Breakdown of Included Items

Holley 300-600BK Features:

• This is the intake manifold base, included with and also the replacement for the Holley 300-620BK
• Designed for GM LS Gen III and IV engines equipped with GM or aftermarket LS1, LS2, or LS6 cathedral port cylinder heads
• The base being sold separately is part of Holleys modular design to allow you to build the intake in different configurations according to your engines needs
• Short runners for forced-inducted supercharged or turbocharged engines
• Compatible with Holley Top Plenum Lid 300-631BK and Holley Throttle Body Adaptor 300-630BK
• Black Powder-Coat finish
• Includes high volume fuel rails with 8 AN (3/4 in.-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.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART