85lebaront2 Posted April 14, 2023 Share Posted April 14, 2023 I think you are completely right, it would be a WHOLE lot easier to buy an entire axle with a limited slip instead of swapping out the gears. I AM curious about the 87 rear that you were tracking. Do you have any more info on it? I did essentially what you are talking about on Darth, but I had a damaged bearing tube on the left side that I had to replace the seal every year before inspection due to the damaged area. I also wanted a limited slip 3.55 to replace my open 3.55 gear. I had purchased a 1990 F250 parts truck, 460, E4OD and 3.55 traction loc, unfortunately, since Darth is a DRW truck, the axles are different. I bought a DRW axle with an open 4.10 gear and found it had some water damage to the gears which wasn't a problem. I transferred the innards of the SRW 1990 axle into the DRW housing and in doing so discovered Ford had increased the width of the rear brakes from 2.5" on the 1986 F350 to 3" on the 1990 F250 and to 3.5" on the 1993 F350 DRW axle. I kept the 1993 3.5" wide brakes for Darth. Link to comment Share on other sites More sharing options...
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