I have recently been asked the question below and wanted the person who asked it to have the most informed answer possible.
As I am not the expert on these things and my understanding of how this would work is probably basic at best, I wanted to throw his question out to the membership as a whole, so that someone with more knowledge than I could answer it for them, explaining what the best use for a 4.875 diff is and what the effect would be on the 1098 (or 948 - he didn't specify) engined car:
As always thanks for you assistance with this.If I wanted to lower the cruising speed of my Minor 1000 would one of your differentials do the job?
I don't want huge halfshaft snapping acceleration just a little less revving at cruising speed.
Would the 4.8 differential offer me anything?