SEMA 2012: Eaton’s Truetrac Adds 5-Pinion, 35-Spline For 9-inch

If there’s one thing that separates a true enthusiast from the rest, it’s knowing where to outfit your project car or daily driver with the correct and necessary components. Sure, you’re backyard- or even pro-built car may be fast, however, how long will that rearend hold up to the constant punishment from abuse?

If you weren’t aware, Eaton’s Truetrac rearend setup has had great success and a cult-like following among serious enthusiasts. The Eaton Detroit Truetrac, which performs like an open differential under normal driving conditions and automatically transfers torque to the wheels with better traction, is now expanding it’s line of applications.

How It Works

The Detroit Truetrac was the first helical gear (no clutches) differential ever introduced into the aftermarket as an Eaton brand. In short, the patented design of the parallel axis planetary helical gears provides a quiet, automatic splitting of torque. It performs like an open differential under normal driving conditions and automatically transfers torque to the wheel with better traction. This limited-slip system responds instantly to torque feedback, anytime, at any speed.

This year, Eaton has upped the ante and will soon be releasing an all-new Detroit Truetrac, this time for 35-spline, 9-inch Ford applications with a 5-pinion design. It’s Eaton’s first 5-pinion aftermarket Detroit Truetrac and the extra pinion adds strength. Eaton’s push for a 35-spline configuration will help to satisfy aftermarket, 35-spline axles while also remaining durable. What’s more, to cut down on rotational mass, it’s been scalloped to save weight.

The helical gear-driven design allows for smooth and automatic operation. Best part, it remains maintenance free, which means less down time and more time behind the wheel.

While we don’t have a full break down of Eaton’s newest 9-inch application, we assure you we’ll have more details to follow. For now, make sure to check out the Eaton website for additional information.

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About the author

Sean Haggai

The former Associate Editor of Chevy High Performance, joins publication Chevy Hardcore, Sean is a true blue Bow Tie guy and a core do-it-yourself technician. If it doesn't run a "mouse motor" or a big rat between fenders, Sean ain't interested.
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