Breakdown of Included Items

Dimensions

Holley 300-621 Modular Ultra Lo-Ram EFI Intake Manifold GM LS1/LS2/LS6 Features:

• Designed for GM LS Gen III and IV engines equipped with GM LS1/LS2/LS6 cathedral port stock or aftermarket cylinder heads
• 105 mm throttle body opening
• Designed for forced-inducted supercharged or turbocharged engine applications
• Peak power at 7,000-8,000 rpm (depending on the application)
• Front-feed plenum entry
• Modular design facilitates custom inlet duct and throttle body placement
• The low manifold height fits under stock hoods or mildly modified hoods in the front-feed configuration
• Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
• Cast aluminum silver satin finish
• 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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