Breakdown of Included Items

Holley 300-600 Intake Manifold Base and Fuel Rail Kit for Holley Modular Lo-Ram EFI Intake Manifold 300-620 Features:

• This is the lower intake manifold within the Holley 300-620
• Being sold separately allows the selection of components individually to build your own custom setup or system
• Designed for GM LS Gen III and IV engines equipped with GM LS1/LS2/LS6 cathedral port stock or aftermarket cylinder heads
• Designed for forced-inducted supercharged or turbocharged engine applications
• Designed for 105 mm throttle body 112-581 or similar
• Peak power at 7,000-8,000 rpm (depending on the application)
• The low manifold height aids in the installation of a plenum mounted air-to-water intercooler in the top-feed configuration
• Cast aluminum silver satin 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.

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