Description
Performance Intake Manifold. The Holley EFI Gen III HEMI Hi-Ram Intake Manifold Base is a high-performance induction solution engineered to increase airflow efficiency and power output for large displacement V8 engines. It optimizes fuel delivery and supports naturally aspirated, forced induction, or nitrous configurations. This manifold base is the foundation for custom EFI airflow systems designed to maximize engine performance for enthusiasts and professionals.
Construction and Appearance. Made from cast aluminum, the manifold features a durable, lightweight design finished in either natural satin or black. It includes large intake ports and precision-machined EFI fuel rails with -8AN O-ring fittings that ensure high fuel flow while reducing pressure pulsations. The design incorporates modular elements such as cast-in nitrous nozzle pads and a billet oil fill cap, combining strength, functionality, and race-inspired aesthetics.
Installation. Installation requires no drilling and is designed to bolt directly onto Gen III HEMI engines. The modular base accommodates various EFI top sections for customized induction systems and straightforward engine swaps.
Warranty. Comes with a manufacturer’s limited 90-day warranty.
Application. Fits 2009 to 2026 5.7L and 6.4L RAM 3500 trucks, providing reliable compatibility with these models and large-port Gen III HEMI engines.
Holley EFI 300-653BK
CA Residents: WARNING: Cancer and Reproductive Harm
- Gen III Hemi EFI Manifold Base Black Finish Fits 2009-Up 5.7L, 2005-2010 6.1L, and 2011-Up 6.4L Engines
- Designed for Naturally Aspirated, Forced Induction, or Nitrous Engines in the 5.7 to 7.2+ Liter Range
- Max Power Range at 7500-8500 RPM
- EFI Fuel Rails Machined for -8AN O-Ring Fittings with Large Passages to Accommodate High Fuel Flow and Dampen Pressure Pulsations
- Positive Crankcase Ventilation (PCV) Ports with Adapter Fittings
- Fits Gen III Hemi Engines with Large Intake Ports 1.70” Height x 1.88” Width
- Runner Length 6.65 Inch with Tapered Cross Section Designed for a Wide Range of Engine Configurations
- Port for OE Style Manifold Absolute Pressure (MAP) Sensor, 1 or 2 Bar
- Cast Aluminum Construction with Natural Satin or Black Finish
- Modular Manifold Base Designed for Custom Induction Systems
- Compatible with Gen III Hemi Injectors and Bosch EV-1 Style Injectors
- Billet Oil Fill Cap with Attractive Low Profile Design
- Cast-In Pads for Adding Nitrous Nozzles
- Overall Height 11.59 Inch
- O-Ring Seal to Head with Large Retained O-Rings for Superior OE Style Sealing; Easy to Replace
- Includes Gasket and EFI Fuel Rails
- Works with Naturally Aspirated and Forced Induction Applications
- Fits 2009-2026 5.7L and 6.4L RAM 3500 Trucks
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