Dodge Ram 3500 1981-1993 Drivetrain Specifications
Explore the detailed drivetrain specifications for the 1981-1993 Dodge RAM-3500, including engine options, transmission types, axle configurations, and more. Essential for maintenance, repairs, and upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the drivetrain of the 1981-1993 Dodge RAM-3500. It is designed to assist enthusiasts, mechanics, and owners in understanding the vehicle's drivetrain components, configurations, and performance characteristics. Use the search and navigation instructions to quickly locate specific details or browse through the sections for comprehensive insights.
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Key Specifications
Transmission Options
4-speed manual, 5-speed manual, 3-speed auto, 4-speed auto
Transfer Case Gear Ratio
2.62:1 (low-range)
Front Axle
Dana 44 or Dana 60
Rear Axle
Dana 60 or Dana 70
Driveshaft Type
Two-piece steel
Available Specifications
Transmission Options
This section covers the transmission configurations available for the 1981-1993 Dodge RAM-3500, including manual and automatic options. It provides details on gear ratios, shift patterns, and compatibility with different engine models.
Transmission Options
This section covers the transmission configurations available for the 1981-1993 Dodge RAM-3500, including manual and automatic options. It provides details on gear ratios, shift patterns, and compatibility with different engine models.
Manual Transmission
- 4-speed manual transmission standard on base models
- Gear ratios: 1st - 6.68:1, 2nd - 3.34:1, 3rd - 1.66:1, 4th - 1.00:1
- Heavy-duty clutch system for improved durability
- Optional 5-speed manual transmission on later models
Automatic Transmission
- 3-speed TorqueFlite automatic transmission available
- Gear ratios: 1st - 2.45:1, 2nd - 1.45:1, 3rd - 1.00:1
- Lock-up torque converter for improved fuel efficiency
- Optional 4-speed automatic transmission on later models
Transfer Case
This section details the transfer case options for 4x4 models of the Dodge RAM-3500. It includes information on gear reduction, shift mechanisms, and compatibility with different drivetrain setups.
Transfer Case
This section details the transfer case options for 4x4 models of the Dodge RAM-3500. It includes information on gear reduction, shift mechanisms, and compatibility with different drivetrain setups.
Part-Time 4WD Transfer Case
- Standard part-time 4WD system with manual shift lever
- Low-range gear ratio of 2.62:1 for off-road capability
- Chain-driven design for durability
- Optional shift-on-the-fly capability on later models
Full-Time 4WD Transfer Case
- Available on select models for continuous 4WD operation
- Center differential for improved on-road handling
- Low-range gear ratio of 2.72:1
- Automatic locking hubs on some configurations
Axle Configurations
This section provides information on the axle configurations available for the Dodge RAM-3500, including gear ratios, differential types, and load capacities.
Axle Configurations
This section provides information on the axle configurations available for the Dodge RAM-3500, including gear ratios, differential types, and load capacities.
Front Axle
- Dana 44 or Dana 60 front axle on 4x4 models
- Standard open differential with optional limited-slip
- Gear ratios ranging from 3.54:1 to 4.10:1
- Heavy-duty axle shafts for towing and hauling
Rear Axle
- Dana 60 or Dana 70 rear axle standard
- Optional limited-slip or locking differential
- Gear ratios ranging from 3.54:1 to 4.56:1
- Dual rear wheels on 3500 models for increased load capacity
Driveshaft and U-Joints
This section covers the driveshaft and universal joint (U-joint) configurations used in the Dodge RAM-3500, including materials, sizes, and maintenance considerations.
Driveshaft and U-Joints
This section covers the driveshaft and universal joint (U-joint) configurations used in the Dodge RAM-3500, including materials, sizes, and maintenance considerations.
Driveshaft
- Two-piece driveshaft on long-wheelbase models
- Heavy-duty steel construction for durability
- Balanced for smooth operation at high speeds
- Replaceable U-joints for easy maintenance
U-Joints
- Spicer U-joints standard on all models
- Greaseable fittings for extended service life
- High-strength design for heavy-duty applications
- Compatible with aftermarket upgrades
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Component Specifications
Overview
- Type
- 4x4 or 4x2
- Configuration
- Front-engine, rear-wheel drive or four-wheel drive
- Platform
- Heavy-duty truck
- Material
- Steel and aluminum components
- Location
- Underbody, center-mounted
Dimensions
- Driveshaft Length
- 72.5 inches (1841.5 mm)
- Transfer Case Width
- 14.2 inches (360.7 mm)
- Axle Track Width
- 63.5 inches (1612.9 mm)
- Differential Gear Ratio
- 3.55:1 or 4.10:1
- Transmission Length
- 31.8 inches (807.7 mm)
- Transfer Case Ground Clearance
- 10.6 inches (269.2 mm)
- Driveshaft Diameter
- 3.5 inches (88.9 mm)
Materials
- Driveshaft
- High-strength steel
- Differential Housing
- Cast iron
- Axle Shafts
- Forged steel
- Transfer Case
- Aluminum alloy
- Transmission Case
- Aluminum alloy
Features
- Transmission
-
- 4-speed manual or 3-speed automatic
- Synchromesh gears
- Heavy-duty clutch
- Overdrive option (manual)
- Transfer Case
-
- Part-time 4WD
- Manual shift lever
- 2-speed gear reduction
- Chain-driven
- Differential
-
- Limited-slip rear differential
- Heavy-duty axle shafts
- Ring and pinion gearset
- Sealed bearings
- Driveshaft
-
- Two-piece design
- U-joints with grease fittings
- Balanced for high-speed operation
- Spline connection to transfer case
- Suspension integration
-
- Leaf spring rear suspension
- Solid front axle
- Heavy-duty shock absorbers
- Stabilizer bar
Safety Features
- Braking
-
- Drum brakes (rear)
- Disc brakes (front)
- Parking brake integrated with rear drums
- Stability
-
- Heavy-duty frame
- Reinforced axle housings
- Low center of gravity
- Control
-
- Power steering
- Manual locking hubs
- 4WD engagement indicator
Comfort Features
- Noise Reduction
-
- Insulated transmission tunnel
- Rubber-mounted drivetrain components
- Balanced driveshaft
- Vibration Control
-
- Heavy-duty engine mounts
- Dampened U-joints
- Rubber isolators
- Ergonomics
-
- Floor-mounted shifter
- Transfer case lever within reach
- Clutch pedal with adjustable travel
- Climate Adaptation
-
- Heated transfer case option
- Cold-weather lubricants
- Sealed bearings for water resistance
Accessories
- Performance
-
- Heavy-duty clutch kit
- Upgraded U-joints
- Limited-slip differential
- Reinforced driveshaft
- Protection
-
- Skid plates
- Axle guards
- Transfer case shield
- Driveshaft loop
- Utility
-
- PTO (Power Take-Off) option
- Winch-ready front bumper
- Heavy-duty tow package
- Trailer brake controller
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Check and refill differential fluid
- Inspect U-joints and driveshaft
- Lubricate slip yoke
- Check transfer case fluid level
- Inspect axle seals for leaks
- Check transmission fluid level
- Maintenance Notes
- Use GL-5 gear oil for differentials and transfer case. Inspect drivetrain components for wear during tire rotation.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Drivetrain components
- Corrosion
- Miles: 100,000Years: 7Coverage: Perforation only
- Emissions
- Miles: 50,000Years: 5Coverage: Federal emissions components
Production Details
- Manufacturer
- Chrysler Corporation
- Manufacturing Process
-
- Casting of differential housings
- Forging of axle shafts
- Machining of transmission components
- Heat treatment of gears
- Quality Control
- inspection: 100% component testingTesting: Durability testing, Noise and vibration analysis, Thermal cyclingCertifications: SAE standards compliance, DOT safety standards
- Sustainability Practices
-
- Recycled steel in components
- Closed-loop manufacturing
- Waste reduction initiatives
- Production Metrics
- Units Per Day: 150Defect Rate: 0.5%Lead Time: 6 weeks
Service Information for drivetrain Service
Maintenance and service requirements specific to this component
- Inspect U-joints and driveshaft
- Check differential fluid level
- Lubricate slip yoke
- Inspect axle seals
- Check transfer case fluid level
Use only manufacturer-recommended fluids
- Replace differential fluid
- Inspect transmission mounts
- Check driveshaft balance
- Inspect transfer case chain
- Test 4WD engagement
Special tools required for transfer case service
- Replace U-joints
- Inspect and repack wheel bearings
- Check ring and pinion gear wear
- Replace transfer case fluid
- Inspect clutch components
Major service may require drivetrain removal
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What drivetrain components are compatible with the 1981-1993 Dodge RAM-3500?
What drivetrain components are compatible with the 1981-1993 Dodge RAM-3500?
The 1981-1993 Dodge RAM-3500 typically features a 4x2 or 4x4 drivetrain configuration, with options for manual or automatic transmissions. Compatible components include the NP435 4-speed manual transmission, 727 TorqueFlite automatic transmission, and Dana 60 or Dana 70 rear axles. Ensure compatibility by verifying the vehicle's VIN and consulting the manufacturer's specifications before purchasing replacement parts.
Q2 What are the maintenance requirements for the RAM-3500 drivetrain?
What are the maintenance requirements for the RAM-3500 drivetrain?
Regular maintenance for the RAM-3500 drivetrain includes checking and replacing transmission fluid every 30,000 miles, inspecting U-joints and driveshafts for wear, and greasing the slip yoke. Differential fluid should be changed every 50,000 miles. Regularly inspect the transfer case for leaks and ensure proper lubrication. Follow the manufacturer's maintenance schedule for optimal performance and longevity.
Q3 How do I replace the driveshaft on a 1981-1993 Dodge RAM-3500?
How do I replace the driveshaft on a 1981-1993 Dodge RAM-3500?
To replace the driveshaft, first, secure the vehicle on a flat surface and engage the parking brake. Remove the bolts securing the driveshaft to the differential and transfer case. Mark the driveshaft orientation for reinstallation. Slide the driveshaft out and install the new one, ensuring proper alignment. Reattach the bolts and torque them to the manufacturer's specifications. Test the vehicle for proper operation.
Q4 What should I do if my RAM-3500 drivetrain is making unusual noises?
What should I do if my RAM-3500 drivetrain is making unusual noises?
Unusual noises may indicate worn U-joints, a failing transmission, or differential issues. Inspect the U-joints for play or rust. Check the transmission and differential fluid levels and condition. Listen for grinding or whining sounds, which may suggest bearing failure. If the issue persists, consult a professional mechanic for a thorough diagnosis and repair.
Q5 How can I optimize the performance of my RAM-3500 drivetrain?
How can I optimize the performance of my RAM-3500 drivetrain?
To optimize drivetrain performance, use high-quality synthetic fluids for the transmission and differential. Upgrade to heavy-duty U-joints and driveshafts if towing or hauling heavy loads. Ensure proper alignment and balance of the driveshaft. Regularly inspect and maintain all drivetrain components. Consider installing a performance torque converter for improved acceleration and towing capacity.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1981-1993 Dodge RAM-3500 Service Manual
Coming SoonComprehensive guide covering drivetrain maintenance, repair, and specifications for the 1981-1993 Dodge RAM-3500.
Technical Service Bulletin: Drivetrain Updates
Coming SoonOfficial bulletin detailing updates and fixes for common drivetrain issues in the 1981-1993 Dodge RAM-3500.
Dodge RAM-3500 Parts and Accessories Catalog
Coming SoonCatalog listing OEM and aftermarket drivetrain parts and accessories for the 1981-1993 Dodge RAM-3500.
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Technical Information
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