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Dino Gets Disc Brakes & Limited Slip Differentials

Cannot Get No Dinotraction

Verne SimonsPhotographer, Writer

Nine times out of 10 if you hear us talking about traction-adding devices here, we are talking about lockers or maybe a spool. We generally give limited-slip diffs the cold shoulder, but that’s not to say that they cannot give us the satisfaction we desire in certain applications. Limited-slip differentials afford more traction on- and off-road than open diffs, and that’s always good. And they do it without many of the drawbacks of a locker or spool. For a mildly built rig that spends lots of time on the road and little on the rocks, like Dino the 1970 Chevy Suburban, adding limited-slip differentials will give us all the off-road traction we would ever need as simply as simple can get.

While Dino has most likely seen more off-road miles than most other 4x4s ever will, it has gone its entire life with a pair of open diffs. The time was right for more traction to help keep the lumbering, nearly fossilized beast out of sticky tar pits and the like, but we didn’t want the drawbacks that can sometimes come with lockers, like twitches and bangs on corners. We also didn’t want lockers, because if we got into a position where they were really necessary we would be driving Dino somewhere it really should not be.

Not surprisingly, limited slips come in a few different flavors—some new, some old, and some more desirable than others. We ended up selecting the Dura Grip Positraction Differential from Yukon Gear & Axle for four reasons. First, the Yukon diff is rebuildable. Second, the aggressive four-spring clutch uses Raybestos composite materials to supply traction to both of the axles wheels. Third, the Dura Grip is competitively priced. Fourth, adding these diffs gave us a great reason to upgrade to an open-knuckle, disc-brake, Dana 44 front axle and Yukon chromoly axleshafts all the way round. That means stronger parts for Dino, more traction, and improved stopping power for our old beast. Follow along with the install, and we’ll give you tips and tricks along the way.