Not Ranked
rear diff
Here's the numbers that I came up with from a standard 3.15 diff to 3.46=600 plus rpm,
3.64=750 plus rpm, 3.73=840 plus rpm, and 391=1050 plus rpm. These are only for going from 3.15 diff changes. I hope this helps. Jay and Brian can help you locate and install a upgraded diff if needed.
Doug I
Not sure if I can chirp from 2nd to 3rd yet but I think that only depends on the driver. I have to wait for the break-in to further play.
tom
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 No I wouldn't race you, my lug nuts require more tourqe than that thing puts out........
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