I read the other thread. You had a 85 Rev Per MILE difference with those tires. ( I calculate the difference by multiplying the tire mis-match by the axle ratio of 3.42 to determine the mis-match
at the T-Case). This is severe. You've very likely locked-up the V-clutch.
Here's what I'd try/do next:
- Remove the front prop shaft.
- Perform the "DaveP V-Clutch test".
- If you find that the V-clutch is indeed locked, leave the prop shaft out, and drive it in RWD until you get around to fixing the T-case.
- You will probably notice that the "whine" goes away with the prop shaft removed.
- The whine is coming from the front differential because the T-case is locked.
- Keep driving it like it is, and you'll need a front diff as well as T-case repairs. The front diff will self-destruct before the T-case itself suffers any further damage. Or maybe the front propshaft will blow instead. But something will bust if you keep driving it with a locked V-Clutch.
This is an ongoing debate on here. How much tire mismatch is "OK". Everyone guesses. But for the 2-3 guys here that KNOW how these T-Cases work, based on their experience, the only acceptable answer is "just about perfect" if you want to have long V-clutch and drive train component lives.
Tough lesson, for sure.
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