Here is an idea that we used at our shop to build a stand to overhaul truck diffs. this could be uses if you built your own stand, or to retrofit a stand that you already have, to supply rotation without the long handle. Obtain a brake slack adjuster (manual, not an automatic slack), for a large truck with air brakes, along with this, get a s cam with the same amount of splines as the adjuster (prolly either 10 or 28 spline) cut off the s on the cam ,leaving you with a shaft with a spline on it. if your lucky, the shaft will fit thru the same hole that the original rotating shaft on the stand has. If not, you may have to fabricate bushings or spacers. Weld plate that bolts to the engine to the splined shaft where you cut off the s from the cam, leaving the splined end to the outside. Install slack adjuster to the splined end of cam. using a bolt, insert it thru the lowest hole in the slack adjuster and weld it to the stem of the stand. Then you can use a 9/16 socket on the slack adjuster to rotate the engine. It even has a pop up lock that stops rotation when you remove the socket. the parts are not expensive new, and if you knew someone at a truck shop you prolly could get used parts for nuthin'
tc
