Good replacement for an Allison MT-41
This transmission went out of production back around 1972, but I do have one in a 1974 class A motor home. It was put in years after the coach was built, so it may not be set up correctly for the loads now carried.
The problem that I have is that the transmission is a 6 speed, but unless manually selected it always starts off in 3rd gear, (normal for this model). Where the problem comes in is when the transmission shifts from 5th to 6th. It does so at about 2,300 RPM. In sixth gear the RPMs drop to about 1,700 RPM.
My engine, (DD6V53), develops it's max HP at 2,800 RPM. At 1,700 RPM it has very little power. On flat land this is not a problem, but going uphill the engine bogs down and smokes a lot. The question is, can the shift point be increased to say 2,700 rpm, so that in the next gear the engine will have higher RPM's and power?
Failing an adjustment, what would be a good economical replacement, (used take out)? The coach is old, and I do not want to drop a ton of money into it.
Any advice or input?