Chevrolet Chevelle Rear Suspension Tips & Parts - Power to the Pavement
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This illustration (looking forward from behind the car) reveals why a posi is merely a crutch to fix a spinning right-rear tire. When the car launches, the pinion gear in the rearend tries to climb the ring gear, unloading downward pressure from the right rear tire. This occurs in any solid-rear-axle vehicle and explains why non-posi-equipped cars spin the right-rear tire. View Related Article
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