Holley 300-621 Modular Ultra Lo-Ram EFI Intake Manifold GM LS1/LS2/LS6
510-300-621
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Intake Manifold
LS1/LS2/LS6
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Specifications:
Will this fit under stock c6 hood?
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.