How to identify a non lockup A999 transmission with pics!

pishta said
if you are really looking for a quick 904-998/999 callout at the junkyard, I believe the ribbing over the bulge in the exterior of the case is an indicator too. my 904/6 has no ribs over the passenger side servo at the tailshaft seam while my non lock up 998/999 has 2 distinct ribs bracketing the servo bump.

You could be right about that but I never noticed it. I looked at my original case and I guess it has the ribs. AFAIK, except for the starter position on Slant 6 cases, most/all v8- 904 cases are essentially the same. Obviously there are slight differences in some units but I wouldn't know exactly what those are.

Again, trying to ID an A999 externally by the case is not definitive, you really need to tear it apart to be sure. Besides, even if you found one of the 3 A999 PK #s I posted earlier, you'd still have to open it up to check the parts like I did.

Perhaps these last two replies in fact can help ID one of these units to some extent but my aim with this post was to show what things look like inside to know for sure. Anything beyond hard parts in your hand is a guess.