The FiTech Ford 351W Mech. Adv. Distributor w/ Vacuum (99039) is designed for Ford 351W engines, providing precise ignition timing for improved engine performance. This distributor incorporates both mechanical and vacuum advance mechanisms, allowing for fine-tuned adjustments to optimize engine operation. It utilizes a magnetic trigger system and requires a compatible EFI system with a 2-wire mag trigger signal or a CDI ignition box for proper function.
KEY FEATURES AND BENEFITS:
- This distributor features a CNC-machined 6061-T6 aluminum housing for strength and durability.
- The centerless ground shaft, combined with an upper sealed bearing and lower Oil-Lite bushing, ensures smooth and reliable operation.
- Adjustable mechanical and vacuum advance systems allow for customizable timing curves.
- The magnetic pickup and reluctor provide a stable trigger signal.
- The cap and rotor, made from glass-filled polyester, offer high impact and dielectric strength.
- The hardened iron drive gear ensures long service life.
- Dual magnetic pickups provide a redundant ignition system.
SPECIFICATIONS:
- Engine Compatibility: Ford 351W (5.8L)
- Advance Type: Vacuum and Mechanical
- Trigger Style: Magnetic
- Ignition Box Required: Yes, or compatible EFI system
- Distributor Gear Material: Iron
- Distributor Cap Style: Male/HEI, Small cap
- Housing Material: Aluminum
HOW TO USE:
- Ensure the engine is turned off and cool.
- Disconnect the existing distributor’s electrical connections.
- Remove the old distributor from the engine.
- Install the FiTech 99039 Go Spark Distributor, aligning the drive gear correctly.
- Connect the distributor’s 2-wire magnetic pickup to the compatible EFI system or CDI ignition box.
- Adjust the mechanical and vacuum advance settings as needed for your engine’s requirements.
- Install the distributor cap and rotor.
- Verify the ignition timing using a timing light.
- Test the engine’s operation to confirm proper function.
BENEFITS OF USING THE FITECH FORD 351W MECH. ADV. DISTRIBUTOR W/ VACUUM (99039):
- Improved ignition timing accuracy, leading to enhanced engine performance.
- Adjustable advance systems allow for optimization of fuel economy and power output.
- Robust construction and high-quality components ensure reliability and long-term service.
- Redundant ignition system provides extra reliability.
FEATURES:
- Dual 2-wire magnetic pickups for signal redundancy.
- Small cap design for confined engine spaces.
- Melonized iron drive gear for extended wear.
- High output reluctor for strong signal.
- 30% glass filled PBT cap and rotor for dielectric strength.
- Brass cap contacts and stainless steel rotor spring for optimized conductivity.
- Centerless ground shaft for smooth operation.







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