Dimensions

Included Items

This black 300-672BK base, being sold separately, is part of Holley's modular design to allow you to build the intake in different configurations according to your engine's needs.

Holley 510-300-672BK Features:

• This single-injector base/fuel rail kit is included with and also the replacement for the Holley 300-680BK intake manifold
• For use in GM LS Gen III and IV engines equipped with GM or aftermarket LS3 or L92 cylinder heads
• Short runners for forced-inducted supercharged or turbocharged engines
• Compatible with Holley's Top Plenum Lid 300-604BK and Holley's Throttle Body Adaptor 300-606BK (sold separately)
• Black Powder-Coat finish
• Manifold base height: 5.670 in.
• Includes high volume fuel rails with 8 AN (3/4 in. (.750) -16) o-ring ports and mounting hardware
  • The fuel rail kit comes with two sets of brackets; one-set for long fuel injectors (usually standard length), and one-set for short fuel injectors (such as Pico or LS7 fuel injectors)

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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