Gen III Hemi EFI Manifold Base - As Cast Finish - Fits 2009-up 5.7L, 2005-2010 6.1L, and 2011-up 6.4L

Part Number: 300-653

The EFI fuel rails are machined for -8AN O-ring fittings with passages large enough to accommodate high fuel flow and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. The Holley Hi-Ram intake manifold is for high-performance applications where induction system height is not limited. Using this Hi-Ram intake with high flowing Gen III Hemi cylinder heads has outstanding potential for naturally aspirated & forced induction applications. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! Intended for use on naturally aspirated, forced induction, or nitrous engines in the 5.7 to 7.2+ liter range, max power at 7500-8500 RPM. Add even more power to your Gen III Hemi engine with a Holley Hi-Ram intake manifold. This cast intake manifold has large intake ports - fits 2009-up 5.7L, 2005-2010 6.1L & 2011-up 6.4L engines. The base is designed to be modular in configuration to accept a wide range of EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations.

Features and Benefits

• Fits Gen III Hemi Engines w/ Large Intake Ports (1.70” Height x 1.88” Wide) – fits 2009-up 5.7L, 2005-2010 6.1L, 2011-up 6.4L)
• Add Even More Power to the Gen III Hemi Engine with a Holley Hi-Ram Intake Manifold
• Port for OE Style Manifold Absolute Pressure (MAP) Sensor (1 or 2 Bar)
• Overall Height: 11.59”
• Includes EFI Fuel Rails w/ -8 AN O-Ring Fittings & Large Passages to Accommodate High Fuel Flow and Dampen Pressure Pulsations in the Fuel System
• Manifold Base – Available Separately for Custom Induction Systems
• O-Ring Seal to Head – Large Retained O-rings Offer Superior Original Equipment (OE) Style Sealing & Are Easy to Replace
• Runner Length and the Tapered Cross Section Designed to Perform Well for a Wide Range of Engine Configurations
• Billet Oil Fill Cap – Attractive Low Profile Design
• Cast Aluminum Construction w/ Natural Satin or Black Finish
• Works with Gen III Hemi Injectors & Bosch EV-1 Style Injectors
• Cast-In Pads for Adding Nitrous Nozzles
• Positive Crankcase Ventilation (PVC) Ports w/ Adapter Fittings

Early 2003-2008 5.7L Engines Can Use 300-652 adapters to Match the Smaller Intake Ports on these Engines. _x000D_ _x000D_ The lid on this intake manifold is machined to fit an LS style throttle body since this allows the use a cable operated throttle body (at a reasonable cost). _x000D_ _x000D_ The 80mm Gen III Hemi Throttle Body (drive by wire) Can Be Used on This Intake - Use w/ 300-660 Adapter Plate._x000D_ The 92mm Hellcat Gen III Hemi Throttle Body (drive by wire) Can Be Used on This Intake - Use w/ 300-661 Adapter Plate.