The Holley LS1/2/6 Ultra Lo-Ram intake manifold kits are meticulously crafted for GM LS Gen III and IV engines featuring GM LS1/2/6 (cathedral port) cylinder heads. Compatible with both OE and aftermarket cylinder heads, these intake manifolds are specifically engineered for forced induction scenarios, be it supercharged or turbocharged applications, and are optimized for use with the 105 mm throttle body (part number 112-581 or similar models). The base intake manifold is thoughtfully designed with a reduced overall height to seamlessly fit under a stock or mildly modified hood.
The 300-621 Lo-Ram plenum entry is configured to provide an exceptionally low-profile modular intake manifold, making it ideal for turbocharged or centrifugally supercharged engines. The fuel rail kits are versatile, featuring two sets of brackets—one for long (usually standard length) fuel injectors and another for short injectors like Pico or LS7.
Key Features:
- Engineered for GM LS Gen III and IV engines with GM LS1/2/6 (cathedral port) cylinder heads
- Tailored for forced induction (supercharged or turbocharged) applications with peak power at 7000-8000 rpm (application-dependent)
- Modular design for compatibility with front-feed plenum entry
- Intake design facilitates custom inlet duct and throttle body placement
- Low height to fit under a stock or mildly modified hood in the front configuration
- Front entry plenum flange allows design and fabrication of special throttle body adapters or inlet ducts for custom installations
- Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
- High-volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)
- Local Pickup Available:
- No
- Local Delivery Available:
- No
- Additional Handling:
- No
