detroit locker vs detroit truetrac

Detroit Locker vs. Detroit Truetrac: Which is Right for You?

Detroit Lockers and Detroit Truetracs are both types of limited-slip differentials designed to improve traction in off-road and high-performance applications. Choosing between them depends on your specific needs and driving style, as one prioritizes maximum traction while the other offers a more streetable driving experience.

What is a Detroit Locker?

A Detroit Locker is an automatic, mechanically locking differential. It provides 100% of the available torque to the wheel with the most traction. During straight-line driving, it acts as a spool, locking both axles together for maximum grip. When cornering, it allows the outside wheel to rotate faster than the inside wheel, preventing binding and tire chirp. However, this unlocking action can be abrupt and noticeable, especially on pavement.

What is a Detroit Truetrac?

The Detroit Truetrac is a gear-based, torque-biasing differential. Unlike the Detroit Locker, it doesn’t use clutches or locking mechanisms. Instead, it uses a series of worm gears to transfer torque to the wheel with the most traction. The Truetrac provides a smoother, more progressive engagement than the Detroit Locker, making it more suitable for daily driving. It allows for some differential action even under load, reducing wheel hop and improving handling on slippery surfaces. For more information about **limited-slip differentials** read the Wikipedia article.

Key Differences: Locker vs. Truetrac

On-Road Performance

The Detroit Locker can be harsh on pavement. Its abrupt locking and unlocking can cause chirping tires, increased wear, and unpredictable handling, especially in wet or icy conditions. The Detroit Truetrac offers a significantly smoother and quieter on-road experience. Its progressive torque transfer minimizes wheel hop and allows for more predictable handling.

Off-Road Performance

The Detroit Locker excels off-road. Its ability to provide 100% lockup ensures maximum traction in challenging terrain. While the Detroit Truetrac enhances traction compared to an open differential, it might not offer the same level of extreme grip as the Detroit Locker in very demanding situations.

Noise and Drivability

The Detroit Locker is known for its distinctive clicking and popping noises during cornering. The Truetrac operates much more quietly.

Maintenance

Both units are relatively maintenance-free, but the Truetrac might require less specialized gear oil compared to the Detroit Locker, which can be more particular.

Which One Should You Choose?

• If you primarily drive off-road and need maximum traction regardless of on-road manners, the Detroit Locker is a good choice.
• If you want improved traction both on and off-road with a more streetable driving experience, the Detroit Truetrac is the better option.

FAQs

Will a Detroit Locker affect my gas mileage?

Yes, slightly. Because it locks both axles together, it can cause more resistance, leading to a minor decrease in fuel efficiency, especially in stop-and-go traffic.

Is a Detroit Truetrac as strong as a Detroit Locker?

While durable, the Detroit Locker is generally considered stronger due to its solid locking mechanism. The Truetrac, relying on gears, can be susceptible to wear under extreme loads over time.

Can I install a Detroit Locker or Truetrac myself?

Installing either differential is a complex process that requires specialized tools and knowledge. It’s best left to experienced mechanics familiar with differential work.

Does a Detroit Locker require special gear oil?

Yes, some Detroit Locker units require specific gear oil additives to ensure proper function and prevent premature wear. Refer to the manufacturer’s recommendations.

Will a Truetrac completely eliminate wheel spin?

No, it is torque-biasing, not a full locker. It will significantly reduce wheel spin by transferring torque to the wheel with more grip, but in extreme situations, some wheel spin is still possible.

Summary

Ultimately, the decision between a Detroit Locker and a Detroit Truetrac hinges on your priorities. If ultimate off-road traction is your main concern, the Detroit Locker is the clear winner. However, if you value a more balanced approach with improved traction and better on-road drivability, the Detroit Truetrac is the preferable choice.