Transmission Specifications
- Type: 3-speed automatic transmission
- Application: Used primarily in Ford and Mercury vehicles
- Weight: Approximately 120 lbs (54 kg)
- Fluid Type: Ford Mercon or equivalent automatic transmission fluid (ATF)
- Gear Ratios:
- 1st Gear: 2.46:1
- 2nd Gear: 1.46:1
- 3rd Gear: 1.00:1
- Torque Converter: Typically a non-lockup design; stall speed varies depending on engine and vehicle configuration
Fluid Capacities
- Fluid Capacity: Approximately 10-12 quarts, including the torque converter; varies with vehicle application
- Filter Change Interval: Recommended every 15,000-30,000 miles, or as specified in the vehicle’s service manual
Vehicles Featuring the C4 Transmission
The Ford C4 has been used in a wide range of vehicles, including:
- Ford Mustang (1967-1986)
- Ford F-Series trucks (1967-1986)
- Ford Fairlane (1966-1970)
- Ford Thunderbird (1967-1982)
- Mercury Cougar and Mercury Comet
Maintenance Specifications
- Regular Fluid Changes: Every 30,000 miles is a general guideline; check for debris and discoloration during service.
- Check Fluid Level: Regularly check the transmission fluid level with the engine warm and running.
- Inspect for Leaks: Look for signs of fluid leakage around the pan and seals.
- Filter Replacement: Replace the transmission filter during fluid changes for optimal performance.
Performance Tips
- Cooling System: Ensure the transmission cooler is functioning correctly to prevent overheating, especially in high-performance applications.
- Upgrade Options: Consider upgrading to a high-performance torque converter or using a shift kit for improved shift response.
Common Issues
- Slipping: May indicate low fluid levels or worn internal components.
- Harsh Shifting: Can be caused by low fluid, incorrect adjustments, or worn parts.
- Overheating: Monitor transmission temperature; install an auxiliary cooler if necessary for performance applications.