Re: Here's a maybe-interesting oldtimer
Reply #6 –
That coach would have been equipped with a MT643 Allison 4spd. If in fact it has been upgraded it would be a MD3060 most likely. This is an electronic transmission so the mechanical engine would have had to been equipped with a throttle position sensor of some type. I looked into doing this conversion to mine but found it was too much $$. I would think its probably a typo. Most people find the 4:88 gearing and 4spd a bit too slow. Max speed on this coach at 3000 governed engine rpm is 65 mph. The engine can be turned to 3400 with a governor adjustment which will raise the speed to approx 75mph. These are fantastic coaches and will last many, many years if properly cared for. The engine is of no issue as many people claim. These are fine powerplants if cared for.
Topic: Here's a maybe-interesting oldtimer