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In this month’s Project Car update, we are swapping out the stock 3.27:1 gears for a more beefy set of 3.73s. To get started, Moore removed the driveshaft and rear brake calipers, popped open the rear cover, and removed the differential cross-shaft. Ford’s 8.8-inch uses C-clips to retain the axles (incidentally, they’re referred to as “U-washers” in the factory service manual), and access to the clips is somewhat limited by the S-shaped spring in the Traction Lok diff. Moore used a couple of small screwdrivers and picks to remove them. He slid the axles out just far enough to clear the differential carrier. Next, he removed the carrier caps, pried out the carrier, and removed the pinion gear.