FiTech Melonized GM HEI .491 I.D. Distributor Gear (99803)

The FiTech Melonized GM HEI .491 I.D. Distributor Gear (99803) is a vital component designed to ensure the accurate and reliable operation of your engine's ignition system. This gear serves as a direct replacement part, meticulously engineered to meet or exceed original equipment specifications. Crafted from high-quality, melonized material, the 99803 offers enhanced wear resistance and longevity, contributing to the overall health and performance of your engine. Whether you're maintaining a classic muscle car or performing essential repairs, this distributor gear provides the precision and durability needed for optimal engine function.

KEY FEATURES AND BENEFITS:

• Direct Replacement: Engineered to fit seamlessly into compatible engine applications, eliminating the need for modifications and ensuring a straightforward installation process.
• Melonized Material: Constructed from melonized material, providing superior resistance to wear and tear compared to standard gears, extending the lifespan of the component.
• Precise Fitment: Features a 0.491-inch distributor shaft diameter, ensuring accurate engagement with the distributor and proper timing.
• Wide Compatibility: Designed for use in a variety of Chevrolet small block, big block, and GM V6 engines, as well as Ford small block, big block, Modified, and Cleveland engines manufactured from 1955 onwards.
• Maintains Engine Timing: Crucial for maintaining precise engine timing, which is essential for optimal combustion, power output, and fuel efficiency.
• Sold Individually: This listing is for a single distributor gear, allowing you to purchase the exact quantity needed for your specific application.

SPECIFICATIONS:

• Part Number: 99803
• Brand: FiTech Fuel Injection
• Part Type: Distributor Gear
• Product Line: FiTech Distributor Gears
• Distributor Shaft Diameter: 0.491 inches
• Distributor Gear Material: Melonized
• Drilling Required: No
• Roll Pin Included: No
• Quantity: Sold individually
• Compatibility:
  • Chevrolet Small Block Engines
  • Chevrolet Big Block Engines
  • GM V6 Engines
  • Ford Small Block Engines (1955+)
  • Ford Big Block Engines (1955+)
  • Ford Modified Engines (1955+)
  • Ford Cleveland Engines (1955+)

HOW TO USE:

1. Preparation: Ensure the engine is turned off and the ignition system is cool. Disconnect the negative battery terminal for safety.
2. Locate Distributor: Identify the distributor on your engine.
3. Remove Distributor Cap: Carefully remove the distributor cap, noting the orientation of the wires for reinstallation.
4. Mark Distributor Position: Before removing the distributor, mark its position relative to the engine block. This will aid in reinstalling the new gear and distributor in the correct orientation.
5. Remove Distributor: Unbolt and carefully remove the distributor from the engine.
6. Access Gear: The distributor gear is located at the base of the distributor shaft. You may need to remove a retaining pin or clip to access the gear.
7. Remove Old Gear: Carefully remove the old distributor gear. Note its orientation for installing the new gear correctly.
8. Install New Gear: Install the new FiTech 99803 distributor gear onto the distributor shaft, ensuring it is oriented correctly.
9. Secure Gear: Reinstall any retaining pins or clips that were removed.
10. Reinstall Distributor: Carefully reinstall the distributor into the engine, aligning it with the marks made earlier.
11. Reattach Distributor Cap: Reattach the distributor cap, ensuring the wires are connected in the correct order.
12. Reconnect Battery: Reconnect the negative battery terminal.
13. Verify Timing: After installation, it is highly recommended to check and adjust the engine timing to ensure optimal performance. Consult your vehicle's service manual for specific timing procedures.

BENEFITS OF USING THE FITECH MELONIZED GM HEI .491 I.D. DISTRIBUTOR GEAR (99803):

• Restores Proper Ignition Timing: Replacing a worn distributor gear ensures the distributor functions correctly, leading to accurate ignition timing.
• Improves Engine Performance: Proper timing is crucial for optimal engine performance, including power delivery, acceleration, and responsiveness.
• Enhances Fuel Efficiency: Accurate ignition timing contributes to more efficient combustion, potentially improving fuel economy.
• Ensures Reliable Engine Operation: A new, robust distributor gear helps prevent ignition system failures, contributing to overall engine reliability.
• Long-Lasting Performance: The melonized material provides increased resistance to wear, offering extended service life compared to standard gears.
• Simplified Installation: Designed as a direct replacement, the 99803 minimizes installation complexities, saving time and effort.

FEATURES:

• Engineered for Compatibility: Specifically designed to fit a broad range of classic and modern GM and Ford V8 and V6 engines.
• Durable Melonized Construction: The melonized surface treatment enhances the gear's hardness and resistance to friction.
• Precise Manufacturing: Manufactured to exact tolerances to ensure proper engagement and function within the distributor.
• Optimized Gear Tooth Design: Features a tooth profile designed for smooth and efficient transfer of rotational force from the camshaft.
• No Modifications Needed: Designed as a direct bolt-on replacement, eliminating the need for any modifications to the distributor or engine.
• Quality Assured: Manufactured by FiTech Fuel Injection, a reputable brand known for producing quality automotive performance parts.