I checked last night, that is correct Zim, the aftermarket book makes no mention of the diameter, it just says to check the race for galling or indentations (evidence of a rolled sprag). It is a darn good book though, WAY better at explaining how everything works and why it does what it does. Also many tricks on how to get by without special tools as well, like checking servo pin lengths, pump gear wear, etc.
It does not say to measure it the direct drum however. I learned the hard way after I broke mine and started researching why. Where I found the information was a combination of online, and calling a professional. Which seems to be the case with a lot of auto trans stuff, modifications especially. I think most trans professionals realize there isn't any money in selling kits and spending hours on the phone teaching people how to do things, so it isn't cost effective, and I don't blame them. So they just don't give out much information and only sell transmissions.
As for your Corvette, at this point, I would just run it, it's in, it's working, and with the small block and lightweight car it might last forever. If 2nd gear goes out, you can still get home with 1st and 3rd. And so once it's in and working, removing it to fix it before it breaks isn't much more work than removing it later. Just don't drive it in manual 2nd if it breaks, it will burn up the int band, and also, go easy on throttle on the 1-3 shift on your way home, 3rd gear doesn't like taking the load of that big jump in gear change. It won't break, it just wears faster.
The rig is coming together nicely, only 1.5 weeks until I get to check it out and mess something up!
