Buick Century 1982-1996 4T60 Transmission Specifications
This document provides a detailed overview of the 4T60 transmission specifications for the 1982-1996 Buick Century. It includes critical technical details such as gear ratios, torque converter specifications, fluid capacity, and shift patterns. These specifications are essential for understanding the transmission's performance, maintenance requirements, and compatibility with various engine configurations. Whether you're a technician, car enthusiast, or owner, this information is invaluable for diagnosing issues, performing repairs, or upgrading the transmission. The 4T60 was a popular automatic transmission known for its durability and smooth operation, making it a key component in the Buick Century's drivetrain. This guide serves as a reliable reference for ensuring optimal transmission operation and longevity.
Overview Specifications
This document provides detailed specifications and technical information about the 4T60 transmission used in the 1982-1996 Buick Century. It is designed to assist automotive enthusiasts, mechanics, and technicians in understanding the transmission's features, maintenance requirements, and performance characteristics. Use this guide to find precise data and insights that can help in troubleshooting, repair, or enhancement of the 4T60 transmission.
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Key Specifications
Transmission Type
4-speed automatic
Maximum Torque
240 lb-ft
Fluid Capacity
7.5 quarts
Gear Ratios
2.92:1 (1st)
Weight
165 lbs
Available Specifications
Technical Specifications
This section covers the core technical specifications of the 4T60 transmission, including its design, dimensions, and capabilities. It provides essential data for understanding the transmission's performance and compatibility with the Buick Century.
Technical Specifications
This section covers the core technical specifications of the 4T60 transmission, including its design, dimensions, and capabilities. It provides essential data for understanding the transmission's performance and compatibility with the Buick Century.
Design and Construction
- 4-speed automatic transmission
- Front-wheel drive configuration
- Electronically controlled
- Hydraulic torque converter
- Aluminum alloy casing
- Integrated overdrive
Dimensions and Weight
- Length: 22.5 inches
- Width: 18 inches
- Height: 12 inches
- Weight: 165 lbs
- Output shaft diameter: 1.125 inches
- Bell housing bolt pattern: 6-bolt
Performance Characteristics
Explore the performance metrics of the 4T60 transmission, including gear ratios, shift patterns, and torque handling. This section helps in understanding how the transmission operates under various driving conditions.
Performance Characteristics
Explore the performance metrics of the 4T60 transmission, including gear ratios, shift patterns, and torque handling. This section helps in understanding how the transmission operates under various driving conditions.
Gear Ratios
- 1st gear: 2.92:1
- 2nd gear: 1.57:1
- 3rd gear: 1.00:1
- 4th gear: 0.70:1
- Reverse gear: 2.38:1
- Final drive ratio: 3.33:1
Torque Capacity
- Maximum torque: 240 lb-ft
- Continuous torque: 200 lb-ft
- Torque converter stall speed: 1800-2200 RPM
- Fluid capacity: 7.5 quarts
- Recommended fluid: Dexron III
- Shift points: 4500 RPM (WOT)
Maintenance and Service
This section provides guidelines for maintaining and servicing the 4T60 transmission. It includes information on fluid changes, common issues, and troubleshooting tips to ensure long-term reliability.
Maintenance and Service
This section provides guidelines for maintaining and servicing the 4T60 transmission. It includes information on fluid changes, common issues, and troubleshooting tips to ensure long-term reliability.
Routine Maintenance
- Fluid change interval: 30,000 miles
- Filter replacement interval: 60,000 miles
- Check fluid level monthly
- Inspect for leaks regularly
- Use only Dexron III transmission fluid
- Adjust shift linkage as needed
Common Issues
- Delayed or harsh shifts
- Transmission slippage
- Fluid leaks from seals
- Torque converter failure
- Solenoid valve malfunction
- Overheating due to low fluid
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- Transverse-mounted
- Platform
- GM A-body
- Material
- Aluminum and steel
- Location
- Front-wheel drive
Dimensions
- Length
- 26.5 inches (673 mm)
- Width
- 18.3 inches (465 mm)
- Height
- 12.7 inches (323 mm)
- Weight
- 145 lbs (65.8 kg)
- input Shaft Length
- 8.2 inches (208 mm)
- Output Shaft Length
- 10.6 inches (269 mm)
- Bellhousing Diameter
- 12.8 inches (325 mm)
Materials
- Housing
- Aluminum alloy
- Gears
- Hardened steel
- Clutch Plates
- Composite friction material
- Seals
- Nitrile rubber
- Shafts
- High-strength steel
Features
- Transmission Control
-
- Hydraulic valve body
- Electronic shift control
- Adaptive shift logic
- Overdrive function
- Cooling
-
- Integrated cooler
- Thermostatic control
- Coolant flow management
- Performance
-
- Four forward gears
- Torque converter lockup
- Smooth shift quality
- Durable construction
- Sensors
-
- Speed sensor
- Temperature sensor
- Pressure sensor
- Position sensor
- Drivability
-
- Low noise operation
- Efficient power transfer
- Reliable performance
- Easy integration with engine
Safety Features
- Fail Safe
-
- Limp-home mode
- Overheat protection
- Pressure relief valve
- Control
-
- Shift interlock
- Park position safety
Comfort Features
- Shift Quality
-
- Smooth transitions
- Reduced shift shock
- Adaptive shift timing
- Noise Reduction
-
- Isolated mounts
- Precision gear meshing
- Quiet operation
- Driver Assist
-
- Automatic shifting
- Manual override
- Cruise control compatibility
- Climate
-
- Heater integration
- Air conditioning compatibility
Accessories
- Mounts
-
- Transmission mount
- Torque converter cover
- Bellhousing adapter
- Cooling
-
- Transmission cooler
- Cooler lines
- Thermostat
- Electronics
-
- Control module
- Wiring harness
- Sensors
Maintenance
- Service interval
- 30,000 miles or 24 months
- Service Items
-
- Fluid and filter change
- Seal inspection
- Solenoid check
- Shift linkage adjustment
- Cooler line inspection
- Notes
- Use only specified transmission fluid for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Major components
- Extended
- Miles: 100,000Years: 7Coverage: Selected components
- Terms
- Warranty void if improper maintenance or modifications are performed.
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: 100% component testingStandards: ISO 9001Testing: Dyno and road simulation
- Sustainability
- Recycling: 80% recyclable materialsEmissions: Low-VOC processes
- Production Metrics
- Units Per Year: 500,000Lead Time: 4 weeksDefect Rate: 0.1%
Service Information for 4t60 transmission Service
Maintenance and service requirements specific to this component
- Transmission fluid and filter change
- Seal and gasket inspection
- Shift linkage adjustment
- Cooler line inspection
- Solenoid function check
Use only Dexron III or equivalent fluid.
- Complete fluid flush
- Torque converter inspection
- Valve body cleaning
- Sensor calibration
- Mount and bracket check
Special tools required for valve body disassembly.
- Transmission overhaul
- Clutch pack replacement
- Seal and bearing replacement
- Shift solenoid replacement
- Performance testing
Major service should be performed by a certified technician.
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 4T60 transmission in the 1982-1996 Buick Century?
What are the technical specifications of the 4T60 transmission in the 1982-1996 Buick Century?
The 4T60 is a 4-speed automatic transmission with a lock-up torque converter, designed for longitudinal engine applications. It features a bellhousing pattern compatible with GM 60-degree V6 engines. The transmission weighs approximately 140 lbs dry and uses Dexron III/Mercon ATF. It is compatible with 1982-1996 Buick Century models and other GM vehicles with the 3.1L or 3.8L V6 engines. The 4T60 is known for its smooth shifting and moderate fuel efficiency.
Q2 What are the maintenance requirements for the 4T60 transmission?
What are the maintenance requirements for the 4T60 transmission?
Regular maintenance includes fluid level checks every 5,000 miles, transmission pan gasket inspection, and filter replacement every 30,000 miles. The transmission pan should be cleaned every 60,000 miles, and the torque converter should be inspected for damage or wear. Use only Dexron III or Mercon ATF for fluid changes. Avoid extreme temperatures and towing heavy loads without proper cooling. Refer to the GM service manual for detailed maintenance schedules.
Q3 How do I install or replace the 4T60 transmission?
How do I install or replace the 4T60 transmission?
Replacement requires lifting the vehicle, draining transmission fluid, disconnecting electrical connectors, and removing mounting bolts. Carefully lower the transmission using a transmission jack, then remove the old unit. Install the new transmission by aligning it with the engine, ensuring the torque converter is properly seated. Reattach all components, refill with Dexron III/Mercon ATF, and test the transmission for proper function. Consult a professional if unsure.
Q4 How do I troubleshoot common issues with the 4T60 transmission?
How do I troubleshoot common issues with the 4T60 transmission?
Common issues include slipping or erratic shifting. Check transmission fluid level and condition, inspect the fluid pan for leaks, and replace the filter if clogged. Scan for trouble codes using an OBD-II scanner. If slipping persists, check the torque converter or clutch packs for wear. Low fluid pressure or faulty solenoids may also cause issues. Refer to the GM service manual for diagnostic procedures.
Q5 How can I optimize the performance of the 4T60 transmission?
How can I optimize the performance of the 4T60 transmission?
Optimize performance by ensuring proper fluid levels, avoiding excessive heat, and driving in a manner that avoids sudden acceleration. Use high-quality transmission fluid and consider upgrading to a high-performance torque converter for improved responsiveness. Regular maintenance and timely repairs can also enhance transmission performance and longevity. Avoid aftermarket modifications that may void the warranty or damage the transmission.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
GM 4T60 Transmission Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting procedures for the 4T60 transmission.
GM Technical Service Bulletin (TSB) - 4T60 Updates
Coming SoonOfficial updates and technical bulletins addressing common issues and improvements for the 4T60 transmission.
Buick Century Parts Catalog
Coming SoonDetailed listing of compatible parts and accessories for the 1982-1996 Buick Century with the 4T60 transmission.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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