The rear diff ratio:
I could not find a definite answer to what the ratio was,
so this is now a definite answer as I stripped both diffs and did the calculations.
VR4 1998 rear diff crown wheel teeth = 53
VR4 1998 rear diff pinion teeth = 16.
Divide the crown wheel number by the pinion number to give the ratio.
53 / 16 = 3.3125 (3.313)
The EVO 8 rear diff crown wheel teeth = 43
The EVO 8 rear diff pinion teeth = 13.
Divide the crown wheel number by the pinion number to give the ratio.
43 / 13 = 3.3077 (3.308)
The difference in the ratios is 0.00480
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