FiTech Chevy V8 EFI Dual Sync Hall Effect Distributor (99565)

The FiTech Chevy V8 EFI Dual Sync Hall Effect Distributor (99565) is a crucial component for achieving optimal performance with electronic fuel injection (EFI) systems. Designed with precision and reliability in mind, this distributor provides the necessary crank and cam position signals required for sequential fuel injection and coil-on-plug ignition setups. Its compact, small cap design allows for installation in a variety of engine compartments, while its robust construction ensures long-lasting operation. The integrated HEI-style connection simplifies wiring, and the melonized gear offers broad compatibility with different camshaft types. This distributor is specifically engineered for Chevrolet big and small block engines and works in conjunction with an external ignition control module or EFI system to manage ignition timing.

KEY FEATURES AND BENEFITS:

• Dual Sync Capability: Provides both crank and cam position signals, essential for sequential EFI systems to accurately control fuel delivery and ignition timing, leading to improved engine efficiency and performance.
• Hall Effect Trigger: Ensures accurate and consistent timing signals, even at high RPMs, contributing to stable engine operation.
• Small Cap HEI Style: The compact design allows for fitment in tighter engine spaces compared to larger distributors, while the HEI-style connection simplifies wiring.
• Melonized Distributor Gear: Offers compatibility with both flat tappet and hydraulic roller camshafts, reducing wear and extending the life of both the distributor gear and the camshaft.
• Aluminum Housing: Provides a lightweight yet strong housing that also aids in heat dissipation, contributing to the longevity of the distributor.
• Slip Collar: Facilitates easier installation and precise adjustment of the distributor during setup, allowing for optimal rotor phasing.

SPECIFICATIONS:

• Brand: FiTech Fuel Injection
• Manufacturer Part Number: 99565
• Part Type: Distributors
• Distributor Cap Included: Yes
• Distributor Cap Style: Male/HEI
• Distributor Cap Type: Small cap
• Ignition Coil Included: No
• Ignition Module Included: No
• Computer-Controlled Compatible: No (The distributor itself)
• Trigger Style: Hall effect
• Advance Type: Computer-controlled (Requires external computer)
• Ignition Box Required: Yes
• Mechanical Tach Drive: No
• Slip Collar: Yes
• Distributor Gear Material: Melonized
• Distributor Gear Rotation: Standard
• Distributor Cap Color: Black
• Housing Material: Aluminum
• Housing Finish: Natural
• Marine Use: No
• Remanufactured: No
• Quantity: Sold individually
• Compatibility: Chevrolet Big Block Engines, Chevrolet Small Block Engines

HOW TO USE:

• Preparation: Ensure the engine is turned off and the battery is disconnected. Gather all necessary tools, including wrenches, sockets, timing light, and the EFI system’s wiring harness.
• Remove Old Distributor (If Applicable): If replacing an existing distributor, carefully note the position of the rotor and the distributor housing before removal. This can help as a reference point for installing the new distributor.
• Install the FiTech Distributor:
  • Align the oil pump shaft to the correct position.
  • Install the FiTech distributor, ensuring the rotor is pointing in the correct direction (typically towards the #1 spark plug terminal on the distributor cap) when the engine is at Top Dead Center (TDC) on the compression stroke of the #1 cylinder.
  • Use the slip collar to fine-tune the distributor’s position as needed.
• Connect Wiring: Connect the wiring from the FiTech distributor to the EFI system’s ECU or the required external ignition box according to the manufacturer’s instructions. This typically involves connecting the Hall effect sensor wires.
• Install Distributor Cap and Spark Plug Wires: Install the distributor cap and connect the spark plug wires in the correct firing order for your engine.
• Set Initial Timing: Using a timing light, set the initial ignition timing as recommended by the EFI system manufacturer. This often involves slightly loosening the distributor hold-down clamp and rotating the distributor while the engine is running at idle.
• Secure Distributor: Once the initial timing is set, tighten the distributor hold-down clamp.
• Final Adjustments: The EFI system’s ECU will handle further timing adjustments based on engine load and RPM. Refer to the EFI system’s documentation for any specific software settings or adjustments related to the distributor.
• Testing: Start the engine and verify proper operation. Check for any error codes from the EFI system.

BENEFITS OF USING THE FITECH CHEVY V8 EFI DUAL SYNC HALL EFFECT DISTRIBUTOR (99565):

• Enhanced Engine Performance: The precise timing control enabled by the dual-sync design and Hall effect trigger contributes to improved horsepower, torque, and throttle response.
• Improved Fuel Efficiency: Accurate fuel delivery, a key benefit of sequential EFI, is made possible by the precise crank and cam signals provided by this distributor.
• Reliable Ignition: The Hall effect trigger and quality construction ensure consistent and reliable ignition performance across various engine speeds and conditions.
• Simplified Installation: The HEI-style connection can streamline the wiring process when used with compatible EFI systems.
• Camshaft Compatibility: The melonized gear allows for use with a wide range of camshaft materials, providing flexibility for engine builders.
• Durable Construction: The aluminum housing and quality internal components are designed for long-term reliability.

FEATURES:

• CNC Machined 6061 T-6 Aluminum Housing: Provides strength and heat dissipation.
• Centerless Ground Shaft: Rides on an upper sealed roller or ball bearing for smooth operation.
• Extended Length Lower Bronze Oil-Lite Bushing: Ensures stability at high RPMs.
• Melonized or Hardened Iron Drive Gear: Provides extended service life.
• High-Output Magnetic Pickups: Paddle wheel reluctors ensure strong and stable trigger signals.
• Durable Cap and Rotor: Made from 30% glass-filled polyester (PBT) for high impact strength and resistance to carbon tracking.
• Brass Cap Contacts and Stainless Steel Rotor Spring: Ensures maximum conductivity.
• Dual 2-Wire Magnetic Pickup Models Available: Pickups are placed 180 degrees apart for a redundant ignition system (Note: The 99565 is not explicitly stated as a dual pickup model).
• Height Adjustment for Deck Height Differences: (Not confirmed for the 99565 model).