300-671 Features:

• Includes (2) high-volume dual-injector fuel rails with 3/4 in.-16 (8 AN) O-ring ports and mounting hardware
• This is the intake manifold base for Holley Modular Lo-Ram EFI Intake Manifold 510-300-683
• For GM LS Gen III and Gen IV engines with stock or aftermarket GM LS3/L92 cylinder heads
• Designed for forced-inducted supercharged or turbocharged engine applications
• 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 a top-feed configuration or fitting under a stock or mildly modified hood in the front-feed configuration
• The fuel rails are dual-fuel compatible
• Base plenum top mounting flange height - 5.670 in.

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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