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Truetrac Limited Slip (7.5") IFS Front (4cyl)
Truetrac Limited Slip (7.5") IFS Front (4cyl)

Our Price: $599.95

Part Number: 1091032


Truetrac Limited Slip (7.5") IFS Front (4cyl)

Detroit Truetracs are similar in design to the Gleason Torsen, only the Truetracs hold up well with reasonably tall tires. They use worm wheel gears that work on the same principle as a worm gear. When the unit is loaded, the worm wheels are forced away from each other and against the case. They develop locking torque by the light friction between the worm wheels and the case. This light friction is multiplied by the ratio of the worm wheel which depends on the size of the worm wheel relative to the size of the side gear. The manufacturer can change the amount of torque biasing or lockup by simply changing the diameter of the gears, or the pitch and spiral of the teeth. A larger difference in the size for the worm wheels and side gears (smaller worm wheels and larger side gears) will increase the lockup force. Increasing the pitch and spiral of the teeth will also increase the lockup forces.

Like everything, there is a limit as to how much lock-up force is reasonable. Making the unit too "aggressive" will cause tire scrub during everyday driving and will cause the unit to wear out too quickly. This unit works very well for mud and snow, while going unnoticed during every day driving. When used in situations like rocky trails where one wheel gets off the ground, the unit will not lock up 100%. Light application of the brakes will help the differential engage more transferring power to the tire that is still on the ground. For extreme situations where the vehicle will have one wheel in the air often a locking differential provides better power transfer to the wheel on the ground.

Detroit Truetracs are designed for medium duty 2WD and 4WD applications. They work well in the front and rear, and are so smooth that there is little or no hint of resistance in the steering wheel when used in front drive steering axles. Like the Gleason Torsen, the Detroit Truetrac does not bang or clunk, has no clutch chatter, does not wear out like clutch type positractions, does not need limited slip additive, and needs no preload or clearance adjustments.

Almost sounds too good to be true, doesn't it? The only drawbacks to the Truetracs are their inability to provide 100% lock-up like a locking differential can. Even though Gleason no longer makes the Torsen differentials, the Detroit Truetrac is a proven design that is available for many popular applications.

Contact our Tech Support Line for further information at 928-855-6341.

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Note: Images are for illustration purposes only. Images MAY NOT represent the product listed. Please contact Customer Service with any questions or concerns: 928-505-2501.

Average Customer Review: 5 of 5 Total Reviews: 1 Write a review.

  1 of 1 people found the following review helpful:
Smooth! Really Smooth! April 23, 2015
Reviewer: Trevor from Sheffield, ON Canada  
Threw one of these in my front dif.  Put the truck in 4 and drove around some paved corners.  The power distribution eliminated that chunk and grab it use to do with an open dif.  This was just a test for winter driving as my back country road commute to work varies conditions drastically.
Found a tractor path where ATVs have been getting stuck.  Truetrac in the front and Lock-Rite in the rear ploughed right through everything without hardly an effort.  Even rescued some stranded kids on their ATVs.

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