HOLLEY EFI 701R329B Engines LS1/LS2/LS6

( Brand: Holley Efi ), ( Type: Exhaust Manifold ), ( Color: White ), ( Manufacturer Part Number: 701R329B ), ( Material: Cast Iron ), ( Features: Coated ), ( Country/region Of Manufacture: Us ), ( Placement On Vehicle: Front ), ( Fuel Type: Gasoline )

Review HOLLEY EFI Hi Ls1/ls2/ls6 Engines fits RAM LS1 LS2 LS6

The Holley EFI 701R329B Fuel System Ram-Air Kit is a premium fuel system solution designed specifically for LS1, LS2, and LS6 engines. This kit is an essential upgrade for high-performance applications, providing improved fuel delivery and pressure to ensure optimal engine operation.

The 701R329B Ram-Air Kit comes with a 750-cfm Holley EFI 750-cfm EFI single-plane throttle body, which is a direct replacement for the factory throttle body on LS1, LS2, and LS6 engines. This throttle body features a large, 750-cfm bore, allowing for increased fuel flow and improved airflow through the intake manifold.

The kit also includes a high-performance fuel pump, capable of delivering 340 lph (90 gpm) of fuel to the engine. The pump is designed with a billet housing and features a 3-stage, 12-micron fuel filter, ensuring that only clean fuel reaches the engine.

Moreover, this Holley EFI kit includes a custom-designed, 2.3-liter fuel tank with an integrated fuel pressure regulator. The fuel tank is constructed using a high-density polyethylene material, which is both lightweight and resistant to corrosion. The tank also features a baffled design, reducing fuel slosh and improving fuel pressure stability.

The 701R329B Ram-Air Kit is designed for use with Holley EFI's EFI management systems, such as the Holley EFI Dominator or Holley EFI HP. This allows for easy tuning and monitoring of fuel pressure, air/fuel ratio, and other critical engine parameters.

Additionally, the kit comes with a custom-designed, ram-air fuel pressure regulator, which utilizes a positive-pressure venturi design to maintain consistent fuel pressure during high-speed operation. This regulator also features an adjustable fuel pressure range of 35-70 psi, allowing for fine-tuning to meet the specific requirements of your high-performance engine.

The Holley EFI 701R329B Ram-Air Kit is a comprehensive fuel system solution for LS1, LS2, and LS6 engines, delivering improved fuel delivery and pressure for enhanced engine performance. This kit is designed for use in high-performance applications and is a must-have for any serious enthusiast looking to unlock the full potential of their LS engine.

Holley EFI 701 R329B Ram is a popular fuel injection system for LS1, LS2, and LS6 engines. Here are some pros and cons of buying this fuel injection system:

1. Improved Fuel Efficiency: Holley EFI systems are known for their ability to improve fuel efficiency compared to carbureted setups. The 701 R329B Ram is no exception, providing precise fuel delivery and eliminating the need for constant fuel enrichment.

2. Easy-to-Use Interface: The Holley EFI system comes with an easy-to-use interface that allows users to adjust fuel tables, timing, and other parameters. The system also includes a built-in wideband oxygen sensor, making it easy to monitor air/fuel ratios in real-time.

3. Flex Fuel Capable: The Holley EFI 701 R329B Ram is flex fuel capable, meaning it can run on both gasoline and ethanol. This makes it an excellent choice for those who want the flexibility to switch between fuel types.

4. Reliable: Holley EFI systems are known for their reliability and durability. The 701 R329B Ram is no exception, with a robust design and high-quality components that can withstand the demands of high-performance applications.

5. Wide Compatibility: The Holley EFI 701 R329B Ram is compatible with a wide range of LS engines, including LS1, LS2, and LS6. It also supports various transmission types, making it a versatile choice for building a custom LS engine.

1. Cost: The Holley EFI 701 R329B Ram is a high-performance fuel injection system, and the cost reflects its capabilities. Compared to a carbureted setup or a less expensive EFI system, the Holley EFI 701 R329B Ram may be more expensive.

2. Complex Installation: The installation of the Holley EFI 701 R329B Ram can be complex, especially for those without prior EFI experience. The system requires a significant amount of wiring and tuning to get it running optimally.

3. Requires Tuning: The Holley EFI 701 R329B Ram requires extensive tuning to get the best performance from your engine. This can be a time-consuming and sometimes frustrating process for those without the necessary skills or resources.

The Holley EFI 701 R329B Ram is a high-performance fuel injection system that offers numerous benefits for LS engine enthusiasts. It provides improved fuel efficiency, easy-to-use interface, flex fuel capability, reliability, and wide compatibility. However, it also comes with a high cost, complex installation, and the requirement for extensive tuning.

If you're looking for a high-performance fuel injection system for your LS engine, the Holley EFI 701 R329B Ram is an excellent choice. However, it's essential to understand the cons and be prepared for the installation and tuning process. If the cost and complexity are a concern, you may want to consider a less expensive EFI system or a carbureted setup. Ultimately, the decision comes down to your budget, experience level, and desired performance gains.

part # 701r329b prices

• $215.00-$985.60

specifications maniheader:

• for models: Ls1, Ls2, Ls6, Ram
• brand: Holley Efi
• type: Exhaust Manifold
• color: White
• manufacturer part number: 701R329B
• material: Cast Iron
• features: Coated
• country/region of manufacture: Us
• placement on vehicle: Front
• fuel type: Gasoline

seller maniheader:

• # reviews: 2
• rating: 100.0%

returns maniheader:

• policy: No Returns

general maniheader:

• Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
• condition: New other see details

offer maniheader:

• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: April 28, 2025

shipping maniheader:

• class: Standard
• carrier: USPS
• type: Calculated
• transit: 5-11 Days
• service: USPS Ground Advantage
• cost: $40.85

payments maniheader:

• wallet: Apple-pay
• credit card: Mastercard
• other

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