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Put the 4.3 diff in yesterday. Parking lot wrenching is always fun, but you gotta do what you gotta do. The swap went pretty well, only snag was getting the axles in and out. Didn't touch the suspension at all so that's probably why. I had axle click from both sides on the test drive, but after about 3 miles it went away so I'm assuming everything just had to get situated again.
Impressions:
The extra torque is felt for sure. I actually like the revs being a bit higher during cruising because I don't necessarily have to downshift as much to get around traffic and whatnot. All in all I'm happy with it. Only weird thing is on the digital gear indicator 5th no longer registers for whatever reason. Sometimes it's blank, sometimes it'll say 4th again. Not really worried about it if that's the only drawback.
Do I think this is a worthwhile swap? Yes. I sourced this 29k mile diff for $400 and was (with the help of a friend) able to install it in a parking lot with hand tools, a pry bar, and a rubber mallet. It changed the driving experience for less money than most mods cost on newer cars.
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