Well, had a long conversion with a very helpful Nick at Nimco transmission, and we've come to the conclusion that we actually have a VS2-8 transmission after all.
The case is definitely a VH case, as evidenced by the tag on the side, but based on several factors, it's pretty certain that someone simply used the VH housing on a VS2-8. He said that often they use 730 housings on rebuilt 731's, so it wouldn't surprise him at all to see a VS2-8 inside a VH housing.
Here are the reasons we believe this to be so:
we have a 2 5/8" spacer between the transmission and engine. Nick explained to me that the VH has the planetary's there, but that the VS2-8 requires a spacer of, guess what, 2 5/8".
We have driven about 5000 miles since we purchased the bus, and pretty much all of those have been highway miles. The bus has gone from Ft. Pierce, FL down to the keys in one long drive, then back from the keys to Daytona, FL in another long haul of all day interstate driving, then on up to Nashivlle before heading back to Oklahoma. From Oklahoma it's gone to Texas a couple of times and most recently to Joplin, MO and back. The last trip was in 100 degree weather
and we drove it 60-65 mph from Tulsa to OKC without a break. Nick said that there is just no way that a VH would have lasted to the Keys on the first drive, much less any of the following miles.
We've been on quite a few hills, albeit no mountains or extreme grades, but several hills, and we didn't notice much drop in speed at all. When we purchased the bus, Larry ran it on up to 70 mph to see what it would do
, and he did not top end it, but it had no problem getting there quickly. Normally, he runs between 55-65 mph on the highway, and at those speeds for hours on end, he's noticed no problems whatsoever with the transmission. Nick said that it's pretty obvious that it has to be a VS2-8 inside there, as a VH would struggle above 45 mph.
So, we think we're ok, and we appreciate Nick's help and the fact that he ended the conversation with the sentiment that he was not about to try to sell us something we didn't need and he'd be there for us if we ever needed him, but that it was obvious we were fine.
So, anyone have any comments? Agree? Disagree? Please feel free to tell me what you think so we can lay this to rest permanently!