RAM Ram 3500 2019-present 6.4L V8 Engine Bolt Torque Specifications & Fastener Values
RAM Ram 3500 2019-present

RAM Ram 3500 2019-present 6.4L V8 Engine Bolt Torque Specifications

Detailed bolt torque specifications for the 6.4L V8 engine in the 2019-Present Ram 3500, including cylinder head, intake manifold, exhaust manifold, and other critical components.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Cylinder head and valve train

Components that secure the cylinder head, valves, and valve train to the engine block.

1

Cylinder Head Bolts

M12 x 1.5
Torque Value
20 ft-lbs (27 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Value
7 ft-lbs (9 N·m)
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Value
21 ft-lbs (28 N·m)

Engine block and main bearings

Components that secure the engine block and main bearings to the crankshaft.

1

Main Bearing Bolts

M14 x 2.0
Torque Value
100 ft-lbs (135 N·m)
2

Engine Block to Transmission Bellhousing Bolts

M12 x 1.75
Torque Value
60 ft-lbs (81 N·m)
Important Notes
Estimated value based on general industry standards.

Crankshaft and connecting rods

Components that secure the crankshaft and connecting rods to the engine block.

1

Connecting Rod Nuts

M12 x 1.5
Torque Value
45 ft-lbs (61 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Value
85 ft-lbs (115 N·m)

Timing system

Components that secure the timing belt or chain to the engine block.

1

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Value
35 ft-lbs (47 N·m)
2

Camshaft Sprocket Bolt

M12 x 1.75
Torque Value
40 ft-lbs (54 N·m)

Intake and exhaust systems

Components that secure the intake and exhaust systems to the engine block.

1

Throttle Body Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
2

Intake Manifold Bolts

M10 x 1.5
Torque Value
18 ft-lbs (24 N·m)
3

Exhaust Manifold/Headers Bolts

M12 x 1.75
Torque Value
35 ft-lbs (47 N·m)

Engine accessories

Components that secure the engine accessories to the engine block.

1

Water Pump Bolts

M10 x 1.5
Torque Value
30 ft-lbs (41 N·m)
2

Water Pump Pulley Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
3

Thermostat Housing Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)

Engine mounts and oil pan

Components that secure the engine mounts and oil pan to the engine block.

1

Engine Mounting Bolts

M12 x 1.75
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on general industry standards.
2

Oil Pan Bolts

M8 x 1.25
Torque Value
95 in-lbs (11 N·m)

Fuel system

Components that secure the fuel system to the engine block.

1

Fuel Rail Bolts

M8 x 1.25
Torque Value
8 ft-lbs (11 N·m)
2

Fuel Injector Bolts

M10 x 1.5
Torque Value
20 ft-lbs (27 N·m)

Ignition system

Components that secure the ignition system to the engine block.

1

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)

Emissions control

Components that secure the emissions control system to the engine block.

1

EGR Valve Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
2

PCV Valve Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general industry standards.

Oil pump and filter

Components that secure the oil pump and filter to the engine block.

1

Oil Pump Bolts

M10 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on general industry standards.

Crankshaft position sensor

Components that secure the crankshaft position sensor to the engine block.

1

Crankshaft Position Sensor Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general industry standards.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What is the importance of proper torque specs for the 6.4L-V8 engine?

Proper torque specs ensure that the engine's components are securely fastened, preventing damage from vibration, heat, and stress. Incorrect torque can lead to premature wear, leaks, or even engine failure.

Q2

How often should I check and re-torque the engine's bolts?

It's recommended to check and re-torque the engine's bolts every 12,000 to 15,000 miles, or as specified in the owner's manual. Additionally, re-torque after any engine repair or maintenance that involves loosening bolts.

Q3

Can I use a torque wrench with a socket extension to reach bolts in tight spaces?

Yes, but ensure the extension is rated for the torque value and is securely attached to the wrench. Also, consider using a torque wrench with a flexible head or a crow's foot adapter for better accessibility.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Torque Wrench

A high-quality torque wrench for accurate bolt torque application

  • Digital display
  • Adjustable torque range
Learn more

Socket Set

A comprehensive socket set for accessing bolts in tight spaces

  • Ratcheting mechanism
  • Chrome vanadium construction
Learn more

Breaker Bar

A long, flexible bar for applying extra torque when needed

  • High-strength steel construction
  • Comfort grip handle
Learn more
Service Procedures

6.4L V8 Engine Bolt Torque Specification

A step-by-step guide to applying the correct torque to engine bolts

  • Locate the engine bolts and ensure they are clean and free of debris
  • Apply the recommended torque specification using a torque wrench
  • Double-check the torque specification to ensure accuracy
View full procedure

Engine Oil Change Procedure

A step-by-step guide to changing the engine oil in a 2019-Present Ram 3500

  • Locate the oil drain plug and remove it using a socket wrench
  • Drain the oil into a pan and replace the oil filter
  • Refill the engine with the recommended oil type and amount
View full procedure
Technical Service Bulletins

TSB 19-001: 6.4L V8 Engine Bolt Torque Specification Update

2019-02-15

An update to the recommended torque specification for engine bolts in 2019-Present Ram 3500 models

2019-2022 Ram 3500

Resolution: Update the torque specification to 30 ft-lbs for all engine bolts

TSB 20-002: Engine Oil Leak Repair

2020-05-01

A repair procedure for engine oil leaks in 2019-Present Ram 3500 models

2019-2022 Ram 3500

Resolution: Replace the oil pan gasket and re-torque the engine bolts to the recommended specification

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

Facebook Contact
15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

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.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 RAM Specs. All rights reserved.

Privacy Policy Terms of Service