There was no fluid in the Trans. Also what do you mean by carrying case?
It's not an AIR block off from the catalytic converter is it?
lol, carrying case means what kind of car is the LT1 sitting in?
even if you had just drained and dropped the pan, if this had fallen out, you'd still have traces of trans fluid on it. that green looks like assembly lube, or grease....
** just stumbled back across your build thread, didn't realize it was in the cutlass...
are your A.I.R. tubes still in place? if so check around the ends, only other place I can think of that has a cap that small may be on the throttle body... IIRC there is one that covers up the blade adjustment screw....
have you worked on anything else in that immediate area recently? I'm always coming across stuff in the driveway from previous repairs..
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