HOLLEY EFI 300-229BK Lower Manifold Gm 090127059944 Ls7

( Brand: Holley Efi ), ( Part Type: Manifold ), ( Material: Aluminum ), ( Color: Black ), ( UPC: 090127059944 ), ( Manufacturer Part Number: 300-229BK )

Review HOLLEY EFI Hi ram Lower Manifold Gm Black fits RAM LS7

Introducing the Holley EFI 300-229BK Hi-Ram Lower Manifold, specifically designed for use with General Motors LS7 engines. This manifold is an essential component of your fuel injection system, delivering fuel from the throttle body to the intake runners in an efficient and precise manner.

The Holley EFI 300-229BK Hi-Ram Lower Manifold is constructed from high-quality aluminum, ensuring durability and reliability. Its hi-ram design offers increased runner length and volume, resulting in improved air charge motion and better engine performance. The manifold is also equipped with large-diameter, port-matched runners that facilitate optimal fuel atomization and air/fuel mixture distribution.

This manifold is designed to work seamlessly with Holley's EFI systems, enabling precise fuel delivery and control. Its integrated fuel rails offer a secure and reliable connection to the fuel injectors, ensuring consistent fuel pressure and distribution. Additionally, the manifold features an integrated fuel pressure regulator, allowing for easy setup and adjustment of fuel pressure.

The Holley EFI 300-229BK Hi-Ram Lower Manifold is also designed with ease of installation in mind. It comes complete with all necessary hardware and gaskets, making the installation process as straightforward as possible. The manifold's polished finish not only looks great but also provides excellent corrosion resistance, ensuring the manifold looks and performs well even in the harshest conditions.

In summary, the Holley EFI 300-229BK Hi-Ram Lower Manifold is a high-performance, high-quality component designed for use with General Motors LS7 engines. Its hi-ram design, large-diameter runners, and integrated fuel rails and regulator make it an essential addition to any EFI system, while its durability and ease of installation make it a smart choice for any enthusiast or professional mechanic.

The Holley EFI 300-229BK Hi-Ram Lower Manifold for GM LS7 engines is a popular aftermarket intake option among performance enthusiasts. Here are some potential pros and cons to consider when deciding whether to purchase this intake manifold:

1. Increased Airflow: The Holley Hi-Ram intake manifold provides increased airflow compared to the factory intake manifold. This can lead to more power and improved engine performance.

2. Improved Idle Stability: The Holley Hi-Ram intake manifold is designed with a larger plenum and larger runners, which can help improve idle stability and reduce intake pulsation.

3. Better Fuel Distribution: The Holley Hi-Ram intake manifold features a unique fuel rail design that improves fuel distribution and helps eliminate fuel pressure drops across the cylinders.

4. Easy Installation: The Holley Hi-Ram intake manifold is relatively easy to install, with many users reporting that it can be completed in a few hours with basic hand tools.

1. Cost: The Holley Hi-Ram intake manifold is more expensive than the factory intake manifold. The cost may be a deterrent for some performance enthusiasts.

2. Requires Tuning: To get the most out of the Holley Hi-Ram intake manifold, it may require tuning to optimize the fuel and ignition systems for the new intake. This may involve additional costs and time.

3. Potential Fitment Issues: Some users have reported fitment issues with the Holley Hi-Ram intake manifold, particularly with the positioning of the throttle body and the clearance between the intake and other engine components.

In conclusion, the Holley EFI 300-229BK Hi-Ram Lower Manifold for GM LS7 engines offers several benefits, including increased airflow, improved idle stability, better fuel distribution, and easy installation. However, it also comes with some drawbacks, such as cost, the need for tuning, and potential fitment issues.

If you are looking to maximize power and performance from your LS7 engine and have the budget and resources to address any potential fitment or tuning challenges, then the Holley Hi-Ram intake manifold may be a worthy investment. On the other hand, if you are on a tighter budget or are not willing to deal with any potential installation or tuning challenges, then the factory intake manifold may be a better option for you. Ultimately, the decision is yours to make based on your specific needs and priorities.

Details:

The base is designed to be modular in configuration accept a wide range of carburetors and EFI tops attractive builders fabricators as the foundation for custom induction systems. 300-229BK Holley Hi-Ram Lower Manifold - GM LS7 Black: LS7 EFI Base Only. Coupling this Hi-Ram intake with the high flowing LS7 cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Buyer pays return shipping.

EFI fuel rails are machined for 8AN O-ring Fittings with passages large enough to accommodate high flows and dampen pressure pulsations in the system come standard Hi-Ram kits.The Holley GM LS7 Modular Intake Manifold is introduced as a cost effective alternative fabricated sheet-metal high-performance applications where induction height not limited. A signature is required on all UPS orders over $750. Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations Cast aluminum construction.

part #: 300229bk prices

• $920.66-$921.95

specifications inputmanifolds:

• for models: Ls7, Ram
• brand: Holley Efi
• part type: Manifold
• material: Aluminum
• color: Black
• upc: 090127059944
• manufacturer part number: 300-229BK

general inputmanifolds:

• Car Truck Parts Accessories > Air Fuel Delivery > Intake Manifolds
• condition: New

seller inputmanifolds:

• rating: 99.2%
• city: Bowling Green, Kentucky
• # reviews: 17163

payments inputmanifolds:

• credit card: Mastercard
• wallet: Paypal
• other

offer inputmanifolds:

• availability: In Stock
• quantity: 2
• options: Ship-to-home
• sold: 0
• started: October 31, 2025

returns inputmanifolds:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

shipping inputmanifolds:

• type: Fixed
• service: UPS Ground
• carrier: UPS
• transit: 3-6 Days
• class: Standard
• cost: $0.00

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