Product Description
Holley Ultra Lo-Ram EFI Intake Manifold Kit Black LS3 L92 Rectangle Port Single Injector
The Holley Ultra Lo-Ram EFI Intake Manifold Kit is engineered for high-performance GM LS Gen III and Gen IV rectangle-port engines equipped with LS3 and L92 cylinder heads. Designed specifically for turbocharged and supercharged applications, this modular intake offers exceptional airflow while maintaining a low overall height for improved hood clearance.
The front-feed plenum allows for custom throttle body placement and inlet fabrication, making it an excellent choice for custom turbo and centrifugal supercharger builds. Designed to support peak power in the 3,500-8,000 RPM operating range, the Ultra Lo-Ram combines short runners with a large plenum to maximize performance in high-horsepower boosted applications. The low-profile design clears many factory engine bays, including C6 Corvette applications, without requiring hood modifications.
High-volume fuel rails are included and feature brackets for both standard-length and short (LS7/Pico-style) fuel injectors. This version features single injector provisions.
Features
- Designed for GM LS Gen III & Gen IV engines equipped with LS3 and L92 rectangle-port cylinder heads
- Optimized for turbocharged and supercharged engine combinations
- Single injector configuration
- Low-profile design fits under many stock or mildly modified hoods
- Front-entry modular plenum allows custom throttle body adapters and inlet duct fabrication
- Designed for use with a 105mm throttle body (Holley 112-581 or equivalent)
- Clears C6 Corvette hoods and cowls without modification
- High-volume aluminum fuel rails included
- Fuel rail kit includes brackets for both standard-length and short (LS7/Pico-style) fuel injectors
- 3/4”-16 O-ring (-8 AN) fuel rail ports
- Modular removable lid design for easy servicing and customization
- Durable black cast aluminum construction
Specifications
- Part Number: 300-680BK
- Basic Operating RPM Range: 3,500-8,000 RPM
- CNC Ported: No
- Color: Black
- Construction: Cast
- Material: Aluminum
- Engine: GM LS3 / L92
- Cylinder Head Port Shape: Rectangle
- Intake Manifold Type: Ultra Lo-Ram
- Configuration: Single Plane
- Injector Configuration: Single
- Inlet Location: Front
- Throttle Body Bore: 105mm
- Front Height: 6.86”
- Deck Height: 9.24”
- Fuel Rails Included: Yes
- Fuel Injectors Included: No
- Throttle Body Included: No
- Throttle Body Gasket Included: Yes
- Intake Gasket Included: Yes
- Intake Port Gaskets Included: No
- Vacuum Ports: Yes
- EGR Port: No
- Nitrous Bungs: No
- Removable Top/Lid: Yes
- Removable Runners: No
- Recommended Use: Forced Induction
Includes
- Holley Ultra Lo-Ram Intake Manifold
- High-volume fuel rails
- Fuel rail mounting hardware
- Standard-length injector brackets
- Short injector (LS7/Pico-style) brackets
- Intake gasket
- Throttle body gasket
Notes
- Fits GM LS Gen III and Gen IV engines equipped with LS3 or L92 rectangle-port cylinder heads.
- Designed for use with a 105mm throttle body (sold separately).
- Fuel injectors and throttle body are not included.
- Intended primarily for turbocharged and supercharged engine applications.
