That's very interesting. I would think that the RPM range would vary depending upon the power output of the engine and may also be different depending on it you are running a modified VP converter or not. I don't know the inner workings of the converter well enough to confirm that, or what the Buick book says, but it makes sense to me. Lol.
I was wrong again.have Ken Bell test with a 455ci 3-speed and 3.42 gears, they always did good testing. ran 112.6 mph and 12.43. then turning converter off at 3500 rpms it ran 113.2 mph and 12.33. so .6 mph and 1 tenth faster.
I know Carmen is highly respected but I doubt that's the case. The reason it feels like the RPMs do not drop is because your already past the stall speed of the converter. If you've selected high stall with a toggle switch, your in high stall regardless of throttle position or engine RPM.
think I follow what your saying, yes the converter will be in high stall but it should not be slipping any more then in low stall mode, so say after 4000 rpms there is no benefit of putting it in low stall ?
