Dan, I told Bill that you'd be able to find the info.
He and I were conversing by e-mail.
I fumbled around on the GMpartswiki yesterday for about 30 minutes and came up totally empty. I tried a bunch of search options, (flywheel, ring gear, 3835306, and "gear flywheel ring", bit not "gear, flywheel ring") but didn't find it. I did find where that 3935306 part number was removed in July of 1972, but that wasn't much help.
Maybe you can give us lessons on searching.
