Breakdown of Included Items

Features:

• This is the lower intake manifold base within the Holley 510-300-624 and Holley 510-300-620, designed for two-injectors per cylinder
• Offers the ability to build your own custom setup starting with this intake manifold base
• Fits GM LS Gen III and IV engines equipped with GM LS1/LS2/LS6 cathedral port stock or aftermarket cylinder heads
• Having two-injectors per cylinder delivers enough fuel for high-volume demands, variable fuel supply tuning, and dual-fuel capabilities
• The overall height of the manifold height is low enough to help in the installation of plenum mounted air-to-water intercoolers (top-feed configuration)
• Suitable for forced-inducted supercharged or turbocharged engine applications with a peak power of 7,000-8,000 RPM (depending on the application)
• Cast aluminum silver satin finish
• Top-feed plenums designed for 105 mm throttle body 510-112-581 or similar
• This base includes dual-injector, separate-passage high-volume fuel rails with 8 AN (3/4 in. (.750) -16) O-ring ports and mounting hardware (see parts breakdown link above)
  • 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