Free Shipping on Auto Parts Orders Over $75.                           Order by 11 PM EST for Same Day Shipping!

Edelbrock 35520 - Edelbrock Pro-Flo 2 EFI Systems

Edelbrock 35520 - Edelbrock Pro-Flo 2 EFI Systems
Edelbrock 35520 - Edelbrock Pro-Flo 2 EFI Systems

JEGS Part Number: 350-35520

Pro-Flo² EFI System
  • Big Block Chevy 396-502
  • With Rectangle Port heads
  • 4150 style flange
  • Up to 675HP
  • 60lb/hr injectors

    Edelbrock 35520 Details

    Big Block Chevy

    This system converts your 1965 & Later Mark VI and GEN V/VI rectangle-port big-block Chevy from carburetion to multi-point fuel injection, and delivers up to 675+ hp in the 1500 to 7000 rpm range. Ideal for street high-performance big-block applications with rectangle port heads, including GM crate engines. Fuel pump and fuel lines are not included. Edelbrock does offer several in-line fuel pumps to choose from, based on your engine's fuel demand. Fuel supply line and appropriate fittings are also available separately through Russell. Compatible with Edelbrock or factory large rectangle port heads. For non-emission engines. This is the same system used on Edelbrock's 675HP 555 c.i.d. EFI crate engine.

    Installation Notes:
  • Recommended intake gasket: Edelbrock 350-7202 or Jegs 555-210101
  • Manifold height: (A) 5.90'' , (B) 5.90''; Throttle body pad height = 5.90''
  • View Manifold ''A/B'' Measurement Guide.
  • Throttle body height: 2.52'' tall

  • Edelbrock Pro-Flo 2 EFI Systems

    The Edelbrock Pro-Flo² EFI System is the second generation version of Pro-Flo electronic fuel injection systems. This system has been upgraded with new powerful electronics featuring full-sequential injection and all the components you need to convert a carbureted engine to EFI.

    For non-emissions applications, each system includes:

  • Intake manifold with fuel injectors, fuel rails, and throttle body
  • Wiring harness
  • Engine control unit (ECU)
  • Narrowband O2 sensor
  • Handheld calibration module
  • Installation hardware
  • Pro-Flo² software

    Flash-Programmable ECU
    Engineered by EFI Technology, a world leader in advanced electronic engine management, this control unit features flash-programmable memory and full-sequential injection (individual injector firing). Flash memory allows multiple tuning options, including Map-N (Speed Density) and Alpha-N (Speed Throttle). Map-N references RPM (engine speed) against MAP (manifold absolute pressure) to determine fuel and spark requirements; Alpha-N references RPM against throttle position. A base calibration is preloaded, and base calibrations for common performance engines are on the included CD. Use Pro-Flo² software to create custom calibrations. Closed loop fuel targets with included narrowband or optional wideband O2 controller are also supported.

    Handheld Calibration Module
    Edelbrock pioneered tuning on-the-fly FI with the original Pro-Flo that featured an exclusive handheld calibration module. Also included with Pro-Flo², this unique module plugs into the ECU for fast access anytime. Save up to three calibrations. An easy-to-read display allows real-time adjustments without a computer. Initial calibration, however, must be loaded with Pro-Flo² software on a laptop or PC.

    Pro-Flo² Software
    If laptop tuning is preferred, use Pro-Flo² software to tune, save, and restore unlimited custom calibrations. Use ''I-link'' to connect online to Edelbrock Tech Support.

    Features: Original Pro-Flo vs. Pro-Flo²
    Flash-programmable ECU (no chip) has base calibration
    ECU requires base calibration chip
    Requires PC & included AC adapter for first-time base calibration selection
    Semi-sequential injection (paired injector firing)
    Full-sequential injection (individual injector firing)
    Map-N (Speed Density) tuning strategy for fuel and spark requirements
    Alpha-N (Speed Throttle) tuning strategy for fuel and spark requirements
    Closed loop fuel control
    Accepts one narrowband (included) or wideband O2 sensor
    Includes 1-bar MAP sensor (accepts 2-bar or 3-bar)
    Tune with handheld calibration module and store up to three base maps
    4x6 fuel and 3x6 spark tables on calibration module
    Real-time adjustments with module (or software once saved/cycled for ECU)
    Tune with laptop and store unlimited calibrations
    11x16 load and RPM tables on laptop/PC
    2-wire pulse width idle motor
    Adjustable rev limiter

    Note: Original Pro-Flo is being replaced by Pro-Flo². Upgrade kits also available to convert existing Pro-Flo kits to Pro-Flo² Specifications.

  • Edelbrock 35520

    Engine Make/Size
    Chevy Big Block (396-502)
    Fuel Rate
    Cylinder Head Type
    Rectangular Port
    Manufacturer's Part Number:
    ARP 135-2001 - ARP Intake Bolts/Studs
    Only $28.21

    Edelbrock 7202 - Edelbrock Intake Manifold Gaskets
    Only $19.10

    JEGS Performance Products 210101 - JEGS Intake Manifold Gaskets
    Only $18.99

    JEGS Performance Products 28030 - JEGS RTV Silicone Gasket Maker
    Only $5.99

    See All Items You Need