Holley Intake Manifold Base and Fuel Rail Kit for Holley Modular Ultra Lo-Ram EFI Intake Manifold 510-300-684BK
510-300-673BK
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Intake Manifold Base
LS3/L92
This black 300-673BK base, being sold separately, is part of Holley's modular design to allow you to build the intake in different configurations according to your engine's needs.
Holley 510-300-673BK Features:
- This dual-injector base/fuel rail kit is included with and also the replacement for the Holley 300-684BK intake manifold
- For use in GM LS Gen III and IV engines equipped with GM or aftermarket LS3 or L92 cylinder heads
- Short runners for forced-inducted supercharged or turbocharged engines
- Compatible with Holley's Top Plenum Lid 300-605BK and Holley's Throttle Body Adaptor 300-606BK (sold separately)
- Black powder-coat finish
- Manifold base height 6.70 in.
- Includes high volume dual injector 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: Not legal for sale or use on Emissions-Controlled Vehicles.
- 1966 and newer U.S. manufactured California-Certified vehicles
- 1968 and newer U.S. manufactured Federally-Certified vehicles
- 1968 and newer Foreign manufactured vehicle
Specifications:
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.