LS3/L92 Heads

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Holley 300-671BK Lo-Ram Intake Manifold Base Dual Injector Black Finish

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This Holley Low Ram manifold base fits Gen III/IV engine with original or aftermarket LS3/L92 cylinder heads. It is designed forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm. It has a low base height to aid the packaging of a plenum mounted air-to-water intercooler in a top-feed configuration. It includes high flow fuel rails with 3/4-16 (8 AN) O-ring ports with two sets of mounting brackets that allow the use of standard tall injectors or short Pico or LS7 injectors. Black powdercoate finish, an as-cast finish is also available, 300-671. And a single injector version is also available, #300-670BK. Mounting hardware is included.

Features:

  • Designed for Gen III/IV engines with OE or aftermarket LS3/L92 heads
  • Maximum performance for supercharged or turbocharged applications with peak power at 7000-8000 rpm
  • Base manifold has low height to accommodate custom plenum mounted air-to-water intercoolers
  • Modular LS3 Lo-Ram design allows customization for user desired configurations
  • High volume dual injector, dual passage, fuel rails with 3/16-16 (8 AN) O-ring ports for sixteen injector configurations. Mounting hardware included
Brand Holley EFI
Emission Code3
Product TypeIntake Manifolds
UPC090127100820
Manufacturer Part Number300-671BK
Part Number300-671BK
3

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
Instructions for Part #300-671BK
Manifold base height- 5.67"

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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.