fits model: Ls7, Ram.

( Brand: Holley Efi ), ( Part Type: Manifold ), ( Manufacturer Part Number: 300-125BK ), ( Color: Black ), ( Manufacturer Warranty: Limited 90 Day ), ( UPC: 090127059920 )
The Holley EFI 300-125BK LS Hi-Ram Manifold is a high-performance intake manifold designed for GM LS series engines, specifically the LS7 engine. This manifold is part of Holley's EFI (Electronic Fuel Injection) line of intake solutions, which takes advantage of the latest technology to deliver optimal engine performance.
The Holley 300-125BK manifold is constructed from high-grade aluminum, ensuring strength and durability. Its unique design features a large plenum volume, providing enhanced air charge motion for improved low-end torque and mid-range power. The manifold's high runners promote efficient air/fuel mixture flow to the engine, resulting in more complete combustion and increased horsepower.
This manifold comes equipped with Holley's patentedHi-Ram design, which delivers benefits such as better throttle response and increased engine efficiency. The design incorporates high-velocity runners and consistent runner lengths, resulting in an efficient air/fuel mixture delivery system. It also includes a Polished Dish Design, which offers enhanced scavenging for improved volumetric efficiency.
The Holley EFI 300-125BK LS Hi-Ram Manifold is compatible with GM LS7 engines equipped with Holley EFI 350-232, 350-240, or 340-133 systems. It is also designed to be used with Holley's line of Dominator EFI controllers, providing a plug-and-play installation experience. Additionally, this manifold includes Bosch 650cc/min fuel injectors.
The Holley EFI 300-125BK LS Hi-Ram Manifold is a must-have for those looking to maximize the performance of their GM LS7 engine. With its advanced design, tough construction, and plug-and-play compatibility, it sets the stage for increased horsepower and torque, better throttle response, and improved engine efficiency.
Holley EFI 300-125BK LS Hi-Ram Manifold (for GM LS Series Engines) is a popular fuel injection system manifold choice for LS engine builds. Here are some pros and cons to help you make an informed decision:
**Pros:**1. Improved Performance: Holley EFI systems are known for their ability to deliver precise fuel delivery, allowing for better combustion and improved overall performance.
2. Flexibility: This manifold can support multiple LS engine applications, making it a versatile option.
3. Larger Fuel Capacity: The Holley Hi-Ram manifold offers increased fuel capacity over stock, which can lead to better response and reliability during high-performance applications.
4. Easy Installation: Many users report that the Holley EFI system is easier to install than other options.
5. Advanced Features: The Holley EFI system includes features such as adjustable fuel pressure, integration with Holley EFI estimates, and built-in pre-wired accessories.
**Cons:**1. Cost: The Holley EFI system can be expensive compared to other fuel injection options.
2. Complexity: Managing the Holley EFI system can be more complex than traditional carburetors or stock fuel injectors, requiring a learning curve for some users.
3. Electrical Requirements: A dedicated ignition system and wiring harness may be necessary for proper functioning of the Holley EFI system.
**Conclusion:**The Holley EFI 300-125BK LS Hi-Ram Manifold offers the advantage of precise fuel delivery, improved performance, and flexibility for various LS engine applications. However, its high cost and complex nature can be a disadvantage for some users. Ultimately, if you're looking for a high-performance fuel injection system, the Holley EFI system may be worth the investment. Be sure to research the installation process and consider if the advanced features and improved performance are worth the additional cost and complexity.
**Recommendation:** If you're deciding between various fuel injection systems, consider selecting the Holley EFI 300-125BK LS Hi-Ram Manifold if:1. You're seeking a high-performance fuel injection system that can provide precise fuel delivery, advanced features, and improved response and reliability.
2. You understand the installation process and are willing to invest in the cost and complexity of the system.
However, if a simpler and more affordable fuel injection system or stock injectors are suitable for your application, those may be more appropriate options for your project. Consider your specific project requirements and budget before making a final decision.
Buyer pays return shipping. Total height with 92/105mm EFI Plenum Top 12.32 to the lifter valley cover flange on engine block. Port Size 2.49 height x 1.21 Wide. Down from vertical ; Runner length 6.29, As-Cast Cross-Sectional Area Tapered 4.67 in to 2.84 ; Base Plenum Top Mounting Flange height 8.42 the lifter valley cover flange on engine block.