The Stovebolt Site Forums The Shop Area General Truck Talk interesting truck

I figured that 3B (Bobb) would know.

At the bottom of this page is more H-M information than most sane people would ever be interested in.

I think that I have an original 24”x36” schematic diagram for the 21 forward speed Hydra-Matic.

Here is a discussion with a little more information (some confused, but, some is correct).
(some more information)