The Vanagon auto tranny has not changed much between 1973 and 1991.
They are basic three speed units, no locking torque converter.
The torque conveters are air cooled, water cooled Vanagons have water
cooling added to the tranny.
The overall gearing is that high gear and the ring-pinion give the same as
the typical vanagon 4 speed. 3,800 rpm ~ 68 mph on 185/80-14 tires.

The torque converters have different stall speeds over the years.

Taken care of they are very rugged units.

Dennis

>From: Kai Mei <kai@NEWCLEAR.US>
>Reply-To: Kai Mei <kai@NEWCLEAR.US>
>To: vanagon@GERRY.VANAGON.COM
>Subject: The automatic tranny on vanagons
>Date: Mon, 23 Jul 2007 00:15:05 -0400
>
>is there a FAQ for them? Good on the freeway, meaning lockup, not
>geared too low....
>
>Did they vary during the model life?