55 Fargo Posted October 31, 2007 Report Posted October 31, 2007 Hi all, did the swap today on my 47 Chrysler, someone had put a 4.30 rearend in years ago for some reason, unknown to me. I installed an exact match differential carrier with 3.73 gears, as the splines and everything were identical, it was a nice swap. The only diference was this, the 4.30 when you turned it by hand, was stiffer than the 3.73, and the 3.73 had a little more play. I did not swap the pinion seal, as I did not want to mess with it, if it needs changing, will do it later. As it is a very dark and rainy night, I did not go for a test ride, but did back down my 200 foot driveway, no noises going in either direction, so far so good. Thanx everyone who endures my many posts on this subject, and thanx for the endless advice. Special thanks to Tim Adams, who called me today and offered some more advice to me, this truly is a great forum, with some fine gentleman on it.......................Fred Quote
55 Fargo Posted October 31, 2007 Author Report Posted October 31, 2007 You Betcha Buddy, but want to see if it's okay at low speeds first...........Fred Quote
55 Fargo Posted October 31, 2007 Author Report Posted October 31, 2007 Just went for a test drive, no unusual noises, thankful for that fact.The speedo is a lot more accurate, had the car up to 50 mph on my gravel road. 50 mph felt like 40 mph with the old 4.30 diff. So far so good, touch wood................Fred Quote
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